暖通空调专业外文翻译--空调系统

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(完整版)暖通空调英语专业词汇大全

(完整版)暖通空调英语专业词汇大全

附录英汉对照索引AA-weighted sound pressure level A声级(96)absolute humidity 绝对湿度(2)absolute roughness 绝对粗糙度(25)absorbate 吸收质(49)absorbent 吸收剂(49)absorbent 吸声材料(100)absorber 吸收器(85)absorptance for solar radiation 太阳辐射热吸收系数(60)absorption equipment 吸收装置(49)absorption of gas and vapo[u]r 气体吸收(48)absorptiong refrige rationg cycle 吸收式制冷循环(80)absorption-type refrigerating machine吸收式制冷机(84)access door 检查门(55)acoustic absorptivity 吸声系数(100)actual density 真密度(44)actuating element 执行机构(94)actuator 执行机构(94)adaptive control system 自适应控制系统(93)additional factor for exterior door 外门附加率(19)additional factor for intermittent heating 间歇附加率(19)additional factor for wind force 高度附加率(19)additional heat loss 风力附加率(19)adiabatic humidification 附加耗热量(18)adiabatic humidiflcation 绝热加湿(66)adsorbate 吸附质(49)adsorbent 吸附剂(49)adsorber 吸附装置(49)adsorption equipment 吸附装置(49)adsorption of gas and vapo[u]r 气体吸附(48)aerodynamic noise 空气动力噪声(98)aerosol 气溶胶(43)air balance 风量平衡(35)air changes 换气次数(35)air channel 风道(51)air cleanliness 空气洁净度(104)air collector 集气罐(31)air conditioning 空气调节(59)air conditioning condition 空调工况(76)air conditioning equipment 空气调节设备(70)air conditioning machine room 空气调节机房(59)air conditioning system 空气调节系统(62)air conditioning system cooling load 空气调节系统冷负荷(62)air contaminant 空气污染物(51)air-cooled condenser 风冷式冷凝器(82)air cooler 空气冷却器(74)air curtain 空气幕(30)air cushion shock absorber 空气弹簧隔振器(101)air distribution 气流组织(68)air distributor 空气分布器(54)air-douche unit with water atomization喷雾风扇(56)air duct 风管、风道(51)air filter 空气过滤器(58)air handling equipment 空气调节设备(70)air handling unit room 空气调节机房(59)air header 集合管(52)air humidity 空气湿度(2)air inlet 风口(54)air intake 进风口(41)air manifold 集合管(52)air opening 风口(54)air pollutant 空气污染物(51)air pollution 大气污染(50)air preheater 空气预热器(73)air return method 回风方式(70)air return mode 回风方式(70)air return through corridor 走廊回风(70)air space 空气间层(15)air supply method 送风方式(69)air supply mode 送风方式(69)air supply (suction) opening with slide plate 插板式送(吸)风口(54)air supply volume per unit area 单位面积送风量(69)air temperature 空气温度(2)air through tunnel 地道风(40)air-to-air total heat exchanger 全热换热器(73)air-to-cloth ratio 气布比(48)air velocity at work area 作业地带空气流速(5)air velocity at work place 工作地点空气流速(4)air vent 放气阀(31)air-water systen 空气—水系统(64)airborne particles 大气尘(43)air hater 空气加热器(29)airspace 空气间层(15)alarm signal 报警信号(90)ail-air system 全空气系统(63)all-water system 全水系统(64)allowed indoor fluctuation of temperature and relative humidity 室内温湿度允许波动范围(5)ambient noise 环境噪声(97)ammonia 氨(78)amplification factor of centrolled plant 调节对象放大系数(87)amplitude 振幅(100)anergy (77)angle of repose 安息角(44)ange of slide 滑动角(44)angle scale 热湿比(67)angle valve 角阀(31)annual [value] 历年值(3)annual coldest month 历年最冷月(3)annual hottest month 历年最热月(3)anticorrosive 缓蚀剂(78)antifreeze agent 防冻剂(78)antifreeze agent 防冻剂(78)apparatus dew point 机器露点(67)apparent density 堆积密度(45)aqua-ammoniaabsorptiontype-refrigerating machine 氨—水吸收式制冷机(84)aspiation psychrometer 通风温湿度计(102)Assmann aspiration psychrometer 通风温湿度计(102)atmospheric condenser 淋激式冷凝器(83)atmospheric diffusion 大气扩散(40)atmospheric dust 大气尘(43)atmospheric pollution 大气污染(50)atmospheric pressure 大气压力(6atmospheric stability 大气稳定度(50)atmospheric transparency 大气透明度(10)atmospheric turblence 大气湍流(50)automatic control 自动控制(86)automatic roll filter 自动卷绕式过滤器(58)automatic vent 自动放气阀(32)available pressure 资用压力(27)average daily sol-air temperature 日平均综合温度(60)axial fan 轴流式通风机(55)azeotropic mixture refrigerant 共沸溶液制冷剂(77)Bback-flow preventer 防回流装置(53)back pressure of steam trap 凝结水背压力(14)back pressure return 余压回水(15)background noise 背景噪声(98)back plate 挡风板(39)bag filler 袋式除尘器(57)baghouse 袋式除尘器(57)barometric pressure 大气压力(6)basic heat loss 基本耗热量(18)bend muffler 消声弯头(100)bimetallic thermometer 双金属温度计(102)black globe temperature 黑球温度(2)blow off pipe 排污管(23)blowdown 排污管(23)boiler 锅炉(27)boiller house 锅炉房(14)boiler plant 锅炉房(14)boiler room 锅炉房(14)booster 加压泵(29)branch 支管(22)branch duct (通风) 支管(51)branch pipe 支管(22)building envelope 围护结构(15)building flow zones 建筑气流区(37)building heating entry 热力入口(15)bulk density 堆积密度(45)bushing 补心(24)butterfly damper 蝶阀(52)by-pass damper 空气加热器〕旁通阀(41)by-pass pipe 旁通管(23)Ccanopy hood 伞形罩(42)capillary tube 毛细管(84)capture velocity 控制风速(43)capture velocity 外部吸气罩(41)capturing hood 卡诺循环(79)Carnot cycle 串级调节系统(92)cascade control system 铸铁散热器(29)cast iron radiator 催化燃烧(49)catalytic oxidation 催化燃烧(49)ceilling fan 吊扇(56)ceiling panelheating 顶棚辐射采暖(12)center frequency 中心频率(97)central air conditionint system 集中式空气调节系统(63)central heating 集中采暖(11)central ventilation system 新风系统(64)centralized control 集中控制(91)centrifugal compressor 离心式压缩机(82)centrifugal fan 离心式通风机(55)check damper (通风〕止回阀(53)check valve 止回阀(31)chilled water 冷水(76)chilled water system withprimary-secondary pumps 一、二次泵冷水系统(81)chimney (排气〕烟囱(50)circuit 环路(24)circulating fan 风扇(55)circulating pipe 循环管(23)circulating pump 循环泵(29)clean room 洁净室(104)cleaning hole 清扫孔(54)cleaning vacuum plant 真空吸尘装置(58)cleanout opening 清扫孔(54)clogging capacity 容尘量(47)close nipple 长丝(24)closed booth 大容积密闭罩(42)closed full flow return 闭式满管回水(15)closed loop control 闭环控制(87)closed return 闭式回水(15)closed shell and tube condenser 卧式壳管式冷凝器(82)closed shell and tube evaporator 卧式壳管式蒸发器(83)closed tank 闭式水箱(28)coefficient of accumulation of heat 蓄热系数(17)coefficient of atmospheric transpareney 大气透明度(10)coefficient of effective heat emission散热量有效系数(38)coficient of effective heat emission 传热系数(16)coefficient of locall resistance 局部阻力系数(26)coefficient of thermal storage 蓄热系数(17)coefficient of vapo[u]r 蒸汽渗透系数(18)coefficient of vapo[u]r 蒸汽渗透系数(18)coil 盘管(74)collection efficiency 除尘效率(47)combustion of gas and vapo[u]r 气体燃烧(58)comfort air conditioning 舒适性空气调节(59)common section 共同段(25)compensator 补偿器(31)components (通风〕部件(52)compression 压缩(79)compression-type refrigerating machine压缩式制冷机(81)compression-type refrigerating system压缩式制冷系统(81)compression-type refrigeration 压缩式制冷(80)compression-type refrigeration cycle 压缩式制冷循环(79)compression-type water chiller 压缩式冷水机组(81)concentratcd heating 集中采暖(11)concentration of harmful substance 有害物质浓度(36)condensate drain pan 凝结水盘(74)condensate pipe 凝结水管(22)condensate pump 凝缩水泵(29)condensate tank 凝结水箱(28)condensation 冷凝(79)condensation of vapo[u]r 气体冷凝(49)condenser 冷凝器(82)condensing pressure 冷凝压力(75)condensing temperature 冷凝温度(75)condensing unit 压缩冷凝机组(81)conditioned space 空气调节房间(59)conditioned zone 空气调节区(59)conical cowl 锥形风帽(52)constant humidity system 恒湿系统(64)constant temperature and humidity system 恒温恒湿系统(64)constant temperature system 恒温系统(64)constant value control 定值调节(91)constant volume air conditioning system 定风量空气调节系统(63)continuous dust dislodging 连续除灰(48)continuous dust dislodging 连续除灰(48)continuous heating 连续采暖(11)contour zone 稳定气流区(38)control device 控制装置(86)control panel 控制屏(95)control valve 调节阀(95)control velocity 控制风速(43)controlled natural ventilation 有组织自然通风(37)controlled plant 调节对象(86)controlled variable 被控参数(86)controller 调节器(94)convection heating 对流采暖(12)convector 对流散热器(29)cooling 降温、冷却(39、66)cooling air curtain 冷风幕(74)cooling coil 冷盘管(74)cooling coil section 冷却段(72)cooling load from heat 传热冷负荷(62)cooling load from outdoor air 新风冷负荷(62)cooling load from ventilation 新风冷负荷(62)cooling load temperature 冷负荷温度(62)cooling system 降温系统(40)cooling tower 冷却塔(83)cooling unit 冷风机组(56)cooling water 冷却水(76)correcting element 调节机构(95)correcting unit 执行器(94)correction factor for orientaion 朝向修正率(19)corrosion inhibitor 缓蚀剂(78)coupling 管接头(23)cowl 伞形风帽(52)criteria for noise control cross 噪声控频标准(98)cross fan 四通(24)crross-flow fan 贯流式通风机(55)cross-ventilation 穿堂风(37)cut diameter 分割粒径(47)cyclone 旋风除尘器(56)cyclone dust separator 旋风除尘器(56)cylindrical ventilator 筒形风帽(52)Ddaily range 日较差(6)damping factot 衰减倍数(17)data scaning 巡回检测(90)days of heating period 采暖期天数(9)deafener 消声器(99)decibel(dB) 分贝(96)degree-days of heating period 采暖期度日数(9)degree of subcooling 过冷度(79)degree of superheat 过热度(80)dehumidification 减湿(66)dehumidifying cooling 减湿冷却(66)density of dust particle 真密度(44)derivative time 微分时间(89)design conditions 计算参数(2)desorption 解吸(49)detecting element 检测元件(93)detention period 延迟时间(18)deviation 偏差(87)dew-point temperature 露点温度(2)dimond-shaped damper 菱形叶片调节阀(53)differential pressure type flowmeter 差压流量计(103)diffuser air supply 散流器(54)diffuser air supply 散流器送风(69)direct air conditioning system 直流式空气调节系统(64)direct combustion 直接燃烧(48)direct-contact heat exchanger 汽水混合式换热器(28)direct digital control (DDC) system 直接数字控制系统(92)direct evaporator 直接式蒸发器(83)direct-fired lithiumbromideabsorption-type refrigerating machine 直燃式溴化锂吸收式制冷机(85)direct refrigerating system 直接制冷系统(80)direct return system 异程式系统(20)direct solar radiation 太阳直接辐射(10)discharge pressure 排气压力(76)discharge temperature 排气温度(76)dispersion 大气扩散(49)district heat supply 区域供热(15)district heating 区域供热(15)disturbance frequency 扰动频率(100)dominant wind direction 最多风向(7)double-effect lithium-bromideabsorption-type refigerating machine 双效溴化锂吸收式制冷机(85)double pipe condenser 套管式冷凝器(82)down draft 倒灌(39)downfeed system 上分式系统(21)downstream spray pattern 顺喷(67)drain pipe 泄水管(23)drain pipe 排污管(23)droplet 液滴(44)drv air 干空气(65)dry-and-wet-bulb thermometer 干湿球温度表(102)dry-bulb temperature 干球温度(2)dry cooling condition 干工况(67)dry dust separator 干式除尘器(56)dry expansion evaporator 干式蒸发器(83)dry return pipe 干式凝结水管(22)dry steam humidifler 干蒸汽加湿器(72)dualductairconing ition 双风管空气调节系统(63)dual duct system 双风管空气调节系统(63)duct 风管、风道(51)dust 粉尘(43)dust capacity 容尘量(47)dust collector 除尘器(56)dust concentration 含尘浓度(46)dust control 除尘(46)dust-holding capacity 容尘量(47)dust removal 除尘(46)dust removing system 除尘系统(46)dust sampler 粉尘采样仪(104)dust sampling meter 粉尘采样仪(104)dust separation 除尘(45)dust separator 除尘器(56)dust source 尘源(45)dynamic deviation 动态偏差(88)Eeconomic resistance of heat transfer 经济传热阻(17)economic velocity 经济流速(26)efective coefficient of local resistance 折算局部阻力系数(26)effective legth 折算长度(25)effective stack height 烟囱有效高度(50)effective temperature difference 送风温差(70)ejector 喷射器(85)ejetor 弯头(24)elbow 电加热器(73)electric heater 电加热段(71)electric panel heating 电热辐射采暖(13)electric precipitator 电除尘器(57)electricradian theating 电热辐射采暖(13)electricresistance hu-midkfier 电阻式加湿器(72)electro-pneumatic convertor 电—气转换器(94)electrode humidifler 电极式加湿器(73)electrostatic precipi-tator 电除尘器(57)eliminator 挡水板(74)emergency ventilation 事故通风(34)emergency ventilation system 事故通风系统(40)emission concentration 排放浓度(51)enclosed hood 密闭罩(42)enthalpy 焓(76)enthalpy control system 新风〕焓值控制系统(91)enthalpy entropy chart 焓熵图(77)entirely ventilation 全面通风(33)entropy 熵(76)environmental noise 环境噪声(97)equal percentage flow characteristic 等百分比流量特性(89)equivalent coefficient of local resistance 当量局部阻力系数(26)equivalent length 当量长度(25)equivalent[continuous A] sound level 等效〔连续A〕声级(96)evaporating pressure 蒸发压力(75)evaporating temperature 蒸发温度(75)evaporative condenser 蒸发式冷凝器(83)evaporator 蒸发器(83)excess heat 余热(35)excess pressure 余压(37)excessive heat 余热(35)exergy (76)exhaust air rate 排风量(35)exhaust fan 排风机(41)exhaust fan room 排风机室(41)exhaust hood 局部排风罩(41)exhaust inlet 吸风口(54)exhaust opening 吸风口(54)exhaust opening orinlet 风口(54)exhaust outlet 排风口(54)exaust vertical pipe 排气〕烟囱(50)exhausted enclosure 密闭罩(42)exit 排风口(54)expansion 膨胀(79)expansion pipe 膨胀管(23)explosion proofing 防爆(36)expansion steam trap 恒温式疏水器(32)expansion tank 膨胀水箱(28)extreme maximum temperature 极端最高温度(6)extreme minimum temperature 极端最低温度(6)Ffabric collector 袋式除尘器(57)face tube 皮托管(103)face velocity 罩口风速(42)fan 通风机(55)fan-coil air-conditioning system 风机盘管空气调节系统(64)fan-coil system 风机盘管空气调节系统(64)fan-coil unit 风机盘管机组(72)fan house 通风机室(41)fan room 通风机室(41)fan section 风机段(72)feed-forward control 前馈控制(91)feedback 反馈(86)feeding branch tlo radiator 散热器供热支管(23)fibrous dust 纤维性粉尘(43)fillter cylinder for sampling 滤筒采样管(104)fillter efficiency 过滤效率(47)fillter section 过滤段(71)filltration velocity 过滤速度(48)final resistance of filter 过滤器终阻力(47)fire damper 防火阀(53)fire prevention 防火(36)fire protection 防火(36)fire-resisting damper 防火阀(53)fittings (通风〕配件(52)fixed set-point control 定值调节(91)fixed support 固定支架(24)fixed time temperature (humidity) 定时温(湿)度(5)flame combustion 热力燃烧(48)flash gas 闪发气体(78)flash steam 二次蒸汽(14)flexible duct 软管(52)flexible joint 柔性接头(52)float type steam trap 浮球式疏水器(32)float valve 浮球阀(31)floating control 无定位调节(88)flooded evaporator 满液式蒸发器(83)floor panel heating 地板辐射采暖(13)flow capacity of control valve 调节阀流通能力(90)flow characteristic of control valve 调节阀流量特性(89)foam dust separator 泡沫除尘器(57)follow-up control system 随动系统(92)forced ventilation 机械通风(33)forward flow zone 射流区(69)foul gas 不凝性气体(78)four-pipe water system 四管制水系统(65)fractional separation efficiency 分级除尘效率(47)free jet 自由射流(68)free sillica 游离二氧化硅(43)free silicon dioxide 游离二氧化硅(43)freon 氟利昂(77)frequency interval 频程(97)frequency of wind direction 风向频率(7)fresh air handling unit 新风机组(71)fresh air requirement 新风量(67)friction factor 摩擦系数(25)friction loss 摩擦阻力(25)frictional resistance 摩擦阻力(25)fume 烟〔雾〕(44)fumehood 排风柜(42)fumes 烟气(44)Ggas-fired infrared heating 煤气红外线辐射采暖(13)gas-fired unit heater 燃气热风器(30)gas purger 不凝性气体分离器(84)gate valve 闸阀(31)general air change 全面通风(33)general exhaust ventilation (GEV) 全面排风(33)general ventilation 全面通风(33)generator 发生器(85)global radiation 总辐射(10)grade efficiency 分级除尘效率(47)granular bed filter 颗粒层除尘器(57)granulometric distribution 粒径分布(44)gravel bed filter 颗粒层除尘器(57)gravity separator 沉降室(56)ground-level concentration 落地浓度(51)guide vane 导流板(52)Hhair hygrometor 毛发湿度计(102)hand pump 手摇泵(29)harmful gas and vapo[u]r 有害气体(48)harmful substance 有害物质(35)header 分水器、集水器(30、31)heat and moisture transfer 热湿交换(67)heat balance 热平衡(35)heat conduction coefficient 导热系数(16)heat conductivity 导热系数(16)heat distributing network 热网(15)heat emitter 散热器(29)heat endurance 热稳定性(17)heat exchanger 换热器(27)heat flowmeter 热流计(103)heat flow rate 热流量(16)heat gain from appliance and equipment 设备散热量(61)heat gain from lighting 照明散热量(61)heat gain from occupant 人体散热量(61)heat insulating window 保温窗(41)heat(thermal)insuation 隔热(39)heat(thermal)lag 延迟时间(18)heat loss 耗热量(18)heat loss by infiltration 冷风渗透耗热量(19)heat-operated refrigerating system 热力制冷系统(81)heat-operated refrigetation 热力制冷(80)heat pipe 热管(74)heat pump 热泵(85)heat pump air conditioner 热泵式空气调节器(71)heat release 散热量(38)heat resistance 热阻(16)heat screen 隔热屏(39)heat shield 隔热屏(39)heat source 热源(13)heat storage 蓄热(61)heat storage capacity 蓄热特性(61)heat supply 供热(14)heat supply network 热网(15)heat transfer 传热(15)heat transmission 传热(15)heat wheel 转轮式换热器(73)heated thermometer anemometer 热风速仪(103)heating 采暖、供热、加热(11、14、66)heating appliance 采暖设备(27)heating coil 热盘管(74)heating coil section 加热段(71)heating equipment 采暖设备(27)heating load 热负荷(19)heating medium 热媒(13)heating medium parameter 热媒参数(14)heating pipeline 采暖管道(22)heating system 采暖系统(20)heavy work 重作业(105)high-frequency noise 高频噪声(98)high-pressure ho twater heating 高温热水采暖(12)high-pressure steam heating 高压蒸汽采暖(12)high temperature water heating 高温热水采暖(12)hood 局部排风罩(41)horizontal water-film syclonet 卧式旋风水膜除尘器(57)hot air heating 热风采暖(12)hot air heating system 热风采暖系统(20)hot shop 热车间(39)hot water boiler 热水锅炉(27)hot water heating 热水采暖(11)hot water system 热水采暖系统(20)hot water pipe 热水管(22)hot workshop 热车间(39)hourly cooling load 逐时冷负荷(62)hourly sol-air temperature 逐时综合温度(60)humidification 加湿(66)humidifier 加湿器(72)humididier section 加湿段(71)humidistat 恒湿器(94)humidity ratio 含湿量(65)hydraulic calculation 水力计算(24)hydraulic disordeer 水力失调(26)hydraulic dust removal 水力除尘(46)hydraulic resistance balance 阻力平衡(26)hydraulicity 水硬性(45)hydrophilic dust 亲水性粉尘(43)hydrophobic dust 疏水性粉尘(43)Iimpact dust collector 冲激式除尘器(58)impact tube 皮托管(103)impedance muffler 阻抗复合消声器(99)inclined damper 斜插板阀(53)index circuit 最不利环路(24)indec of thermal inertia (valueD) 热惰性指标(D值)(17)indirect heat exchanger 表面式换热器(28)indirect refrigerating sys 间接制冷系统(80)indoor air design conditions 室内在气计算参数(5)indoor air velocity 室内空气流速(4)indoor and outdoor design conditions 室内外计算参数(2)indoor reference for air temperature and relative humidity 室内温湿度基数(5)indoor temperature (humidity) 室内温(湿)度(4)induction air-conditioning system 诱导式空气调节系统(64)induction unit 诱导器(72)inductive ventilation 诱导通风(34)industral air conditioning 工艺性空气调节(59)industrial ventilation 工业通风(33)inertial dust separator 惯性除尘器(56)infiltration heat loss 冷风渗透耗热量(19)infrared humidifier 红外线加湿器(73)infrared radiant heater 红外线辐射器(30)inherent regulation of controlled plant 调节对象自平衡(87)initial concentration of dust 初始浓度(47)initial resistance of filter 过滤器初阻力(47)input variable 输入量(89)insulating layer 保温层(105)integral enclosure 整体密闭罩(42)integral time 积分时间(89)interlock protection 联锁保护(91)intermittent dust removal 定期除灰(48)intermittent heating 间歇采暖(11)inversion layer 逆温层(50)inverted bucket type steam trap 倒吊桶式疏水器(32)irradiance 辐射照度(4)isoenthalpy 等焓线(66)isobume 等湿线(66)isolator 隔振器(101)isotherm 等温线(66)isothermal humidification 等温加湿(67)isothermal jet 等温射流(68)Jjet 射流(68)jet axial velocity 射流轴心速度(69)jet divergence angle 射流扩散角(69)jet in a confined space 受限射流(68)Kkatathermometer 卡他温度计(102)Llaboratory hood 排风柜(42)lag of controlled plant 调节对象滞后(87)large space enclosure 大容积密闭罩(42)latent heat 潜热(60)lateral exhaust at the edge of a bath 槽边排风罩(42)lateral hoodlength of pipe section 侧吸罩(42)length of pipe section 管段长度(25)light work 轻作业(105)limit deflection 极限压缩量(101)limit switch 限位开关(95)limiting velocity 极限流速(26)linear flow characteristic 线性流量特性(89)liquid-level ga[u]ge 液位计(103)liquid receiver 贮液器(84)lithium bromide 溴化锂(78)lithium-bromide absorption-type refrigerating machine 溴化锂吸收式制冷机(84)lithium chloride resistance hygrometer氯化锂电阻湿度计(93)load pattern 负荷特性(62)local air conditioning 局部区域空气调节(59)local air suppiy system 局部送风系统(40)local exhaustventilation (LEV) 局部排风(34)local exhaust system 局部排风系统(40)local heating 局部采暖(11)local relief 局部送风(34)local relief system 局部送风系统(40)local resistance 局部阻力(25)local solartime 地方太阳时(10)local ventilation 局部通风(34)local izedairsupply for air-heating 集中送风采暖(12)local ized air control 就地控制(91)loop 环路(24)louver 百叶窗(41)low-frequencynoise 低频噪声(98)low-pressure steam heating 低压蒸汽采暖(12)lyophilic dust 亲水性粉尘(43)lyophobic dust 疏水性粉尘(43)Mmain 总管、干管(22)main duct 通风〕总管、〔通风〕干管(51)main pipe 总管、干管(22)make-up water pump 补给水泵(28)manual control 手动控制(91)mass concentration 质量浓度(36)maximum allowable concentration (MAC) 最高容许浓度(36)maximum coefficient of heat transfer 最大传热系数(17)maximum depth of frozen ground 最大冻土深度(7)maximum sum of hourly colling load 逐时冷负荷综合最大值(62)mean annual temperature (humidity) 年平均温(湿)度(6)mean daily temperature (humidity) 日平均温(湿)度(5)mean dekad temperature (humidity) 旬平均温(湿)度(6)mean monthly maximum temperature 月平均最高温度(6)mean monthly minimum temperature 月平均最低温度(6)mean monthly temperature (humidity) 月平均温(湿)度(6)mean relative humidity 平均相对湿度(7)mean wind speed 平均风速(7)mechanical air supply system 机械送风系统(40)mechanical and hydraulic combined dust removal 联合除尘(46)mechanical anemometer 机械式风速仪(103)mechanical cleaning off dust 机械除尘(46)mechanical dust removal 机械排风系统(40)mechanical exhaust system 机械通风系统(40)mechanical ventilation 机械通风(33)media velocity 过滤速度(48)metal radiant panel 金属辐射板(30)metal radiant panel heating 金属辐射板采暖(13)micromanometer 微压计(103)micropunch plate muffler 微穿孔板消声器(90)mid-frequency noise 中频噪声(98)middle work 中作业(105)midfeed system 中分式系统(22)minimum fresh air requirmente 最小新风量(68)minimum resistance of heat transfer 最小传热阻(17)mist 雾(44)mixing box section 混合段(71)modular air handling unit 组合式空气调节机组(71)moist air 湿空气(65)moisture excess 余湿(35)moisure gain 散湿量(61)moisture gain from appliance and equipment 设备散湿量(61)moisturegain from occupant 人体散湿量(61)motorized valve 电动调节阀(95)motorized (pneumatic) 电(气)动两通阀(95)2-way valvemotorized (pneumatic)3-way valve 电(气)动三通阀(95)movable support 活动支架(24)muffler 消声器(99)muffler section 消声段(72)multi-operating mode automtic conversion 工况自动转换(90)multi-operating mode control system 多工况控制系统(92)multiclone 多管〔旋风〕除尘器(56)multicyclone 多管〔旋风〕除尘器(56)multishell condenser 组合式冷凝器(82)Nnatural and mechanical combined ventilation 联合通风(33)natural attenuation quantity of noise 噪声自然衰减量(99)natural exhaust system 自然排风系统(37)natural freguency 固有频率(100)natural ventilation 自然通风(33)NC-curve[s] 噪声评价NC曲线(97)negative freedback 负反馈(86)neutral level 中和界(39)neutral pressure level 中和界(39)neutral zone 中和界(39)noise 噪声(97)noise control 噪声控制(98)noise criter ioncurve(s) 噪声评价NC曲线(97)noisc rating number 噪声评价NR曲线(97)noise reduction 消声(99)non azeotropic mixture refragerant 非共沸溶液制冷剂(77)non-commonsection 非共同段(25)non condensable gas 不凝性气体(78)non condensable gas purger 不凝性气体分离器(84)non-isothermal jct 非等温射流(68)nonreturn damper 〔通风〕止回阀(53)nonreturn valve 止回阀(31)normal coldest month 累年最冷月(3)normal coldest 3-month period 累年最冷三个月(3)normal hottest month 累年最热月(3)normal hottest 3month period 累年最热三个月(3)normal three summer months 累年最热三个月(3)normal three winter months 累年最冷三个月(3)normals 累年值(3)nozzle outlet air suppluy 喷口送风(69)number concentration 计数浓度(36)number of degree-day of heating period 采暖期度日数(9)Ooctave 倍频程(97)1/3 octave 倍频程(97)octave band 倍频程(97)oil cooler 油冷却器(84)oill-fired unit heater 燃油热风器(30)one-and-two pipe combined heating system 单双管混合式采暖系统(21)one (single)-pipe circuit (cross-over) heating system 单管跨越式采暖系统(21)one(single)-pipe heating system 单管采暖系统(21)one(single)-pipe loop circuit heating system 水平单管采暖系统(21)one(single)-pipe seriesloop heating system 单管顺序式采暖系统(21)one-third octave band 倍频程(97)on-of control 双位调节(88)open loop control 开环控制(86)open return 开式回水(15)open shell and tube condenser 立式壳管式冷凝器(82)open tank 开式水箱(28)operating pressure 工作压力(27)operating range 作用半径(26)opposed multiblade damper 对开式多叶阀(52)organized air supply 有组织进风(33)organized exhaust 有组织排风(34)organized natural ventilation 有组织自然通风(37)outdoor air design conditions 室外空气计算参数(7)outdoor ctitcal air temperature for heating 采暖室外临界温度(9)outdoor design dry-bulb temperature for summer air conlitioning 夏季空气调节室外计算干球温度(8)outdoor design hourly temperature for summer air conditioning 夏季空气调节室外计算逐时温度(9)outdoor design mean daily temperature for summer air conditioning 夏季空气调节室外计算日平均温度(9)outdoor design relative humidityu for summer ventilation 夏季通风室外计算相对湿度(8)outdoor design relative humidity for winter air conditioning 冬季空气调节室外计算相对湿度(8)outdoor design temperature ture for calculated envelope in winter冬季围护结构室外计算温度(8)outdoor design temperature ture for heating 采暖室外计算温度(7)outdoor design temperature for summer ventilation 夏季通风室外计算温度(8)outdoor design temperature for winter air conditioning 冬季空气调节室外计算温度(8)outdoor design temperature for winter vemtilation 冬季通风室外计算温度(7)outdoor designwet-bulb temperature for summer air conditioning 夏季空气调节室外计算湿球温度(8)outdoor mean air temperature during heating period 采暖期室外平均温度(9)outdoor temperature(humidity) 室外温(湿)度(5)outlet air velocity 出口风速(70)out put variable 输出量(89)overall efficiency of separation 除尘效率(47)overall heat transmission coefficient 传热系数(16)overflow pipe 溢流管(23)overheat steam 过热蒸汽(14)overlapping averages 滑动平均(4)overshoot 超调量(88)Ppackaged air conditioner 整体式空气调节器(70)packaged heat pump 热泵式空气调节器(71)packed column 填料塔(58)packed tower 填料塔(58)panel heating 辐射采暖(12)parabolic flow character-istic 抛物线流量特性(90)parallel multiblade damperin 平行式多叶阀(53)parameter detection 参数检测(90)part 通风〕部件(52)partial enclosure 局部密闭罩(42)partial pressure of water vapo[u]r 水蒸汽分压力(6)particle 粒子(44)particle counter 粒子计数器(104)particle number concentration 计数浓度(36)particle size 粒径(44)particle size distribution 粒径分布(44)particulate 粒子(44)particulate collector 除尘器(56)particulates 大气尘(43)passage ventilating duct 通过式风管(52)penetration rate 穿透率(47)percentage of men,women and children 群集系数(62)percentage of possible sunshine 日照率(7)percentage of return air 回风百分比(68)perforated ceiling air supply 孔板送风(69)perforated plate tower 筛板塔(58)periodic dust dislodging 定期除灰(48)piece (通风〕部件(52)pipe fittings 管道配件(23)pipe radiator 光面管散热器(29)pipe section 管段(25)pipe coil 光面管放热器(29)pitot tube 皮托管(103)plate heat exchanger 板式换热器(73)plenum chamber 静压箱(74)plenum space 稳压层(70)plug 丝堵(24)plume 烟羽(50)plume rise height 烟羽抬升高度(50)PNC-curve[s] 噪声评价PNC曲线(97)pneumatic conveying 气力输送(46)pueumatic transport 气力输送(46)pneumatic valve 气动调节阀(95)pneumo-electrical convertor 气-电转换器(94)positioner 定位器(95)positive feedback 正反馈(86)powerroof ventilator 屋顶通风机(55)preferred noise criteria curve[s] 噪声评价PNC曲线(97)pressure drop 压力损失(26)pressure enthalpy chart 压焓图(77)pressure ga[u]ge 压力表(103)pressure of steam supply 供汽压力(14)pressure reducing valve 减压阀(31)pressure relief device 泄压装置(53)pressure relief valve 安全阀(31)pressure thermometer 压力式温度计(102)pressure volume chart 压容图(77)primary air fan-coil system 风机盘管加新风系统(64)primary air system 新风系统(64)primary retirn air 一次回风(68)process air conditioning 工艺性空气调节(59)program control 程序控制(91)proportional band 比例带(89)proportional control 比例调节(88)proportional-integral (PI)control 比例积分调节(88)proportional-integralderivative(PID)control 比例积分微分调节(88)protected(roof)monitor 避风天窗(39)psychrometric chart 声级计(104)pulvation action 干湿球温度表(102)push-pull hood 焓湿图(65)pulvation action 尘化作用(45)push-pull hood 吹吸式排风罩(42)Qquick open flow characteristic 快开流量特性(89)Rradiant heating 辐射采暖(12)radiant intensity 辐射强度(4)radiation intensity 辐射强度(4)radiator 散热器(29)radiator heating 散热器采暖(12)radiator heating system 散热器采暖系统(20)radiator valve 散热器调节阀(32)rating under air conditioning condition 空调工况制冷量(75)reactive muffler 抗性消声器(99)receiver 贮液器(84)receiving hood 接受式排风罩(42)reciprocating compressor 活塞式压缩机(82)recirculation cavity 空气动力阴影区(38)recording thermometer 自记温度计(102)reducing coupling 异径管接头(24)reducing valve 减压阀(31)reentrainment of dust 二次扬尘(45)refrigerant 制冷剂(77)[refrigerating] coefficient of performance (COP) (制冷〕性能系数(76)refrigerating compressor 制冷压缩机(81)refrigerating cycle 制冷循环(79)refrigerating effect 制冷量(75)refrigerating engineering 制冷工程(75)refrigerating machine 制冷机(81)refrigerating medium 载冷剂(78)refrigerating planttoom 制冷机房(77)refrigerating station 制冷机房(77)refrigerating system 制冷系统(80)refrigeration 制冷(75)regenerative noise 再生噪声(98)register 百叶型风口(54)regulator 调节器(94)reheat air conditioning system 再热式空气调节系统(63)relative humidity 相对湿度(3)relay 继电器(95)remote control 遥控(90)resistance of heat transfer 传热阻(17)resistance thermometer 电阻温度计(93)resistance to water vapo[u]r permeability 蒸汽渗透阻(18)resistance to water vapo[u]r permeation 蒸汽渗透阻(18)resistive muffler 阻性消声器(99)resistivity 比电阻(45)resonance 共振(100)resonant frequency 共振频率(100)response curve of controlled plant 调节对象正升曲线(87)return air 回风(70)return air inlet 回风口(70)return branch of radiator 散热器回水支管(23)return fan 回风机(72)return flow zone 回流区(69)return water temperataure 回水温度(14)reverse Carnot cycle 逆卡诺循环(79)reversed return system 同程式系统(20)reversible cycle 可逆循环(79)rim exhaust 槽边排风罩(42)rim ventilation 槽边通风(34)。

暖通空调专业外文翻译 --空调系统

暖通空调专业外文翻译 --空调系统

英文文献Air Conditioning SystemsAir conditioning has rapidly grown over the past 50 years, from a luxury to a standard system included in most residential and commercial buildings. In 1970, 36% of residences in the U.S. were either fully air conditioned or utilized a room air conditioner for cooling (Blue, et al., 1979). By 1997, this number had more than doubled to 77%, and that year also marked the first time that over half (50.9%) of residences in the U.S. had central air conditioners (Census Bureau, 1999). An estimated 83% of all newhomes constructed in 1998 had central air conditioners (Census Bureau, 1999). Air conditioning has also grown rapidly in commercial buildings. From 1970 to 1995, the percentage of commercial buildings with air conditioning increased from 54 to 73% (Jackson and Johnson, 1978, and DOE, 1998).Air conditioning in buildings is usually accomplished with the use of mechanical or heat-activated equipment. In most applications, the air conditioner must provide both cooling and dehumidification to maintain comfort in the building. Air conditioning systems are also used in other applications, such as automobiles, trucks, aircraft, ships, and industrial facilities. However, the description of equipment in this chapter is limited to those commonly used in commercial and residential buildings.Commercial buildings range from large high-rise office buildings to the corner convenience store. Because of the range in size and types of buildings in the commercial sector, there is a wide variety of equipment applied in these buildings. For larger buildings, the air conditioning equipment is part of a total system design that includes items such as a piping system, air distribution system, and cooling tower. Proper design of these systems requires a qualified engineer. The residential building sector is dominatedby single family homes and low-rise apartments/condominiums. The cooling equipment applied in these buildings comes in standard “packages” that are often both sized and installed by the air conditioning contractor.The chapter starts with a general discussion of the vapor compression refrigeration cycle then moves to refrigerants and their selection, followed by packaged Chilled Water Systems。

暖通空调专业-毕业设计外文翻译

暖通空调专业-毕业设计外文翻译

Refrigeration System Performance using Liquid-Suction Heat ExchangersS. A. Klein, D. T. Reindl, and K. BroWnellCollege of EngineeringUniversity of Wisconsin - MadisonAbstractHeat transfer devices are provided in many refrigeration systems to exchange energy betWeen the cool gaseous refrigerant leaving the evaporator and Warm liquid refrigerant exiting the condenser. These liquid-suction or suction-line heat exchangers can, in some cases, yield improved system performance While in other cases they degrade system performance. Although previous researchers have investigated performance of liquid-suction heat exchangers, this study can be distinguished from the previous studies in three Ways. First, this paper identifies a neW dimensionless group to correlate performance impacts attributable to liquid-suction heat exchangers. Second, the paper extends previous analyses to include neW refrigerants. Third, the analysis includes the impact of pressure drops through the liquid-suction heat exchanger on system performance. It is shoWn that reliance on simplified analysis techniques can lead to inaccurate conclusions regarding the impact of liquid-suction heat exchangers on refrigeration system performance. From detailed analyses, it can be concluded that liquid-suction heat exchangers that have a minimal pressure loss on the loW pressure side are useful for systems using R507A, R134a, R12, R404A, R290, R407C, R600, and R410A. The liquid-suction heat exchanger is detrimental to system performance in systems using R22, R32, and R717.IntroductionLiquid-suction heat exchangers are commonly installed in refrigeration systems With the intent of ensuring proper system operation and increasing system performance.Specifically, ASHRAE(1998) states that liquid-suction heat exchangers are effective in:1) increasing the system performance2) subcooling liquid refrigerant to prevent flash gas formation at inlets to expansion devices3) fully evaporating any residual liquid that may remain in the liquid-suction prior to reaching the compressor(s)Figure 1 illustrates a simple direct-expansion vapor compression refrigeration system utilizing a liquid-suction heat exchanger. In this configuration, high temperature liquid leaving the heat rejection device (an evaporative condenser in this case) is subcooled prior to being throttled to the evaporator pressure by an expansion device such as a thermostatic expansion valve. The sink for subcoolingthe liquid is loW temperature refrigerant vapor leaving the evaporator. Thus, the liquid-suction heat exchanger is an indirect liquid-to-vapor heat transfer device. The vapor-side of the heat exchanger (betWeen the evaporator outlet and the compressor suction) is often configured to serve as an accumulator thereby further minimizing the risk of liquid refrigerant carrying-over to the compressor suction. In cases Where the evaporator alloWs liquid carry-over, the accumulator portion of the heat exchanger Will trap and, over time, vaporize the liquid carryover by absorbing heat during the process of subcooling high-side liquid.BackgroundStoecker and Walukas (1981) focused on the influence of liquid-suction heat exchangers in both single temperature evaporator and dual temperature evaporator systems utilizing refrigerant mixtures. Their analysis indicated that liquid-suction heat exchangers yielded greater performance improvements When nonazeotropic mixtures Were used compared With systems utilizing single component refrigerants or azeoptropic mixtures. McLinden (1990) used the principle of corresponding states to evaluate the anticipated effects of neW refrigerants. He shoWed that the performance of a system using a liquid-suction heat exchanger increases as the ideal gas specific heat (related to the molecular complexity of the refrigerant) increases. Domanski and Didion (1993) evaluated the performance of nine alternatives to R22 including the impact of liquid-suction heat exchangers. Domanski et al. (1994) later extended the analysis by evaluating the influence of liquid-suction heat exchangers installed in vapor compression refrigeration systems considering 29 different refrigerants in a theoretical analysis. Bivens et al. (1994) evaluated a proposed mixture to substitute for R22 in air conditioners and heat pumps. Their analysis indicated a 6-7% improvement for the alternative refrigerant system When system modifications included a liquid-suction heat exchanger and counterfloW system heat exchangers (evaporator and condenser). Bittle et al. (1995a) conducted an experimental evaluation of a liquid-suction heat exchanger applied in a domestic refrigerator using R152a. The authors compared the system performance With that of a traditional R12-based system. Bittle et al. (1995b) also compared the ASHRAE method for predicting capillary tube performance (including the effects of liquid-suction heat exchangers) With experimental data. Predicted capillary tube mass floW rates Were Within 10% of predicted values and subcooling levels Were Within 1.7 C (3F) of actual measurements.This paper analyzes the liquid-suction heat exchanger to quantify its impact on system capacity and performance (expressed in terms of a system coefficient of performance, COP). The influence of liquid-suction heat exchanger size over a range of operating conditions (evaporating and condensing) is illustrated and quantified using a number of alternative refrigerants. Refrigerants included in the present analysis are R507A, R404A, R600, R290,R134a, R407C, R410A, R12, R22, R32, and R717. This paper extends the results presented in previous studies in that it considers neW refrigerants, it specifically considers the effects of the pressure drops,and it presents general relations for estimating the effect of liquid-suction heat exchangers for any refrigerant.Heat Exchanger EffectivenessThe ability of a liquid-suction heat exchanger to transfer energy from the Warm liquid to the cool vapor at steady-state conditions is dependent on the size and configuration of the heat transfer device. The liquid-suction heat exchanger performance, expressed in terms of an effectiveness, is a parameter in the analysis. The effectiveness of the liquid-suction heat exchanger is defined in equation (1):Where the numeric subscripted temperature (T) values correspond to locations depicted in Figure 1. The effectiveness is the ratio of the actual to maximum possible heat transfer rates. It is related to the surface area of the heat exchanger. A zero surface area represents a system Without a liquid-suction heat exchanger Whereas a system having an infinite heat exchanger area corresponds to an effectiveness of unity.The liquid-suction heat exchanger effects the performance of a refrigeration system by in fluencing both the high and loW pressure sides of a system. Figure 2 shoWs the key state points for a vapor compression cycle utilizing an idealized liquid-suction heat exchanger on a pressure-enthalpy diagram. The enthalpy of the refrigerant leaving the condenser (state 3) is decreased prior to entering the expansion device (state 4) by rejecting energy to the vapor refrigerant leaving the evaporator (state 1) prior to entering the compressor (state 2). Pressure losses are not shoWn. The cooling of the condensate that occurs on the high pressure side serves to increase the refrigeration capacity and reduce the likelihood of liquid refrigerant flashing prior to reaching the expansion device. On the loW pressure side, the liquid-suction heat exchanger increases the temperature of the vapor entering the compressor and reduces the refrigerant pressure, both of Which increase the specific volume of the refr igerant and thereby decrease the mass floW rate and capacity. A major benefit of the liquid-suction heat exchanger is that it reduces the possibility of liquid carry-over from the evaporator Which could harm the compressor. Liquid carryover can be readily caused by a number of factors that may include Wide fluctuations in evaporator load and poorly maintained expansiondevices (especially problematic for thermostatic expansion valves used in ammonia service).(翻译)冷却系统利用流体吸热交换器克来因教授,布兰顿教授, , 布朗教授威斯康辛州的大学–麦迪逊摘录加热装置在许多冷却系统中被用到,用以制冷时遗留在蒸发器中的冷却气体和离开冷凝器发热流体之间的能量的热交换.这些流体吸收或吸收热交换器,在一些情形中,他们降低了系统性能, 然而系统的某些地方却得到了改善. 虽然以前研究员已经调查了流体吸热交换器的性能, 但是这项研究可能从早先研究的三种方式被加以区别. 首先,这份研究开辟了一个无限的崭新的与流体吸热交换器有关联的群体.其次,这份研究拓宽了早先的分析包括新型制冷剂。

(完整版)暖通空调英语专业词汇大全

(完整版)暖通空调英语专业词汇大全

(完整版)暖通空调英语专业词汇大全附录英汉对照索引AA-weighted sound pressure level A声级(96)absolute humidity 绝对湿度(2)absolute roughness 绝对粗糙度(25)absorbate 吸收质(49)absorbent 吸收剂(49)absorbent 吸声材料(100)absorber 吸收器(85)absorptance for solar radiation 太阳辐射热吸收系数(60)absorption equipment 吸收装置(49)absorption of gas and vapo[u]r 气体吸收(48)absorptiong refrige rationg cycle 吸收式制冷循环(80)absorption-type refrigerating machine吸收式制冷机(84)access door 检查门(55)acoustic absorptivity 吸声系数(100)actual density 真密度(44)actuating element 执行机构(94)actuator 执行机构(94)adaptive control system 自适应控制系统(93)additional factor for exterior door 外门附加率(19)additional factor for intermittent heating 间歇附加率(19)additional factor for wind force 高度附加率(19)additional heat loss 风力附加率(19)adiabatic humidification 附加耗热量(18)adiabatic humidiflcation 绝热加湿(66)adsorbate 吸附质(49)adsorbent 吸附剂(49)adsorber 吸附装置(49)adsorption equipment 吸附装置(49)adsorption of gas and vapo[u]r 气体吸附(48)aerodynamic noise 空气动力噪声(98)aerosol 气溶胶(43)air balance 风量平衡(35)air changes 换气次数(35)air channel 风道(51)air cleanliness 空气洁净度(104)air collector 集气罐(31)air conditioning 空气调节(59)air conditioning condition 空调工况(76)air conditioning equipment 空气调节设备(70)air conditioning machine room 空气调节机房(59)air conditioning system 空气调节系统(62)air conditioning system cooling load 空气调节系统冷负荷(62)air contaminant 空气污染物(51)air-cooled condenser 风冷式冷凝器(82)air cooler 空气冷却器(74)air curtain 空气幕(30)air cushion shock absorber 空气弹簧隔振器(101)air distribution 气流组织(68)air distributor 空气分布器(54)air-douche unit with water atomization喷雾风扇(56)air duct 风管、风道(51)air filter 空气过滤器(58)air handling equipment 空气调节设备(70)air handling unit room 空气调节机房(59)air header 集合管(52)air humidity 空气湿度(2)air inlet 风口(54)air intake 进风口(41)air manifold 集合管(52)air opening 风口(54)air pollutant 空气污染物(51)air pollution 大气污染(50)air preheater 空气预热器(73)air return method 回风方式(70)air return mode 回风方式(70)air return through corridor 走廊回风(70)air space 空气间层(15)air supply method 送风方式(69)air supply mode 送风方式(69)air supply (suction) opening with slide plate 插板式送(吸)风口(54)air supply volume per unit area 单位面积送风量(69)air temperature 空气温度(2)air through tunnel 地道风(40)air-to-air total heat exchanger 全热换热器(73)air-to-cloth ratio 气布比(48)air velocity at work area 作业地带空气流速(5)air velocity at work place 工作地点空气流速(4)air vent 放气阀(31)air-water systen 空气—水系统(64)airborne particles 大气尘(43)air hater 空气加热器(29)airspace 空气间层(15)alarm signal 报警信号(90)ail-air system 全空气系统(63)all-water system 全水系统(64)allowed indoor fluctuation of temperature and relative humidity 室内温湿度允许波动范围(5)ambient noise 环境噪声(97)ammonia 氨(78)amplification factor of centrolled plant 调节对象放大系数(87)amplitude 振幅(100)anergy (77)angle of repose 安息角(44)ange of slide 滑动角(44)angle scale 热湿比(67)angle valve 角阀(31)annual [value] 历年值(3)annual coldest month 历年最冷月(3)annual hottest month 历年最热月(3)anticorrosive 缓蚀剂(78)antifreeze agent 防冻剂(78)antifreeze agent 防冻剂(78)apparatus dew point 机器露点(67)apparent density 堆积密度(45)aqua-ammoniaabsorptiontype-refrigerating machine 氨—水吸收式制冷机(84)aspiation psychrometer 通风温湿度计(102)Assmann aspiration psychrometer 通风温湿度计(102)atmospheric condenser 淋激式冷凝器(83)atmospheric diffusion 大气扩散(40)atmospheric dust 大气尘(43)atmospheric pollution 大气污染(50)atmospheric pressure 大气压力(6atmospheric stability 大气稳定度(50)atmospheric transparency 大气透明度(10)atmospheric turblence 大气湍流(50)automatic control 自动控制(86)automatic roll filter 自动卷绕式过滤器(58)automatic vent 自动放气阀(32)available pressure 资用压力(27)average daily sol-air temperature 日平均综合温度(60)axial fan 轴流式通风机(55)azeotropic mixture refrigerant 共沸溶液制冷剂(77)Bback-flow preventer 防回流装置(53)back pressure of steam trap 凝结水背压力(14)back pressure return 余压回水(15)background noise 背景噪声(98)back plate 挡风板(39)bag filler 袋式除尘器(57)baghouse 袋式除尘器(57)barometric pressure 大气压力(6)basic heat loss 基本耗热量(18)bend muffler 消声弯头(100)bimetallic thermometer 双金属温度计(102)black globe temperature 黑球温度(2)blow off pipe 排污管(23)blowdown 排污管(23)boiler 锅炉(27)boiller house 锅炉房(14)boiler plant 锅炉房(14)boiler room 锅炉房(14)booster 加压泵(29)branch 支管(22)branch duct (通风) 支管(51)branch pipe 支管(22)building envelope 围护结构(15)building flow zones 建筑气流区(37)building heating entry 热力入口(15)bulk density 堆积密度(45)bushing 补心(24)butterfly damper 蝶阀(52)by-pass damper 空气加热器〕旁通阀(41)by-pass pipe 旁通管(23)Ccanopy hood 伞形罩(42)capillary tube 毛细管(84)capture velocity 控制风速(43)capture velocity 外部吸气罩(41)capturing hood 卡诺循环(79)Carnot cycle 串级调节系统(92)cascade control system 铸铁散热器(29)cast iron radiator 催化燃烧(49)catalytic oxidation 催化燃烧(49)ceilling fan 吊扇(56)ceiling panelheating 顶棚辐射采暖(12)center frequency 中心频率(97)central air conditionint system 集中式空气调节系统(63)central heating 集中采暖(11)central ventilation system 新风系统(64)centralized control 集中控制(91)centrifugal compressor 离心式压缩机(82)centrifugal fan 离心式通风机(55)check damper (通风〕止回阀(53)check valve 止回阀(31)chilled water 冷水(76)chilled water system withprimary-secondary pumps 一、二次泵冷水系统(81)chimney (排气〕烟囱(50)circuit 环路(24)circulating fan 风扇(55)circulating pipe 循环管(23)circulating pump 循环泵(29)clean room 洁净室(104)cleaning hole 清扫孔(54)cleaning vacuum plant 真空吸尘装置(58)cleanout opening 清扫孔(54)clogging capacity 容尘量(47)close nipple 长丝(24)closed booth 大容积密闭罩(42)closed full flow return 闭式满管回水(15)closed loop control 闭环控制(87)closed return 闭式回水(15)closed shell and tube condenser 卧式壳管式冷凝器(82)closed shell and tube evaporator 卧式壳管式蒸发器(83)closed tank 闭式水箱(28)coefficient of accumulation of heat 蓄热系数(17)coefficient of atmospheric transpareney 大气透明度(10)coefficient of effective heat emission散热量有效系数(38)coficient of effective heat emission 传热系数(16)coefficient of locall resistance 局部阻力系数(26)coefficient of thermal storage 蓄热系数(17)coefficient of vapo[u]r 蒸汽渗透系数(18)coefficient of vapo[u]r 蒸汽渗透系数(18)coil 盘管(74)collection efficiency 除尘效率(47)combustion of gas and vapo[u]r 气体燃烧(58)comfort air conditioning 舒适性空气调节(59)common section 共同段(25)compensator 补偿器(31)components (通风〕部件(52)compression 压缩(79)compression-type refrigerating machine压缩式制冷机(81)compression-type refrigerating system压缩式制冷系统(81)compression-type refrigeration 压缩式制冷(80)compression-type refrigeration cycle 压缩式制冷循环(79)compression-type water chiller 压缩式冷水机组(81)concentratcd heating 集中采暖(11)concentration of harmful substance 有害物质浓度(36)condensate drain pan 凝结水盘(74)condensate pipe 凝结水管(22)condensate pump 凝缩水泵(29)condensate tank 凝结水箱(28)condensation 冷凝(79)condensation of vapo[u]r 气体冷凝(49)condenser 冷凝器(82)condensing pressure 冷凝压力(75)condensing temperature 冷凝温度(75)condensing unit 压缩冷凝机组(81)conditioned space 空气调节房间(59)conditioned zone 空气调节区(59)conical cowl 锥形风帽(52)constant humidity system 恒湿系统(64)constant temperature and humidity system 恒温恒湿系统(64)constant temperature system 恒温系统(64)constant value control 定值调节(91)constant volume air conditioning system 定风量空气调节系统(63)continuous dust dislodging 连续除灰(48)continuous dust dislodging 连续除灰(48)continuous heating 连续采暖(11)contour zone 稳定气流区(38)control device 控制装置(86)control panel 控制屏(95)control valve 调节阀(95)control velocity 控制风速(43)controlled natural ventilation 有组织自然通风(37)controlled plant 调节对象(86)controlled variable 被控参数(86)controller 调节器(94)convection heating 对流采暖(12)convector 对流散热器(29)cooling 降温、冷却(39、66)cooling air curtain 冷风幕(74)cooling coil 冷盘管(74)cooling coil section 冷却段(72)cooling load from heat 传热冷负荷(62)cooling load from outdoor air 新风冷负荷(62)cooling load from ventilation 新风冷负荷(62)cooling load temperature 冷负荷温度(62)cooling system 降温系统(40)cooling tower 冷却塔(83)cooling unit 冷风机组(56)cooling water 冷却水(76)correcting element 调节机构(95)correcting unit 执行器(94)correction factor for orientaion 朝向修正率(19)corrosion inhibitor 缓蚀剂(78)coupling 管接头(23)cowl 伞形风帽(52)criteria for noise control cross 噪声控频标准(98)cross fan 四通(24)crross-flow fan 贯流式通风机(55)cross-ventilation 穿堂风(37)cut diameter 分割粒径(47)cyclone 旋风除尘器(56)cyclone dust separator 旋风除尘器(56)cylindrical ventilator 筒形风帽(52)Ddaily range 日较差(6)damping factot 衰减倍数(17)data scaning 巡回检测(90)days of heating period 采暖期天数(9)deafener 消声器(99)decibel(dB) 分贝(96)degree-days of heating period 采暖期度日数(9)degree of subcooling 过冷度(79)degree of superheat 过热度(80)dehumidification 减湿(66)dehumidifying cooling 减湿冷却(66)density of dust particle 真密度(44)derivative time 微分时间(89)design conditions 计算参数(2)desorption 解吸(49)detecting element 检测元件(93)detention period 延迟时间(18)deviation 偏差(87)dew-point temperature 露点温度(2)dimond-shaped damper 菱形叶片调节阀(53)differential pressure type flowmeter 差压流量计(103)diffuser air supply 散流器(54)diffuser air supply 散流器送风(69)direct air conditioning system 直流式空气调节系统(64)direct combustion 直接燃烧(48)direct-contact heat exchanger 汽水混合式换热器(28)direct digital control (DDC) system 直接数字控制系统(92)direct evaporator 直接式蒸发器(83)direct-fired lithiumbromideabsorption-type refrigerating machine 直燃式溴化锂吸收式制冷机(85)direct refrigerating system 直接制冷系统(80)direct return system 异程式系统(20)direct solar radiation 太阳直接辐射(10)discharge pressure 排气压力(76)discharge temperature 排气温度(76)dispersion 大气扩散(49)district heat supply 区域供热(15)district heating 区域供热(15)disturbance frequency 扰动频率(100)dominant wind direction 最多风向(7)double-effect lithium-bromideabsorption-type refigerating machine 双效溴化锂吸收式制冷机(85)double pipe condenser 套管式冷凝器(82)down draft 倒灌(39)downfeed system 上分式系统(21)downstream spray pattern 顺喷(67)drain pipe 泄水管(23)drain pipe 排污管(23)droplet 液滴(44)drv air 干空气(65)dry-and-wet-bulb thermometer 干湿球温度表(102)dry-bulb temperature 干球温度(2)dry cooling condition 干工况(67)dry dust separator 干式除尘器(56)dry expansion evaporator 干式蒸发器(83)dry return pipe 干式凝结水管(22)dry steam humidifler 干蒸汽加湿器(72)dualductairconing ition 双风管空气调节系统(63)dual duct system 双风管空气调节系统(63)duct 风管、风道(51)dust 粉尘(43)dust capacity 容尘量(47)dust collector 除尘器(56)dust concentration 含尘浓度(46)dust control 除尘(46)dust-holding capacity 容尘量(47)dust removal 除尘(46)dust removing system 除尘系统(46)dust sampler 粉尘采样仪(104)dust sampling meter 粉尘采样仪(104)dust separation 除尘(45)dust separator 除尘器(56)dust source 尘源(45)dynamic deviation 动态偏差(88)Eeconomic resistance of heat transfer 经济传热阻(17)economic velocity 经济流速(26)efective coefficient of local resistance 折算局部阻力系数(26)effective legth 折算长度(25)effective stack height 烟囱有效高度(50)effective temperature difference 送风温差(70)ejector 喷射器(85)ejetor 弯头(24)elbow 电加热器(73)electric heater 电加热段(71)electric panel heating 电热辐射采暖(13)electric precipitator 电除尘器(57)electricradian theating 电热辐射采暖(13)electricresistance hu-midkfier 电阻式加湿器(72)electro-pneumatic convertor 电—气转换器(94)electrode humidifler 电极式加湿器(73)electrostatic precipi-tator 电除尘器(57)eliminator 挡水板(74)emergency ventilation 事故通风(34)emergency ventilation system 事故通风系统(40)emission concentration 排放浓度(51)enclosed hood 密闭罩(42)enthalpy 焓(76)enthalpy control system 新风〕焓值控制系统(91)enthalpy entropy chart 焓熵图(77)entirely ventilation 全面通风(33)entropy 熵(76)environmental noise 环境噪声(97)equal percentage flow characteristic 等百分比流量特性(89)equivalent coefficient of local resistance 当量局部阻力系数(26)equivalent length 当量长度(25)equivalent[continuous A] sound level 等效〔连续A〕声级(96)evaporating pressure 蒸发压力(75)evaporating temperature 蒸发温度(75)evaporative condenser 蒸发式冷凝器(83)evaporator 蒸发器(83)excess heat 余热(35)excess pressure 余压(37)excessive heat 余热(35)exergy (76)exhaust air rate 排风量(35)exhaust fan 排风机(41)exhaust fan room 排风机室(41)exhaust hood 局部排风罩(41)exhaust inlet 吸风口(54)exhaust opening 吸风口(54)exhaust opening orinlet 风口(54)exhaust outlet 排风口(54)exaust vertical pipe 排气〕烟囱(50)exhausted enclosure 密闭罩(42)exit 排风口(54)expansion 膨胀(79)expansion pipe 膨胀管(23)explosion proofing 防爆(36)expansion steam trap 恒温式疏水器(32)expansion tank 膨胀水箱(28)extreme maximum temperature 极端最高温度(6)extreme minimum temperature 极端最低温度(6)Ffabric collector 袋式除尘器(57)face tube 皮托管(103)face velocity 罩口风速(42)fan 通风机(55)fan-coil air-conditioning system 风机盘管空气调节系统(64)fan-coil system 风机盘管空气调节系统(64)fan-coil unit 风机盘管机组(72)fan house 通风机室(41)fan room 通风机室(41)fan section 风机段(72)feed-forward control 前馈控制(91)feedback 反馈(86)feeding branch tlo radiator 散热器供热支管(23)fibrous dust 纤维性粉尘(43)fillter cylinder for sampling 滤筒采样管(104)fillter efficiency 过滤效率(47)fillter section 过滤段(71)filltration velocity 过滤速度(48)final resistance of filter 过滤器终阻力(47)fire damper 防火阀(53)fire prevention 防火(36)fire protection 防火(36)fire-resisting damper 防火阀(53)fittings (通风〕配件(52)fixed set-point control 定值调节(91)fixed support 固定支架(24)fixed time temperature (humidity) 定时温(湿)度(5)flame combustion 热力燃烧(48)flash gas 闪发气体(78)flash steam 二次蒸汽(14)flexible duct 软管(52)flexible joint 柔性接头(52)float type steam trap 浮球式疏水器(32)float valve 浮球阀(31)floating control 无定位调节(88)flooded evaporator 满液式蒸发器(83)floor panel heating 地板辐射采暖(13)flow capacity of control valve 调节阀流通能力(90)flow characteristic of control valve 调节阀流量特性(89)foam dust separator 泡沫除尘器(57)follow-up control system 随动系统(92)forced ventilation 机械通风(33)forward flow zone 射流区(69)foul gas 不凝性气体(78)four-pipe water system 四管制水系统(65)fractional separation efficiency 分级除尘效率(47)free jet 自由射流(68)free sillica 游离二氧化硅(43)free silicon dioxide 游离二氧化硅(43)freon 氟利昂(77)frequency interval 频程(97)frequency of wind direction 风向频率(7)fresh air handling unit 新风机组(71)fresh air requirement 新风量(67)friction factor 摩擦系数(25)friction loss 摩擦阻力(25)frictional resistance 摩擦阻力(25)fume 烟〔雾〕(44)fumehood 排风柜(42)fumes 烟气(44)Ggas-fired infrared heating 煤气红外线辐射采暖(13)gas-fired unit heater 燃气热风器(30)gas purger 不凝性气体分离器(84)gate valve 闸阀(31)general air change 全面通风(33)general exhaust ventilation (GEV) 全面排风(33)general ventilation 全面通风(33)generator 发生器(85)global radiation 总辐射(10)grade efficiency 分级除尘效率(47)granular bed filter 颗粒层除尘器(57)granulometric distribution 粒径分布(44)gravel bed filter 颗粒层除尘器(57)gravity separator 沉降室(56)ground-level concentration 落地浓度(51)guide vane 导流板(52)Hhair hygrometor 毛发湿度计(102)hand pump 手摇泵(29)harmful gas and vapo[u]r 有害气体(48)harmful substance 有害物质(35)header 分水器、集水器(30、31)heat and moisture transfer 热湿交换(67)heat balance 热平衡(35)heat conduction coefficient 导热系数(16)heat conductivity 导热系数(16)heat distributing network 热网(15)heat emitter 散热器(29)heat endurance 热稳定性(17)heat exchanger 换热器(27)heat flowmeter 热流计(103)heat flow rate 热流量(16)heat gain from appliance and equipment 设备散热量(61)heat gain from lighting 照明散热量(61)heat gain from occupant 人体散热量(61)heat insulating window 保温窗(41)heat(thermal)insuation 隔热(39)heat(thermal)lag 延迟时间(18)heat loss 耗热量(18)heat loss by infiltration 冷风渗透耗热量(19)heat-operated refrigerating system 热力制冷系统(81)heat-operated refrigetation 热力制冷(80)heat pipe 热管(74)heat pump 热泵(85)heat pump air conditioner 热泵式空气调节器(71)heat release 散热量(38)heat resistance 热阻(16)heat screen 隔热屏(39)heat shield 隔热屏(39)heat source 热源(13)heat storage 蓄热(61)heat storage capacity 蓄热特性(61)heat supply 供热(14)heat supply network 热网(15)heat transfer 传热(15)heat transmission 传热(15)heat wheel 转轮式换热器(73)heated thermometer anemometer 热风速仪(103)heating 采暖、供热、加热(11、14、66)heating appliance 采暖设备(27)heating coil 热盘管(74)heating coil section 加热段(71)heating equipment 采暖设备(27)heating load 热负荷(19)heating medium 热媒(13)heating medium parameter 热媒参数(14)heating pipeline 采暖管道(22)heating system 采暖系统(20)heavy work 重作业(105)high-frequency noise 高频噪声(98)high-pressure ho twater heating 高温热水采暖(12)high-pressure steam heating 高压蒸汽采暖(12)high temperature water heating 高温热水采暖(12)hood 局部排风罩(41)horizontal water-film syclonet 卧式旋风水膜除尘器(57)hot air heating 热风采暖(12)hot air heating system 热风采暖系统(20)hot shop 热车间(39)hot water boiler 热水锅炉(27)hot water heating 热水采暖(11)hot water system 热水采暖系统(20)hot water pipe 热水管(22)hot workshop 热车间(39)hourly cooling load 逐时冷负荷(62)hourly sol-air temperature 逐时综合温度(60)humidification 加湿(66)humidifier 加湿器(72)humididier section 加湿段(71)humidistat 恒湿器(94)humidity ratio 含湿量(65)hydraulic calculation 水力计算(24)hydraulic disordeer 水力失调(26)hydraulic dust removal 水力除尘(46)hydraulic resistance balance 阻力平衡(26)hydraulicity 水硬性(45)hydrophilic dust 亲水性粉尘(43)hydrophobic dust 疏水性粉尘(43)Iimpact dust collector 冲激式除尘器(58)impact tube 皮托管(103)impedance muffler 阻抗复合消声器(99)inclined damper 斜插板阀(53)index circuit 最不利环路(24)indec of thermal inertia (valueD) 热惰性指标(D值)(17)indirect heat exchanger 表面式换热器(28)indirect refrigerating sys 间接制冷系统(80)indoor air design conditions 室内在气计算参数(5)indoor air velocity 室内空气流速(4)indoor and outdoor design conditions 室内外计算参数(2)indoor reference for air temperature and relative humidity 室内温湿度基数(5)indoor temperature (humidity) 室内温(湿)度(4)induction air-conditioning system 诱导式空气调节系统(64)induction unit 诱导器(72)inductive ventilation 诱导通风(34)industral air conditioning 工艺性空气调节(59)industrial ventilation 工业通风(33)inertial dust separator 惯性除尘器(56)infiltration heat loss 冷风渗透耗热量(19)infrared humidifier 红外线加湿器(73)infrared radiant heater 红外线辐射器(30)inherent regulation of controlled plant 调节对象自平衡(87)initial concentration of dust 初始浓度(47)initial resistance of filter 过滤器初阻力(47)input variable 输入量(89)insulating layer 保温层(105)integral enclosure 整体密闭罩(42)integral time 积分时间(89)interlock protection 联锁保护(91)intermittent dust removal 定期除灰(48)intermittent heating 间歇采暖(11)inversion layer 逆温层(50)inverted bucket type steam trap 倒吊桶式疏水器(32)irradiance 辐射照度(4)isoenthalpy 等焓线(66)isobume 等湿线(66)isolator 隔振器(101)isotherm 等温线(66)isothermal humidification 等温加湿(67)isothermal jet 等温射流(68)Jjet 射流(68)jet axial velocity 射流轴心速度(69)jet divergence angle 射流扩散角(69)jet in a confined space 受限射流(68)Kkatathermometer 卡他温度计(102)Llaboratory hood 排风柜(42)lag of controlled plant 调节对象滞后(87)large space enclosure 大容积密闭罩(42)latent heat 潜热(60)lateral exhaust at the edge of a bath 槽边排风罩(42)lateral hoodlength of pipe section 侧吸罩(42)length of pipe section 管段长度(25)light work 轻作业(105)limit deflection 极限压缩量(101)limit switch 限位开关(95)limiting velocity 极限流速(26)linear flow characteristic 线性流量特性(89)liquid-level ga[u]ge 液位计(103)liquid receiver 贮液器(84)lithium bromide 溴化锂(78)lithium-bromide absorption-type refrigerating machine 溴化锂吸收式制冷机(84)lithium chloride resistance hygrometer 氯化锂电阻湿度计(93)load pattern 负荷特性(62)local air conditioning 局部区域空气调节(59)local air suppiy system 局部送风系统(40)local exhaustventilation (LEV) 局部排风(34)local exhaust system 局部排风系统(40)local heating 局部采暖(11)local relief 局部送风(34)local relief system 局部送风系统(40)local resistance 局部阻力(25)local solartime 地方太阳时(10)local ventilation 局部通风(34)local izedairsupply for air-heating 集中送风采暖(12)local ized air control 就地控制(91)loop 环路(24)louver 百叶窗(41)low-frequencynoise 低频噪声(98)low-pressure steam heating 低压蒸汽采暖(12)lyophilic dust 亲水性粉尘(43)lyophobic dust 疏水性粉尘(43)Mmain 总管、干管(22)main duct 通风〕总管、〔通风〕干管(51)main pipe 总管、干管(22)make-up water pump 补给水泵(28)manual control 手动控制(91)mass concentration 质量浓度(36)maximum allowable concentration (MAC) 最高容许浓度(36)maximum coefficient of heat transfer 最大传热系数(17)maximum depth of frozen ground 最大冻土深度(7)maximum sum of hourly colling load 逐时冷负荷综合最大值(62)mean annual temperature (humidity) 年平均温(湿)度(6)mean daily temperature (humidity) 日平均温(湿)度(5)mean dekad temperature (humidity) 旬平均温(湿)度(6)mean monthly maximum temperature 月平均最高温度(6)mean monthly minimum temperature 月平均最低温度(6)mean monthly temperature (humidity) 月平均温(湿)度(6)mean relative humidity 平均相对湿度(7)mean wind speed 平均风速(7)mechanical air supply system 机械送风系统(40)mechanical and hydraulic combined dust removal 联合除尘(46)mechanical anemometer 机械式风速仪(103)mechanical cleaning off dust 机械除尘(46)mechanical dust removal 机械排风系统(40)mechanical exhaust system 机械通风系统(40)mechanical ventilation 机械通风(33)media velocity 过滤速度(48)metal radiant panel 金属辐射板(30)metal radiant panel heating 金属辐射板采暖(13)micromanometer 微压计(103)micropunch plate muffler 微穿孔板消声器(90)mid-frequency noise 中频噪声(98)middle work 中作业(105)midfeed system 中分式系统(22)minimum fresh air requirmente 最小新风量(68)minimum resistance of heat transfer 最小传热阻(17)mist 雾(44)mixing box section 混合段(71)modular air handling unit 组合式空气调节机组(71)moist air 湿空气(65)moisture excess 余湿(35)moisure gain 散湿量(61)moisture gain from appliance and equipment 设备散湿量(61)moisturegain from occupant 人体散湿量(61)motorized valve 电动调节阀(95)motorized (pneumatic) 电(气)动两通阀(95)2-way valvemotorized (pneumatic)3-way valve 电(气)动三通阀(95)movable support 活动支架(24)muffler 消声器(99)muffler section 消声段(72)multi-operating mode automtic conversion 工况自动转换(90)multi-operating mode control system 多工况控制系统(92)multiclone 多管〔旋风〕除尘器(56)multicyclone 多管〔旋风〕除尘器(56)multishell condenser 组合式冷凝器(82)Nnatural and mechanical combined ventilation 联合通风(33)natural attenuation quantity of noise 噪声自然衰减量(99)natural exhaust system 自然排风系统(37)natural freguency 固有频率(100)natural ventilation 自然通风(33)NC-curve[s] 噪声评价NC曲线(97)negative freedback 负反馈(86)neutral level 中和界(39)neutral pressure level 中和界(39)neutral zone 中和界(39)noise 噪声(97)noise control 噪声控制(98)noise criter ioncurve(s) 噪声评价NC曲线(97)noisc rating number 噪声评价NR曲线(97)noise reduction 消声(99)non azeotropic mixture refragerant 非共沸溶液制冷剂(77)non-commonsection 非共同段(25)non condensable gas 不凝性气体(78)non condensable gas purger 不凝性气体分离器(84)non-isothermal jct 非等温射流(68)nonreturn damper 〔通风〕止回阀(53)nonreturn valve 止回阀(31)normal coldest month 累年最冷月(3)normal coldest 3-month period 累年最冷三个月(3)normal hottest month 累年最热月(3)normal hottest 3month period 累年最热三个月(3)normal three summer months 累年最热三个月(3)normal three winter months 累年最冷三个月(3)normals 累年值(3)nozzle outlet air suppluy 喷口送风(69)number concentration 计数浓度(36)number of degree-day of heating period 采暖期度日数(9)Ooctave 倍频程(97)1/3 octave 倍频程(97)octave band 倍频程(97)oil cooler 油冷却器(84)oill-fired unit heater 燃油热风器(30)one-and-two pipe combined heating system 单双管混合式采暖系统(21)one (single)-pipe circuit (cross-over) heating system 单管跨越式采暖系统(21)one(single)-pipe heating system 单管采暖系统(21)one(single)-pipe loop circuit heating system 水平单管采暖系统(21)one(single)-pipe seriesloop heating system 单管顺序式采暖系统(21)one-third octave band 倍频程(97)on-of control 双位调节(88)open loop control 开环控制(86)open return 开式回水(15)open shell and tube condenser 立式壳管式冷凝器(82)open tank 开式水箱(28)operating pressure 工作压力(27)operating range 作用半径(26)opposed multiblade damper 对开式多叶阀(52)organized air supply 有组织进风(33)organized exhaust 有组织排风(34)organized natural ventilation 有组织自然通风(37)outdoor air design conditions 室外空气计算参数(7)outdoor ctitcal air temperature for heating 采暖室外临界温度(9)outdoor design dry-bulb temperature for summer air conlitioning 夏季空气调节室外计算干球温度(8)outdoor design hourly temperature for summer air conditioning 夏季空气调节室外计算逐时温度(9)outdoor design mean daily temperature for summer air conditioning 夏季空气调节室外计算日平均温度(9)outdoor design relative humidityu for summer ventilation 夏季通风室外计算相对湿度(8)outdoor design relative humidity for winter air conditioning 冬季空气调节室外计算相对湿度(8)outdoor design temperature ture for calculated envelope in winter冬季围护结构室外计算温度(8)outdoor design temperature ture for heating 采暖室外计算温度(7)outdoor design temperature for summer ventilation 夏季通风室外计算温度(8)outdoor design temperature for winter air conditioning 冬季空气调节室外计算温度(8)outdoor design temperature for winter vemtilation 冬季通风室外计算温度(7)outdoor designwet-bulb temperature for summer air conditioning 夏季空气调节室外计算湿球温度(8)outdoor mean air temperature during heating period 采暖期室外平均温度(9)outdoor temperature(humidity) 室外温(湿)度(5)outlet air velocity 出口风速(70)out put variable 输出量(89)overall efficiency of separation 除尘效率(47)overall heat transmission coefficient 传热系数(16)overflow pipe 溢流管(23)overheat steam 过热蒸汽(14)overlapping averages 滑动平均(4)overshoot 超调量(88)Ppackaged air conditioner 整体式空气调节器(70)packaged heat pump 热泵式空气调节器(71)packed column 填料塔(58)packed tower 填料塔(58)panel heating 辐射采暖(12)parabolic flow character-istic 抛物线流量特性(90)parallel multiblade damperin 平行式多叶阀(53)parameter detection 参数检测(90)part 通风〕部件(52)partial enclosure 局部密闭罩(42)partial pressure of water vapo[u]r 水蒸汽分压力(6)particle 粒子(44)particle counter 粒子计数器(104)particle number concentration 计数浓度(36)particle size 粒径(44)particle size distribution 粒径分布(44)particulate 粒子(44)particulate collector 除尘器(56)particulates 大气尘(43)passage ventilating duct 通过式风管(52)penetration rate 穿透率(47)percentage of men,women and children 群集系数(62)percentage of possible sunshine 日照率(7)percentage of return air 回风百分比(68)perforated ceiling air supply 孔板送风(69)perforated plate tower 筛板塔(58)periodic dust dislodging 定期除灰(48)piece (通风〕部件(52)pipe fittings 管道配件(23)pipe radiator 光面管散热器(29)pipe section 管段(25)pipe coil 光面管放热器(29)pitot tube 皮托管(103)plate heat exchanger 板式换热器(73)plenum chamber 静压箱(74)plenum space 稳压层(70)plug 丝堵(24)plume 烟羽(50)plume rise height 烟羽抬升高度(50)PNC-curve[s] 噪声评价PNC曲线(97)pneumatic conveying 气力输送(46)pueumatic transport 气力输送(46)pneumatic valve 气动调节阀(95)pneumo-electrical convertor 气-电转换器(94)positioner 定位器(95)positive feedback 正反馈(86)powerroof ventilator 屋顶通风机(55)preferred noise criteria curve[s] 噪声评价PNC曲线(97)pressure drop 压力损失(26)pressure enthalpy chart 压焓图(77)pressure ga[u]ge 压力表(103)pressure of steam supply 供汽压力(14)pressure reducing valve 减压阀(31)pressure relief device 泄压装置(53)pressure relief valve 安全阀(31)pressure thermometer 压力式温度计(102)pressure volume chart 压容图(77)primary air fan-coil system 风机盘管加新风系统(64)primary air system 新风系统(64)primary retirn air 一次回风(68)process air conditioning 工艺性空气调节(59)program control 程序控制(91)proportional band 比例带(89)proportional control 比例调节(88)proportional-integral (PI)control 比例积分调节(88)proportional-integralderivative(PID)control 比例积分微分调节(88)protected(roof)monitor 避风天窗(39)psychrometric chart 声级计(104)pulvation action 干湿球温度表(102)push-pull hood 焓湿图(65)pulvation action 尘化作用(45)push-pull hood 吹吸式排风罩(42)Qquick open flow characteristic 快开流量特性(89)Rradiant heating 辐射采暖(12)radiant intensity 辐射强度(4)radiation intensity 辐射强度(4)radiator 散热器(29)radiator heating 散热器采暖(12)radiator heating system 散热器采暖系统(20)radiator valve 散热器调节阀(32)rating under air conditioning condition 空调工况制冷量(75)reactive muffler 抗性消声器(99)。

空调系统英语对照(AirconditioningsysteminEnglish)

空调系统英语对照(AirconditioningsysteminEnglish)

空调系统英语对照(Air conditioning system in English)房间空调器 room air conditioner单元式空调机 unitary air conditioner窗式空调机 window type air conditioner分体式空调器 split type air conditioner室内机 indoor unit室外机 outdoor unit蒸发器 evaporator冷凝器 condenser毛细管 capillary tube压缩机 compressor往复式压缩机 reciprocating compressor(回转) 转子式压缩机 rotary compressor涡旋式压缩机 scroll compressor气缸 cylinder吸气阀 suction valve排气阀 discharge valve理论排量 theoretical displacement实除排量 actual displacement热交换器 heat exchangeru形管 u shape tube吊顶式 ceiling suspended吸顶式 cassettes ceiling (ceiling concealed) 壁挂式 wall mounted落地式 floor standing光管 plain copper pipe内螺纹管 inner groove copper pipe翅片管 finned tube四通换向阀 four way reversing valve单向阀 check valve轴流风机 axial flow fan (propeller fan)离心风机 centrifugal fan (sirocco fan)贯流风机 cross flow fan (1inefrow fan)截止阀 cut-off valve (ball valve)过滤器 strainer底盘 (底板) chassis (lower panel)安装板 installation sheet前 (后) 面板 front (rear) panel侧板 side plate (side panel)边板 than plate (panel)风扇电机 fan engine电机支架 engine support中间隔板 mid.isolation sheet (separated support plate) 网罩 protection grill nets扫风电机 swing engine (louver engine)步进电机 step motor (habit) engine进风格栅 air intake grill步进电机座 habit crank继电器引线 relay lead电器安装板 electrical supporting plate 盖板 cover plate (top plate)电容 capacitor电容夹 capacitor clamp胶圈 o - gasket管路系统 tubing system排气管 discharge pipe吸气管 suction pipe电气原理图 electrical principle diagram 电气接线图 electrical wring diagram线路图 circuit diagram保温管 thermal insulation pipe连接管堵头 connection pipe cap电器安装盒电气箱汽液分离器液气分离器接线板接线端子交流接触器交流接触器贮液器储液器波纹软管波纹管四芯(六芯)4控制线信号电缆(6)芯电热管加热元件扫风叶片支架百叶窗的支持左右端盖边箱(L,R)电源线电源线控制器控制器红外遥控器远程控制器继电器继电器主令开关主开关温控器恒温器螺钉螺钉螺栓螺栓螺母螺母垫圈垫片排水管排水管油分离器油分离器插片镶块插孔插入螺栓电机保护器电机保护器保险丝保险丝PTC发热元件PTC电加热器变压器变压器控制面膜控制面板脚轮蓖麻固定螺丝固定螺丝底板底板水位开关水位开关触摸开关触摸开关热断路热断路器限温器温度限制器电脑芯片IC集成电路集成电路可控硅可控硅蜂鸣器蜂鸣器插座插座插头插头过滤网空气过滤器过滤栅过滤格栅蜗壳螺旋桨住房水箱水箱水箱盖油箱盖上隔板内上盖下隔板下内罩上卡板顶盖下卡板底盖扫风叶片摆动百叶窗支撑条支撑杆导风叶片下百叶窗出风格栅前格栅出水管排水管出水槽出口水模具模具灯箱灯箱机壳体感温包temp.sensor 电磁阀电磁阀电磁线圈电磁线圈压缩机过载保护热保护器高压保护高压开关低压保护低压开关吊顶机风扇蜗壳套管集水盘排水盘安装螺钉盖螺旋盖(螺旋盖)壁挂机安装板壁架电机固定件电机支架电机固定圈橡胶支座风叶护网风扇罩室内电机风扇电机(IU)室外电机风扇电机(欧)四通阀四通阀步进/同步电机百叶窗电机电源互联线互联线(电源)信号线互联线(信号)拨动开关摆动开关电机电容风扇电机运行电容器(IU)压机电容压缩机运行电容器电机保护器风扇电机热保护压机保护器保护压缩机变压器保险管热连接在变压器电抗器反应堆电源模块IPM整流桥整流桥光藕光耦控制器保险管融合控制器压敏电阻压敏电阻电机继电器接力风机马达压机继电器继电器压缩机滤波电容X2 X2电容滤波器电容Y2 Y2电容器温度计温度计水银温度计水银温度计电阻温度计电阻温度计热敏电阻热敏电阻热电偶热电偶热电偶温度计热电偶温度计量热计量热计表压表压绝对压力绝对压力压力计压力表真空真空真空计真空计真空压力计复合表干球温度计干球温度计温球温度计湿球温度计湿度计湿度计干湿球温度计干湿球温度计流量计流量计喷嘴流量喷嘴质量流量计质量流量计温度传感器温度传感器湿度传感器湿度传感器风速仪风速计机械风速仪机械风速仪数字风速仪数字风速仪热线风速仪热线风速仪声级计声级计工具工具测量放大器测量放大器电容传声器电容话筒绝缘电阻表绝缘电阻表耐压测试仪可靠性高电压表接地电阻接地电阻测试台测试站泄漏电流测试装置泄漏电流测试设备直流电阻电桥电桥直流电阻炎炎灼热丝试验装置测试设备用废漏电起痕试验装置漏电流测试设备球压装置球压装置热平衡室或平衡热平衡环境型房间量热计焓差室湿空气焓差法或量热计测量不确定度测量不确定度扩口器管出口膨胀弯管器弯管机卤素检漏仪卤素检漏仪电子检漏仪电子检漏仪板子扳手冲击钻电动旋转锤风机盘管风机盘管阿虎:空气处理单元(空气处理机)空气处理机组故障:新风处理单元新风机组供热通风与空气调节暖通:暖通空调DCC:干盘管(干式盘管)干盘管FFU风机过滤单元:风机过滤单元茅:新风空调箱新风机组计划洁净空调系统中外气空调箱跨栏,完全是新风的空调箱阿虎:空气处理单元空气单元一般型空调箱跨栏高效:高效颗粒空气高效空气过滤器RAC:循环组合空调单元再循环空气柜单元计划C / R:洁净室无尘室清洁房间ULPA超低穿透空气过滤器:超高空气效过滤器如:风淋室空气簇射铅:传递箱传递箱答:净化工作台洁净工作台采访:泄压风门救济阻尼器CH.:制冷机CD:冷凝水管C.T.:冷却塔CAV:新风量控制箱电炉:排风机EAD:排风管EAG:排风口EAL:排风百叶FAG:新风口FAL:新风百叶前言:补风机空服员:新风时尚:新风管:防火阀F.D.慧聪网:加热盘管FP:风机盘管胡:热交换器n.r.d.:风管止回阀解析:经过处理的新风PDA:新风管(经过处理的新风)保罗:新风机(带处理功能)朋友:新风百叶R.A.:回风拉德:回风管抹布:回风口制冷剂形容词.制冷的制冷剂空气源热泵(ASHP)airsourceheatpump。

暖通空调专业毕业设计外文翻译

暖通空调专业毕业设计外文翻译

英文翻译Chilled Water Systems[1]Chilled water systems were used in less than 4% of commercial buildings in the U.S. in 1995. However, because chillers are usually installed in larger buildings, chillers cooled over 28% of the U.S. commercial building floor space that same year (DOE, 1998). Five types of chillers are commonly applied to commercial buildings: reciprocating, screw, scroll, centrifugal, and absorption. The first four utilize the vapor compression cycle to produce chilled water. They differ primarily in the type of compressor used. Absorption chillers utilize thermal energy (typically steam or combustion source) in an absorption cycle with either an ammonia-water or water-lithium bromide solution to produce chilled water.Overall SystemFigure 4.2.2 shows a simple representation of a dual chiller application with all the major auxiliary equipment. An estimated 86% of chillers are applied in multiple chiller arrangements like that shown in the figure (Bitondo and Tozzi, 1999). In chilled water systems, return water from the building is circulated through each chiller evaporator where it is cooled to an acceptable temperature (typically 4 to 7°C) (39 to 45°F). The chilled water is then distributed to water-to-air heat exchangers spread throughout the facility. In these heat exchangers, air is cooled and dehumidified by the cold water. During the process, the chilled water increases in temperature and must be returned to the chiller(s).The chillers shown in Figure 4.2.2 are water-cooled chillers. Water is circulated through the condenser of each chiller where it absorbs heat energy rejected from the high pressure refrigerant. The water is then pumped to a cooling tower where the water is cooled through an evaporation process. Cooling towers are described in a later section. Chillers can also be air cooled. In this configuration, the condenserwould be a refrigerant-to-air heat exchanger with air absorbing the heat energy rejected by the high pressure refrigerant.Chillers nominally range in capacities from 30 to 18,000 kW (8 to 5100 ton). Most chillers sold in the U.S. are electric and utilize vapor compression refrigeration to produce chilled water. Compressors for these systems are either reciprocating, screw, scroll, or centrifugal in design. A small number of centrifugal chillers are sold that use either an internal combustion engine or steam drive instead of an electric motor to drive the compressor.[1]节选自James B. Bradford et al. “HVAC Equipment and Systems”.Handbook of Heating, Ventilation, and Air-Conditioning.Ed. Jan F. Kreider.Boca Raton, CRC Press LLC. 2001FIGURE 4.2.2 A dual chiller application with major auxiliary systems (courtesy of Carrier Corporation).The type of chiller used in a building depends on the application. For large office buildings or in chiller plants serving multiple buildings, centrifugal compressors are often used. In applications under 1000 kW (280 tons) cooling capacities, reciprocating or screw chillers may be more appropriate. In smaller applications, below 100 kW (30 tons), reciprocating or scroll chillers are typically used.Vapor Compression ChillersTable 4.2.5 shows the nominal capacity ranges for the four types of electrically driven vapor compression chillers. Each chiller derives its name from the type of compressor used in the chiller. The systems range in capacities from the smallest scroll (30 kW; 8 tons) to the largest centrifugal (18,000 kW; 5000 tons).Chillers can utilize either an HCFC (R-22 andR-123) or HFC (R-134a) refrigerant. The steady state efficiency of chillers is often stated as a ratio of the power input (in kW) to the chilling capacity (in tons). A capacity rating of one ton is equal to 3.52 kW or 12,000 btu/h. With this measure of efficiency, the smaller number is better. As seen in Table 4.2.5, centrifugal chillers are the most efficient; whereas, reciprocating chillers have the worst efficiency of the four types. The efficiency numbers provided in the table are the steady state full-load efficiency determined in accordance to ASHRAE Standard 30 (ASHRAE, 1995). These efficiency numbers do not include the auxiliary equipment, such as pumps and cooling tower fans that can add from 0.06 to 0.31 kW/ton to the numbers shown (Smit et al., 1996).Chillers run at part load capacity most of the time. Only during the highest thermal loadsin the building will a chiller operate near its rated capacity. As a consequence, it is important to know how the efficiency of the chiller varies with part load capacity. Figure 4.2.3 shows a representative data for the efficiency (in kW/ton) as a function of percentage full load capacity for a reciprocating, screw, and scroll chiller plus a centrifugal chiller with inlet vane control and one with variable frequency drive (VFD) for the compressor. The reciprocating chiller increases in efficiency as it operates at a smaller percentage of full load. In contrast, the efficiency of a centrifugal with inlet vane control is relatively constant until theload falls to about 60% of its rated capacity and its kW/ton increases to almost twice its fully loaded value.FIGURE 4.2.3 Chiller efficiency as a function of percentage of full load capacity.In 1998, the Air Conditioning and Refrigeration Institute (ARI) developed a new standard that incorporates into their ratings part load performance of chillers (ARI 1998c). Part load efficiency is expressed by a single number called the integrated part load value (IPLV). The IPLV takes data similar to that in Figure 4.2.3 and weights it at the 25%, 50%,75%, and 100% loads to produce a single integrated efficiency number. The weighting factors at these loads are 0.12, 0.45, 0.42, and 0.01, respectively. The equation to determine IPLV is:Most of the IPLV is determined by the efficiency at the 50% and 75% part load values. Manufacturers will provide, on request, IPLVs as well as part load efficiencies such as those shown in Figure 4.2.3.FIGURE 4.2.4 Volume-pressure relationships for a reciprocating compressor.The four compressors used in vapor compression chillers are each briefly described below. While centrifugal and screw compressors are primarily used in chiller applications, reciprocating and scroll compressors are also used in smaller unitary packaged air conditioners and heat pumps.Reciprocating CompressorsThe reciprocating compressor is a positive displacement compressor. On the intake stroke of the piston, a fixed amount of gas is pulled into the cylinder. On the compressionstroke, the gas is compressed until the discharge valve opens. The quantity of gas compressed on each stroke is equal to the displacement of the cylinder. Compressors used in chillers have multiple cylinders, depending on the capacity of the compressor. Reciprocating compressors use refrigerants with low specific volumes and relatively high pressures. Most reciprocating chillers used in building applications currently employ R-22.Modern high-speed reciprocating compressors are generally limited to a pressure ratio of approximately nine. The reciprocating compressor is basically a constant-volumevariable-head machine. It handles variousdischarge pressures with relatively small changes in inlet-volume flow rate as shown by the heavy line (labeled 16 cylinders) in Figure 4.2.4. Condenser operation in many chillers is related to ambient conditions, for example, through cooling towers, so that on cooler days the condenser pressure can be reduced. When the air conditioning load is lowered, less refrigerant circulation is required. The resulting load characteristic is represented by the solid line that runs from the upper right to lower left of Figure 4.2.4.The compressor must be capable of matching the pressure and flow requirements imposed by the system. The reciprocating compressor matches the imposed discharge pressure at any level up to its limiting pressure ratio. Varying capacity requirements can be met by providing devices that unloadindividual or multiple cylinders. This unloading is accomplished by blocking the suction or discharge valves that open either manually or automatically. Capacity can also be controlled through the use of variable speed or multi-speed motors. When capacity control is implemented on a compressor, other factors at part-load conditions need to considered, such as (a) effect on compressor vibration and sound when unloaders are used, (b) the need for good oil return because of lower refrigerant velocities, and (c) proper functioning of expansion devices at the lower capacities.With most reciprocating compressors, oil is pumped into the refrigeration system from the compressor during normal operation. Systems must be designed carefully to return oil to the compressor crankcase to provide for continuous lubrication and also to avoid contaminating heat-exchanger surfaces.Reciprocating compressors usually are arranged to start unloaded so that normal torque motors are adequate for starting. When gas engines are used for reciprocating compressor drives, careful matching of the torque requirements of the compressor and engine must be considered.FIGURE 4.2.5 Illustration of a twin-screw compressor design (courtesy of CarrierCorporation).Screw CompressorsScrew compressors, first introduced in 1958 (Thevenot, 1979), are positive displacement compressors. They are available in the capacity ranges that overlap with reciprocating compressors and small centrifugal compressors. Both twin-screw and single-screw compressors are used in chillers. The twin-screw compressor is also called the helical rotary compressor. Figure 4.2.5 shows a cutaway of a twin-screw compressor design. There are two main rotors (screws). One is designated male (4 in the figure) and the other female (6 in the figure).The compression process is accomplished by reducing the volume of the refrigerant with the rotary motion of screws. At the low pressure side of the compressor, a void is created when the rotors begin to unmesh. Low pressure gas is drawn into the void between the rotors. As the rotors continue to turn, the gas is progressively compressed as it moves toward the discharge port. Once reaching a predetermined volume ratio, the discharge port is uncovered and the gas is discharged into the high pressure side of the system. At a rotation speed of 3600 rpm, a screw compressor has over 14,000 discharges per minute (ASHRAE, 1996).Fixed suction and discharge ports are used with screw compressors instead of valves, as used in reciprocating compressors. These set the built-in volume ratio — the ratio of the volume of fluid space in the meshing rotors at the beginning of the compression process to the volume in the rotors as the discharge port is first exposed. Associated with the built-in volume ratio is a pressure ratio that depends on the properties of the refrigerant being compressed. Screw compressors have the capability to operate at pressure ratios of above 20:1 (ASHRAE, 1996). Peak efficiency is obtained if the discharge pressure imposed by the system matchesthe pressure developed by the rotors when the discharge port is exposed. If the interlobe pressure in the screws is greater or less than discharge pressure, energy losses occur but no harm is done to the compressor.Capacity modulation is accomplished by slide valves that provide a variable suction bypass or delayed suction port closing, reducing the volume of refrigerant compressed. Continuously variable capacity control is most common, but stepped capacity control is offered in some manufacturers’ machines. Variable discharge porting is available on some machines to allow control of the built-in volume ratio during operation.Oil is used in screw compressors to seal the extensive clearance spaces between the rotors, to cool the machines, to provide lubrication, and to serve as hydraulic fluid for the capacity controls. An oil separator is required for the compressor discharge flow to remove the oil from the high-pressure refrigerant so that performance of system heat exchangers will not be penalized and the oil can be returned for reinjection in the compressor.Screw compressors can be direct driven at two-pole motor speeds (50 or 60 Hz). Their rotary motion makes these machines smooth running and quiet. Reliability is high when the machines are applied properly. Screw compressors are compact so they can be changed out readily for replacement or maintenance. The efficiency of the best screw compressors matches or exceeds that of the best reciprocating compressors at full load. High isentropic and volumetric efficiencies can be achieved with screw compressors because there are no suction or discharge valves and small clearance volumes. Screw compressors for building applications generally use either R-134a or R-22.译文冷水机组1995年,在美国,冷水机组应用在至少4%的商用建筑中。

暖通工程专专业英语词汇

暖通专业英语词汇暖通Heating ventilation and air conditioning空调平面图 air handling layoutMU1~3新风系统图MU1~3 make-up air system diagramAHU-1净化空调系统图Air purification & air handling system diagram, AHU-1空调通风平剖面图ventilation & air conditioning plan/section吊顶空调平剖面图air condition ceiling plan section吊顶通风和采暖,空调用水管平面图ventilation and heating piping plan above ceiling室内采暖空调平面图room heating and air condition plan吊顶一下净化空调平面图air purification & air conditioning above ceiling拉丝区+14米送风平面图air supply plan at level of +14.00, drawing areaS-1,2 送风系统图S-1,2 air supply system diagram室内回风口平面图indoor air return grill plan洁净室回风平面图air return grill plan in clean rooms空调用冷热水管平面图A.C water piping plan空调供热流程图A.C heating supply system diagram屋顶排风平面图roof exhaust plan排风系统图roof exhaust system送风系统图air supply system diagramAHU-1 水系统图AHU-1 water piping system diagram净化空调系统控制原理图air purification & air conditioning system control priciple diagram AHU-15 变风量空调系统图AHU-15 VAV system diagram冷冻水,冷却水管道系统图CHW and CW piping system diagram热水采暖系统图hot water heating system diagram空调机房平面图air handling room plan最冷月或最热月平均温度temperature coldest month or hottest month (mean)年,月,平均温度,最高,最低temperature, yearly, monthly, mean, highest, lowest最高或最低绝对温度absolute temperature, highest or lowest湿球温度wet bulb temperature干球温度dry bulb temperature采暖区region with heating provision不采暖区region without heating provision采暖室外计算温度calculating outdoor temperature for heating通风冬季室外计算温度calculating outdoor temperature for ventilation winter 绝对大气压absolute atmospheric pressure蒸发量 volume of vaporization相对湿度 relative humidity采暖 heating热媒 heating medium供暖管道 heating system供暖总管 heating pipe集中供暖 central heating供暖总站 central heating plant单管供暖系统 one-pipe heating system单管循环系统 one-pipe circuit system单管上行下给供暖系统one-pipe drop heating system单管热水供暖系统one-pipe hot water heating system单管强制循环系统one-pipe forced system蒸汽供暖 steam heating供应方式 means of supply蒸汽压力 steam pressure蒸汽密度 vapor density蒸汽压力势vapor pressure potential供汽装置steam supply installation蒸汽系统 vapor system降压站 reduction station蒸汽容量 steam capacity蒸汽消耗量 steam consumption蒸汽盘管供暖 steam coil heated蒸汽盘管 steam coil供热盘管 heating coil散热盘管 panel coil排蒸汽管 steam discharge pipe蒸汽回管 steam discharge pipe冷凝水管 condensing pipe冷凝回水管 condensing return pipe蒸汽散热器 steam radiator隔汽具,汽层 vapor barrier蒸汽分离器 steam separator蒸汽调整阀 steam regulating蒸汽减压阀 steam reducing valve蒸汽暖风机 steam unit ventilator供暖蒸汽锅炉 steam-heating boiler电热供暖 electrical heater电热器 electrical heater管式电热器 tubular electrical heater电热辐射器 electrical radiator电热对流器 electrical convector热风供暖 warm air-heating热风器 hot air generator热风烘干 hot air drying强制对流加热器forced convection heater空气加热器 air heater热风管道 warm-air heating压力供气 forced air supply压力环流 forced circulation辐射式供热系统embedded panel system双管供热系统 double pipe heating上分式双管系统double pipe dropping system顶棚板面供暖ceiling panel heating顶棚供暖盘 ceiling coil片式供暖盘 finned type heating coil 散热器 radiator墙挂式散热器 wall radiator单柱散热器 one column radiator板式散热器 plate radiator圆翼形散热器 circular wing radiator长翼形散热器 long wing radiator蜂窝式散热器 honeycomb radiator暖气管柱 column of radiator单个散热器 unit radiator闭式散热器 closed radiator悬挂式单个散热器suspended type unit radiator管式加热器 tubular heater波纹式散热片 corrugated radiator换热器 heat exchange散热器翘板 fin of radiator散热器阻气板 radiator air baffle散热器外罩 enclosure of radiators散热器阀 radiator valve穿墙管 wall pipe穿墙套管 wall sleeve导热性 thermal conductivity导热系数thermal coefficient of conduction供热面 heating surface散热面 heat delivery surface热气消耗 heat consumption热对流 thermal convection热消耗 heat dissipation热扩散 thermal convection热膨胀 thermal diffusivity热效率 thermal efficiency热效应 heat effect热风循环 heated air circulation辐射热吸收系数coefficient of absorption of radiant heat热膨胀系数 coefficient of expansion by heat 通风 ventilation通风设施 ventilation installation自然通风natural draft ventilation人工通风 artificial ventilation抽气通风 ventilation by extraction压力通风 forced ventilation通风系统 ventilation system鼓风系统 blower system通风管 vent pipe圆形通风管 circular vent pipe矩形通风管 rectangular vent pipe通风干管 main vent通风横管 vent heater通风立管 vent stack通风道 air duct通风井 vent shaft扁长通风孔 ventilation slot通风窗 ventilation window通风格子窗 ventilation grill通风百叶 ventilation louver气窗 ventilation casement屋顶通风 roof ventilation屋顶风机 roof fan顶棚风扇 ceiling fan换气风扇 scavenger fan通风压差 ventilation column通风冒 ventilation cowl通风扇 ventilation fan通风器 ventilator卫生间通风器 toilet ventilator通风机 blower轴流式通风机 axial flow fan玻璃钢屋顶离心通风机reinforced fiberglass centrifugal roof fan 空气缓冲器 air buffer鼓风机 air blower鼓风喷射 air blasting排气通风机 air exhaust ventilator吸风机 suction ventilator排风机 exhaust fan机械排风 mechanical exhaust局部排风 local exhaust事故排风 emergency exhaust空气室 air chamber空气体积 air volume空气流量 air steam通风面积 ventilation area压力气流 forced draft换气次数 air change外形尺寸 overall dimension风量 air volume热量 heat volume余压 surplus volume水量 water quantity水阻力 water resistance风压 air pressure压力露点 pressure dew point状态点 state point工况条件 operation condition制冷剂 refrigerant制冷量 refrigerating capacity制热量 heating capacity加湿量 humidifying capacity上送风 top supply下送风 bottom supply正压渗风量 exfiltration进水温度 inlet temperature出水温度 outlet temperature流量 flow污垢系数 filthy factor水阻系数 water pressure factor传热系数 transmission factor空气调节 air-conditioningair handling单体式空调器 unit air conditioner分体式空调器 separate air conditioner窗式空调器window type air conditioner卧式空调器 horizontal air conditioner立式空调器 floor air conditioner组装式空调器 packaged air conditioner风冷分体式空调器air-cooled split type air conditioner变风量空气处理机组VAV air handling units风机盘管空调器fan coil type air conditioner墙挂式空调器wall-mounted air conditioner立式明装 floor exposed立式暗装 floor concealed卧式明装 horizontal exposed吊顶暗装 floor concealed矮形明装 lowboy exposed矮形暗装 lowboy concealed天花嵌入式 cassette type设有空气调节的房屋air-conditioned building空气冷却 air cooling蒸发空气冷却air cooling by evaporation离心式制冷机组centrifugal refrigerating units]冷风机 air cooler空气冷凝器 air condenser蒸发式冷凝器 evaporating condenser水冷冷凝器water cooling condenser空气冷却冷凝器air cooled condenser冷凝水盘condense water drip plate冷凝水孔 condensed water hole冷凝水排出口 condensed water drain压缩制冷在这块也可以休息得不冷温度又高了点compression refrigerating旋转式压缩机 rotary compressor送风量 supply capacity管子冷却器 pipe cooler管子冷却面 pipe cooling surface冷却水量 cooling capacity空气加湿器 air humidifier电极加湿器 electrode humidifier干蒸汽加湿器 dry steam humidifier离心加湿器 centrifugal humidifier去湿 dehumidificating水冷系统 water cooling system喷雾嘴 air cup喷雾 water sprinkling冷媒 cooling medium水帘 water sheet水幕 water curtain水幕喷嘴 water spray nozzle空气洗涤 air washing空气粗滤器 air strainer空气洗涤器 air washer空调机组 air handling unit空气站 air bottle气阀 air cock气闸 air brake风机盘管 fan coil热泵 heat pump柔性通风管道flexible ventilation pipe面板 surface plate泄水口 drain hole出风口 air outlet进风口 air inlet气管 gas line混合段 mixing风机段 fan预加热段 preheat加热段 heating表冷器 surface cooling表冷器挡水段surface cooling water stop中间段 middle section蒸汽加热段 steam heating电加热段 electric heating加湿段 humidifying水淋段 sprinkling送风机段 air supply中效袋式过虑段medium bag filter消声段 sound absorption二次回风 secondary return检修段 maintenance挡水板 water buffer plate防尘构造 dust-tight construction。

暖通空调专业英语

暖通空调专业英语暖通空调术语abatement 减除[少];降低,消除abatement of smoke 消减烟雾,除烟abatjour 斜片百叶窗,天窗,亮窗;遮阳abat--vent 固定百叶窗;通风帽abbertite 沥青abbreviation 缩写,略语,省略aberration 象[偏,误]差;变形ability 能力,性能ablation 烧蚀;消融;剥落ablaze 着火ablution 吹[清]除,清洗,洗净abnormal 不正常的,不规则的,变态的abrade 磨损[光],清除abrasion 磨损abrasion--resistant 耐磨的abrasive 磨料;磨损的,研磨的abrasiveness 磨损性,磨耗abrupt 急剧的,突变的abrupt change of cross--section 截面突变abrupt contraction 突然缩小abrupt expansion 突然扩大[膨胀] abruption 断裂abscess (金属中的)砂眼,气孔,夹渣内孔abscissa 横坐标absolute 绝对的absolute altitude 标高,绝对高度,海拔absolute atmosphere 绝对大气压absolute black body 绝对黑体absolute filter 高效过滤器,绝对过滤器[具有99.9%以上效率并能过滤直径达0.01(微米)的颗粒尘埃的空气过滤器]absolute heating effect 绝对热效应;绝对供暖效果absolute humidity 绝对湿度[在水蒸气和干燥空气的混合物中,单位容积内所含水汽的质量] absolute pressure 绝对压力absolute temperature 绝对温度absolute vacuum 绝对真空absolute velocity 绝对速度absolute viscosity 绝对粘度absolute zero 绝对零度[理论上,分子热运动完全停止时的温度] absorb 吸收absorbability 吸收性absorbable 可吸收性absorbate 吸收物[被吸收剂吸收的物质]absorbent 吸收剂;有吸收能力的absorbent carbon 活性炭absorbent charcoal 活性炭,吸收性炭absorbent concentration 吸收浓度absorbent equipment 吸收装置absorbent filter 吸收性过滤器absorbent pressure 吸收压力absorbent process 吸收过程absorbent temperature 吸收温度absorber 吸收器[吸收式制冷机中的一部分,制冷剂蒸气在其中被吸收];减振器,阻尼器absorbility 吸收能力absorbing tower 吸收塔absorbing--type gas air filter 吸附式除气用空气过滤器absorptance 吸收系数[一个表面所吸收的辐射能流速率与该表面所接受的能流速率之比] absorption 吸收;吸收作用absorption brine chilling unit 吸收式盐水冷却设备absorption capacity 吸收容量absorption coefficient 吸收系数absorption cooling 吸收式供冷absorption efficiency 吸收效率absorption factor 吸收系数[见absorptance]absorption heat 吸收热absorption hygrometer 吸收湿度计[根据吸湿材料所吸收的水蒸气量来测定大气湿度的仪器] absorption machine 吸收式机absorption of heat 吸热absorption of shock 缓冲,减absorption refrigerating machine 吸收式制冷机absorption refrigerating plant 吸收式制冷装置absorption refrigeration 吸收式制冷absorption refrigeration system 吸收式制冷系统absorption refrigerator 吸收式冰箱absorption silencer 吸收式消音器absorption system 吸收式系统[制冷剂的蒸汽为液体或固体所吸收,然后加热析出的制冷系统] absorption--type refrigerating unit 吸收式制冷机组absorptive 吸收性的absorptive drying 吸收式干燥法absorptivity 吸收率,吸收能力,吸收系数abstract 摘要,小计;萃取[提出]物;提出,抽出,除去;概括abstract heat 散热abstraction 抽出,提取abutment 支座,支点;接合点academy 学院,研究院,学会,协会accelerate 加速,促进accelerant 加速剂,促进剂accelerated circulation 加速循环acceleration 加速度,加速作用acceleration due to gravity 重力加速度acceleration of falling body 落体加速度accelerator 加速器accelerometer 加速计acceptable 合格,容许的,验收的acceptable standard 通用标准acceptable test 验收试验acceptance 验收,认可acceptance check 验收检查acceptance of materials 材料验收acceptance of work 工程验收access 通道;[出]入口,进入;接近access cover 检修盖access door 检查门,人孔access eye 检查孔hatch 检查门,人孔accessible 能进入的accessible canal 可通行通道accessible compressor 易卸压缩机,现场用压缩机accessible hermetic compressor unit 半封闭式压缩机组accessible trench 可通行地沟access of air 空气通路;空气流入accessories 附属设备accessory 附[备]件;附属的,附加的accident (偶然)事故,意外;破坏accidental 偶然的,意外的;附带的,随机的accidental admission of vapour 蒸汽漏入accidental maintenance 事故维修accidental prevention 安全措施acclimatization 气候适应,驯化作用[使动物或植物适应新的气候] accommodate 适应;容纳;调节;供应accommodation coefficient 适应系数accordion door 折门,折叠门account 计算书;说明;核算accountability 可计量性accumulate 积聚,堆积accumulate timber 层压材料,胶合板[2~10mm 厚的几张材料用高频加热器粘合起来的一种板材]accumulation 积聚,累[积]加;存储accumulation of cold 蓄冷accumulation of heat 蓄热accumulator 蓄热[能]器;蓄电池;贮液器,低压平衡筒[装在制冷装置低压侧的容器,用以供给满液式系统循环用的液体,或用来减低脉动]accuracy 精[精密,精确]度,准确度;准确;准确性accuracy of adjustment 调节精度accuracy of instrument 仪表精度accuracy of manufacture 制造精度accuracy of measurement 测量精度accurate control 精确控制acetic acid 醋酸acetone 丙酮acetylene 乙炔acetylene apparatus 乙炔气焊设备acetylene burner 乙炔燃烧器acetylene gas 乙炔气acetylene gas generator 乙炔发生器acetylene pipe 乙炔管acetylene station 乙炔站acetylene welding 乙炔焊,气焊acid 酸acid cleaning 酸洗acid degree 酸度acidification 酸化,氧化acidimeter 酸液比重计,酸度计acidity 酸性acidless 无酸的acidproof 防酸;耐[防]酸的acidproof material 耐酸材料acidresistant 耐酸的,抗酸的acidresisting 耐酸的acidresisting concrete 耐酸混凝土acid smuts 酸性烟尘acid test 酸性试验acme 峰,极点,最高点acoumeter = acousimeter 测听计acoustic(al) 声学的,听觉的acoustic absorptivity 吸声能力,吸声率[系数]acoustical absorbent 吸声材料acoustical attenuation 声衰减acoustical baffle 声障板acoustical behavior 声学性能acoustical conductivity 传声性,声导率acoustical damper 消声器acoustical material 传声[声学]材料acoustical thermometer 声学温度计[一种通过测量在某种气体中的声速来计温的温度计,用于测深低温]acoustical treatment 音响处理,防声措施acoustic board 隔音板,吸声板acoustic celotex board 隔音[甘蔗]板,隔音纤维板acoustic -- celotextile 甘蔗纤维吸声板acoustic filter 消声器,滤声器acoustic frequency 声频[30Hz(赫)--20Hz(千赫)] acoustic hangovers 声迟滞acoustic impedance 声阻抗acoustic insulation 隔声acoustic isolation 隔声acoustic lining 隔音衬板acoustic meter 比声计acoustic noise 噪声acoustic paint 吸声油漆,吸声涂料acoustic pick--up 拾声器,唱头acoustic plaster 吸声灰浆acoustic pressure level 声压级acoustic radiation pressure 声压,声辐射压acoustic reflectivity 声反射性;声反射比[系数] acoustic resistance 声阻力acoustic resonance 声共鸣acoustics(复) 声学,音响效果acoustic transmissivity 声透射性,声透射比[系数] acoustic velocity 声速acrylate resin enamel paint 丙烯酸合成树脂漆acrylic plastics(复) 丙烯酸塑料act 条例,法令,决议acting head 作用压头,有效水头actinic glass 光化玻璃actinograph 辐射仪actinometer 曝光计action 作用,影响,效应;作用力;操作action of blast 鼓风效应activated 活性的activated alumina 活性矾土,活性铝土,活性氧化铝[一种容易吸附水分的氧化铝] activated bauxite 活性矾土activated carbon 活性炭[能吸附挥发物的多孔性炭]activated charcoal 活性炭activation 活化,激活activator 活化剂,提高灵敏度装置active 活性的,主动的,灵敏的;放射性的active fuel bed 燃料燃烧层active furnace area 炉底有效面积active grate area 炉排有效面积active solar heating 主动式太阳能供暖activity 活性的;放射性;功率actual 真实的,有效的,现行的actual budget 决算actual cycle 实际循环actual displacement 实际排量[压缩机在单位时间内,按进气条件所排出气体的实际体积] actual gas 实际气体actual internal area 流通截面actuate 起动actuating 操纵的actuating cam 推动凸轮actuating device 调节[传动]装置actuating mechanism 执行机构actuating medium 工质actuating motor 起动[伺服]电动机actuating pressure 工作压力actuating signal 动作信号actuating system 传动系统actuating unit 驱动机组,动力机构,动力传动装置actuation 开[启、传]动actuation time (继电器)动作时间actuator 调节器,传动装置,(调节器的)执行机构,启动器actuator governor 调速控制器acyclic 非周期性的;单级的adapt 使适应,修改adaptability 适应性,灵活性,适应能力adaptation 适应;配合;修改adapter 附件;接合器,转接器adapter connector 接头,接头adapter glass 玻璃接头分线盒adapter junction box 分线盒adapter kit 成套附件adapter sleeve 紧固套,连接套管adaptive 适合的,适用的adaptive control system 自适应控制系统adaptor = adapter 附件;接合器,接头addendum 附录adder 加法器addition 增加,附加;加入;加法;扩建部分additional 附加的additional equipment 辅助设备,附加设备additive 添加剂;添加的,附加的adequate 适当的,充分的adhere 粘着,附着,连接adherence 粘着,附着adherent 粘附的,附着的adhesion 粘附力,粘着力,附着力,附着作用adhesive 胶粘剂,胶粘的adhesive bitumen primer 冷底子油adhesive force 粘附力adhesive strength 胶粘强度adiabat 绝热线, 等焓线adiabatic 绝热的,等焓的adiabatic calorimeter 绝热热量计adiabatic change 绝热变化adiabatic combustion 绝热燃烧adiabatic compression 绝热压缩adiabatic condensation 绝热冷凝adiabatic condition 绝热状态adiabatic constant 绝热常数adiabatic cooling line 绝热冷却曲线adiabatic curve 绝热曲线adiabatic demagnetization 绝热去磁adiabatic efficiency 指示[绝热]效率[压缩机压缩单位质量制冷剂所消耗的功与一理想压缩机压缩同一质量的制冷剂的功之比] adiabatic exchanger 绝热交换器adiabatic expansion 绝热膨胀adiabatic exponent 绝热指数adiabatic humidifying 绝热加湿adiabatic indicated efficiency 绝热指示效率adiabatic mixing 绝热混合adiabatic process 绝热过程adiabatic saturation 绝热饱和adiabatic stabilization 绝热稳定adiabatic system 绝热系统adiabatic temperature 绝热温度adjacent 邻接的,交界的adjust 调节,校[调,修]正adjust a bearing 调整轴承adjustability 可调性adjustable 可调节的adjustable blade 可调叶片adjustable bracket 可调[活动]托架adjustable capillary valve 可调毛细管阀adjustable contact 可调触点adjustable damper 可调风门adjustable guide vane 可调导叶adjustable head t-square 活头丁字尺adjustable instrument mounting 仪表的可调节支架,仪表调节装置adjustable louvers 活动百页窗adjustable pipe tongs 活动管钳adjustable spanner 活动扳手adjustable wrench 活动扳手adjuster 调整器,调节装置,调整工,装配工adjusting 调节的,校正的adjusting bolt 调整螺栓adjusting damper 调节风门adjusting device 调整装置adjusting instrument 调节器adjusting key 调整键adjusting nut 调整螺母adjusting screw 调整螺钉,调整[校正]螺丝adjusting spring 调整弹簧adjustment 调整,校正adjustment curve 校正曲线adjustment factor 修正系数adjust to zero 调整到零位adjutage 喷射管,放水管admeasurement 测量,度量,尺寸administrate=administer 管理,操作,执行administration 管理,控制,执行administration building 行政办公楼admissibility 可允许度admission 允许进入,通入;汽缸(被工作气体)充满程度;进汽度admission intake 进气admission port 进气口admission valve 进气阀admission velocity 进[吸]入速度admit 进气;注入,放进;容纳,承认,容许admittance 进入,通道,公差admitting pipe 进入管,进气管,进水管admix 混[掺]合admixture 掺合物;掺合adopt 采用,接受adsorb 吸附adsorbent 吸附剂,吸附物质,吸附的adsorbent concentration 吸附浓度adsorbent equipment 吸附设备adsorbent pressure 吸附压力adsorbent process 吸附过程adsorbent temperature 吸附温度adsorber 吸附器adsorption 吸附作用adsorption capacity 吸附容量adsorption coefficient 吸附系数adsorption isotherms 吸附等温线adsorption refrigeration 吸附制冷adsorption system 吸附系统advance 推进,提前,改进advance copy (新书)样本,试行本advance of admission 提前进气advance of release 提前排气advancing side of belt 皮带拉紧边(受拉部分)advantage 优点,利益,好处,便利advantageous 有利的advection 水平气流,对流advise 劝告,通告,建议advisory engineer 顾问工程师aedian fan 风动风机aerate 充(曝)气aerated 通风的;同空气混合的aerated concrete 加气混凝土aeration 充气的,通风的,透气,曝气,气浴[使物质或某空间处于新鲜空气循环中] aeration-cooling 通风降温aeration-drying 通风干燥aeration tank 曝气池aeration test 充气试验aerator 充气器,曝气设备,通气器aerial pollution 空气污染aerify 充气;使气化aerocrete aeroconcrete 加气混凝土aerodromometer 风速表[计]aerodynamic 空气动力学aerodynamic action 气动力作用aerodynamical analysis 空气动力学分析aerodynamic characteristic curve 空气动力特性曲线aerodynamic coefficient 空气动力系数aerodynamic controls 气动控制aerodynamic form 流线形,气流形aerodynamics 空气动力学aerodynamics of heat system 热系统空气动力学aerofilter 空气过滤器aerofoil 翼型aerofoil blade fan 机翼型叶片风机[具有流线形叶片的轴流风机] aerofoil fan 轴流通风机aerograph 气象记录仪aerography 气象图表,气象学aerojet 空气射流aerology 气象学aerometer 气体比重计,气量计aerophore 防毒面具,通风面具[矿工用压缩空气面具]aerosol 烟雾,尘;气溶胶;空悬液滴[悬浮在空气中的非常小的液体颗粒] aerosolize 使成烟的雾状散开aerosphere 大气,大气层aerostatic(al) 空气静力学的aerostatics 空气静力学aerothermopressor 气动热力增压器affect 影响;损伤;起作用affinity 亲合性,亲合力,相似affix 附件[录],添加剂afflux 流入;汇[集]流,聚集afire 着火的aflame 燃烧的,冒烟的afterbody 尾部afterburner 补燃器,复燃室afterburning 补燃,燃尽,烧完aftercombustion 燃[烧]完,补充[再次]燃烧aftercondenser 后冷凝器aftercooler 后冷却器,二次冷却器,(压缩机后的)空气冷却器aftercooling 再冷却[指温度调整后再冷却] afterdrying 再次干燥after end 后端afterfilter 后过滤器afterflaming 补充燃烧after flow 塑性变形,残余塑性流动afterheat 余热,后加热afterheat cooling 二次冷却,后冷却ertreatment 再处理age 使用年限,时期;老化,时效age hardening 时效硬化,老化ageing 时效,陈[老]化agency 动作,作用,介质,工具,代办,机构agent 剂,试剂,介质,因素agent of fusion 熔剂,焊剂[药]aggregate 机组,集合[综合]体;总计,骨料,填充料aggregate capacity 总功率;总容量;机组功率aggregation 聚集体aggressive agent 侵蚀剂aging=ageing 老[陈]化agitate 搅动,拨火agitation 搅拌[动];拨火;激励agitator 搅拌器agreement 契约,合同,协议,一致;符合aid 工具,设备,辅助设备;辅助air 空气,通风,通气;风动的,气动的air accumulation 集气air admitting surface 进风口面积air agitation 空气搅动air analysis 空气分析air-and-water system 气--水系统air anion-generator 负离子发生器air atomizer 空气雾化器air atomizing 空气雾化air atomizing burner 空气雾化喷油嘴air balance 空气平衡air-bath 空气浴air-bed 气垫air-blanketing 空气夹层(覆盖)air change method 换气法air change rate 换气次数,通风换气次数[单位时间(通常以每小时计)的全面换气次数air changes per hour 每小时换气次数air channel 风道air chimney 竖通风道,通风井air chute 风道air circuit 空气管道系统air circulation 空气循环[在一个封闭的空间内,空气的自然或强制运动]air circulation ratio 换气次数air classifier 气体分离器air cleaner 空气净化装置,空气似鱗除掉空气中含有的固体或液体颗粒的设备]air cleaning 空气净化[洁净]air cleaning devices 空气清洁装置air cock 气阀,放气旋塞air cock on the radiator 散热器放气阀air collector 集气罐air-compressor 空气压缩机air condenser 风冷冷凝器air-condition 空气调节air-conditioned room 空气调节房间air-conditioned space 空调空间air conditioner 空气调节器[可同时控制温度、湿度、纯净度等几种空气参数的组装设备]air-conditioning 空气调节[同时控制温度,湿度,纯净度和分配的空气处理法,用以适应空调场所的需要。

暖通空调专业外文翻译 --空调系统

英文文献Air Conditioning SystemsAir conditioning has rapidly grown over the past 50 years, from a luxury to a standard system included in most residential and commercial buildings. In 1970, 36% of residences in the U.S. were either fully air conditioned or utilized a room air conditioner for cooling (Blue, et al., 1979). By 1997, this number had more than doubled to 77%, and that year also marked the first time that over half (50.9%) of residences in the U.S. had central air conditioners (Census Bureau, 1999). An estimated 83% of all newhomes constructed in 1998 had central air conditioners (Census Bureau, 1999). Air conditioning has also grown rapidly in commercial buildings. From 1970 to 1995, the percentage of commercial buildings with air conditioning increased from 54 to 73% (Jackson and Johnson, 1978, and DOE, 1998).Air conditioning in buildings is usually accomplished with the use of mechanical or heat-activated equipment. In most applications, the air conditioner must provide both cooling and dehumidification to maintain comfort in the building. Air conditioning systems are also used in other applications, such as automobiles, trucks, aircraft, ships, and industrial facilities. However, the description of equipment in this chapter is limited to those commonly used in commercial and residential buildings.Commercial buildings range from large high-rise office buildings to the corner convenience store. Because of the range in size and types of buildings in the commercial sector, there is a wide variety of equipment applied in these buildings. For larger buildings, the air conditioning equipment is part of a total system design that includes items such as a piping system, air distribution system, and cooling tower. Proper design of these systems requires a qualified engineer. The residential building sector is dominatedby single family homes and low-rise apartments/condominiums. The cooling equipment applied in these buildings comes in standard “packages” that are often both sized and installed by the air conditioning contractor.The chapter starts with a general discussion of the vapor compression refrigeration cycle then moves to refrigerants and their selection, followed by packaged Chilled Water Systems。

专业英语对照表(暖通空调-全)

专业英语对照表additional factor for wind foce||风力附加率additional heat loss||附加耗热adiabatic humidification||绝热加湿weighted sound pressure level||A声级absolute humidity||绝对湿度absolute roughness||绝对粗糙度absorbate 吸收质absorbent 吸收剂absorbent||吸声材料absorber||吸收器absorptance for solar radiation||太阳辐射热吸收系数absorption equipment||吸收装置absorption of gas and vapor||气体吸收absorptiong refrige rationg cycle||吸收式制冷循环absorption-type refrigerating machine||吸收式制冷机access door||检查门acoustic absorptivity||吸声系数actual density||真密度actuating element||执行机构actuator||执行机构adaptive control system||自适应控制系统additional factor for exterior door||外门附加率additional factor for intermittent heating||间歇附加率additional factor for wind force||高度附加率additional heat loss||风力附加率adiabatic humidification||附加耗热量adiabatic humidiflcation||绝热加湿adsorbate||吸附质adsorbent||吸附剂adsorber||吸附装置adsorption equipment||吸附装置adsorption of gas and vapor||气体吸附aerodynamic noise||空气动力噪声aerosol||气溶胶air balance||风量平衡air changes||换气次数air channel||风道air cleanliness||空气洁净度air collector||集气罐air conditioning||空气调节air conditioning condition||空调工况air conditioning equipment||空气调节设备air conditioning machine room||空气调节机房air conditioning system||空气调节系统air conditioning system cooling load||空气调节系统冷负荷air contaminant||空气污染物air-cooled condenser||风冷式冷凝器air cooler||空气冷却器air curtain||空气幕air cushion shock absorber||空气弹簧隔振器air distribution||气流组织air distributor||空气分布器air-douche unit with water atomization||喷雾风扇air duct||风管、风道air filter||空气过滤器air handling equipment||空气调节设备air handling unit room||空气调节机房air header||集合管air humidity||空气湿度air inlet||风口air intake||进风口air manifold||集合管air opening||风口air pollutant||空气污染物air pollution||大气污染air preheater||空气预热器air return method||回风方式air return mode||回风方式air return through corridor||走廊回风air space||空气间层air supply method||送风方式TOP 2#大中小发表于 2006-5-26 11:46 只看该作者air supply mode||送风方式air supply (suction) opening with slide plate||插板式送(吸)风口air supply volume per unit area||单位面积送风量air temperature||空气温度air through tunnel||地道风air-to-air total heat exchanger||全热换热器air-to-cloth ratio||气布比air velocity at work area||作业地带空气流速air velocity at work place||工作地点空气流速air vent||放气阀air-water systen||空气—水系统airborne particles||大气尘air hater||空气加热器airspace||空气间层alarm signal||报警信号ail-air system||全空气系统all-water system||全水系统allowed indoor fluctuation of temperature and relative humidity||室内温湿度允许波动范围ambient noise||环境噪声ammonia||氨amplification factor of centrolled plant||调节对象放大系数amplitude||振幅anergy||@||angle of repose||安息角ange of slide||滑动角angle scale||热湿比angle valve||角阀annual [value]||历年值annual coldest month||历年最冷月annual hottest month||历年最热月anticorrosive||缓蚀剂antifreeze agent||防冻剂antifreeze agent||防冻剂apparatus dew point||机器露点apparent density||堆积密度aqua-ammonia absorptiontype-refrigerating machine||氨—水吸收式制冷机aspiation psychrometer||通风温湿度计Assmann aspiration psychrometer||通风温湿度计atmospheric condenser||淋激式冷凝器atmospheric diffusion||大气扩散atmospheric dust||大气尘atmospheric pollution||大气污染atmospheric pressure||大气压力(atmospheric stability||大气稳定度atmospheric transparency||大气透明度atmospheric turblence||大气湍流automatic control||自动控制automatic roll filter||自动卷绕式过滤器automatic vent||自动放气阀available pressure||资用压力average daily sol-air temperature||日平均综合温度axial fan||轴流式通风机azeotropic mixture refrigerant||共沸溶液制冷剂Bback-flow preventer||防回流装置back pressure of steam trap||凝结水背压力back pressure return余压回水background noise||背景噪声back plate||挡风板bag filler||袋式除尘器baghouse||袋式除尘器barometric pressure||大气压力basic heat loss||基本耗热量hend muffler||消声弯头bimetallic thermometer||双金属温度计black globe temperature||黑球温度blow off pipe||排污管blowdown||排污管boiler||锅炉TOP3#大中小发表于 2006-5-26 11:46 只看该作者A- boiller house||锅炉房boiler plant||锅炉房boiler room||锅炉房booster||加压泵branch||支管branch duct||(通风) 支管branch pipe||支管building envelope||围护结构building flow zones||建筑气流区building heating entry||热力入口bulk density||堆积密度bushing||补心butterfly damper||蝶阀by-pass damper||空气加热器〕旁通阀by-pass pipe||旁通管canopy hood ||伞形罩capillary tube||毛细管capture velocity||控制风速capture velocity||外部吸气罩capturing hood ||卡诺循环Carnot cycle||串级调节系统cascade control system||铸铁散热器cast iron radiator||催化燃烧catalytic oxidation ||催化燃烧ceilling fan||吊扇ceiling panelheating||顶棚辐射采暖center frequency||中心频率central air conditionint system ||集中式空气调节系统central heating||集中采暖central ventilation system||新风系统centralized control||集中控制centrifugal compressor||离心式压缩机entrifugal fan||离心式通风机check damper||(通风〕止回阀heck valve||止回阀chilled water||冷水chilled water system with primary-secondary pumps||一、二次泵冷水系统chimney||(排气〕烟囱circuit||环路circulating fan||风扇circulating pipe||循环管circulating pump||循环泵clean room||洁净室cleaning hole||清扫孔cleaning vacuum plant||真空吸尘装置cleanout opening||清扫孔clogging capacity||容尘量close nipple||长丝closed booth||大容积密闭罩closed full flow return||闭式满管回水TOP4#大中小发表于 2006-5-26 11:46 只看该作者第六章制冷第一节一般术语第6.1.1条制冷 refrigeration用人工方法从一物质或空间移出热量,以便为空气调节、冷藏和科学研究等提供冷源的技术。

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英文文献Air Conditioning SystemsAir conditioning has rapidly grown over the past 50 years, from a luxury to a standard system included in most residential and commercial buildings. In 1970, 36% of residences in the U.S. were either fully air conditioned or utilized a room air conditioner for cooling (Blue, et al., 1979). By 1997, this number had more than doubled to 77%, and that year also marked the first time that over half (50.9%) of residences in the U.S. had central air conditioners (Census Bureau, 1999). An estimated 83% of all newhomes constructed in 1998 had central air conditioners (Census Bureau, 1999). Air conditioning has also grown rapidly in commercial buildings. From 1970 to 1995, the percentage of commercial buildings with air conditioning increased from 54 to 73% (Jackson and Johnson, 1978, and DOE, 1998).Air conditioning in buildings is usually accomplished with the use of mechanical or heat-activated equipment. In most applications, the air conditioner must provide both cooling and dehumidification to maintain comfort in the building. Air conditioning systems are also used in other applications, such as automobiles, trucks, aircraft, ships, and industrial facilities. However, the description of equipment in this chapter is limited to those commonly used in commercial and residential buildings.Commercial buildings range from large high-rise office buildings to the corner convenience store. Because of the range in size and types of buildings in the commercial sector, there is a wide variety of equipment applied in these buildings. For larger buildings, the air conditioning equipment is part of a total system design that includes items such as a piping system, air distribution system, and cooling tower. Proper design of these systems requires a qualified engineer. The residential building sector is dominated by single family homes and low-rise apartments/condominiums. The cooling equipment applied in these buildings comes in standard ―packages‖ that are often both sized and installed by the air conditioning contractor.The chapter starts with a general discussion of the vapor compression refrigeration cycle then moves to refrigerants and their selection, followed by packaged Chilled Water Systems。

1.1 Vapor Compression CycleEven though there is a large range in sizes and variety of air conditioning systems used in buildings, most systems utilize the vapor compression cycle to produce the desired cooling and dehumidification. This cycle is also used for refrigerating and freezing foods and for automotive air conditioning. The first patent on a mechanically driven refrigeration system was issued to Jacob Perkins in 1834 in London, and the firstviable commercial system was produced in 1857 by James Harrison and D.E. Siebe.Besides vapor compression, there are two less common methods used to produce cooling in buildings: the absorption cycle and evaporative cooling. These are described later in the chapter. With the vaporcompression cycle, a working fluid, which is called the refrigerant, evaporates and condenses at suitable pressures for practical equipment designs.The four basic components in every vapor compression refrigeration system are the compressor, condenser, expansion device, and evaporator. The compressor raises the pressure of the refrigerant vapor so that the refrigerant saturation temperature is slightly above the temperature of the cooling medium used in the condenser. The type of compressor used depends on the application of the system. Large electric chillers typically use a centrifugal compressor while small residential equipment uses a reciprocating or scroll compressor.The condenser is a heat exchanger used to reject heat from the refrigerant to a cooling medium. The refrigerant enters the condenser and usually leaves as a subcooled liquid. Typical cooling mediums used in condensers are air and water. Most residential-sized equipment uses air as the cooling medium in the condenser, while many larger chillers use water. After leaving the condenser, the liquid refrigerant expands to a lower pressure in the expansion valve.The expansion valve can be a passive device, such as a capillary tube or short tube orifice, or an active device, such as a thermal expansion valve or electronic expansion valve. The purpose of the valve is toregulate the flow of refrigerant to the evaporator so that the refrigerant is superheated when it reaches the suction of the compressor.At the exit of the expansion valve, the refrigerant is at a temperature below that of the medium (air or water) to be cooled. The refrigerant travels through a heat exchanger called the evaporator. It absorbs energy from the air or water circulated through the evaporator. If air is circulated through the evaporator, the system is called a direct expansion system. If water is circulated through the evaporator, it is called a chiller. In either case, the refrigerant does not make direct contact with the air or water in the evaporator. The refrigerant is converted from a low quality, two-phase fluid to a superheated vapor under normal operating conditions in the evaporator. The vapor formed must be removed by the compressor at a sufficient rate to maintain the low pressure in the evaporator and keep the cycle operating.All mechanical cooling results in the production of heat energy that must be rejected through the condenser. In many instances, this heat energy is rejected to the environment directly to the air in thecondenser or indirectly to water where it is rejected in a cooling tower. With some applications, it is possible to utilize this waste heat energy to provide simultaneous heating to the building. Recovery of this waste heat at temperatures up to 65°C (150°F) can be used to reduce costs for space heating.Capacities of air conditioning are often expressed in either tons or kilowatts (kW) of cooling. The ton is a unit of measure related to the ability of an ice plant to freeze one short ton (907 kg) of ice in 24 hr. Its value is 3.51 kW (12,000 Btu/hr). The kW of thermal cooling capacity produced by the air conditioner must not be confused with the amount of electrical power (also expressed in kW) required to produce the cooling effect.2.1 Refrigerants Use and SelectionUp until the mid-1980s, refrigerant selection was not an issue in most building air conditioning applications because there were no regulations on the use of refrigerants. Many of the refrigerants historically used for building air conditioning applications have been chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). Most of these refrigerants are nontoxic and nonflammable. However, recent U.S. federal regulations (EPA 1993a; EPA 1993b) and international agreements (UNEP, 1987) have placed restrictions on the production and use of CFCs and HCFCs. Hydrofluorocarbons (HFCs) are now being used in some applications where CFCs and HCFCs were used. Having an understanding of refrigerants can help a building owner or engineer make a more informed decision about the best choice of refrigerants for specific applications. This section discusses the different refrigerants used in or proposed for building air conditioning applications and the regulations affecting their use.The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) has a standard numbering system,for identifying refrigerants (ASHRAE, 1992). Many popular CFC, HCFC, and HFC refrigerants are in the methane and ethane series of refrigerants. They are called halocarbons, or halogenated hydrocarbons, because of the presence of halogen elements such as fluorine or chlorine (King, 1986).Zeotropes and azeotropes are mixtures of two or more different refrigerants. A zeotropic mixture changes saturation temperatures as it evaporates (or condenses) at constant pressure. The phenomena is called temperature glide. At atmospheric pressure, R-407C has a boiling (bubble) point of –44°C (–47°F) and a condensation (dew) point of –37°C (–35°F), which gives it a temperature glide of 7°C (12°F). An azeotropic mixture behaves like a single component refrigerant in that the saturation temperature does not change appreciably as it evaporates or condenses at constant pressure. R-410A has a small enoughtemperature glide (less than 5.5°C, 10°F) that it is considered a near-azeotropic refrigerant mixture.ASHRAE groups refrigerants by their toxicity and flammability (ASHRAE, 1994).Group A1 is nonflammable and least toxic, while Group B3 is flammable and most toxic. Toxicity is based on the upper safety limit for airborne exposure to the refrigerant. If the refrigerant is nontoxic in quantities less than 400 parts per million, it is a Class A refrigerant. If exposure to less than 400 parts per million is toxic, then the substance is given the B designation. The numerical designations refer to the flammability of the refrigerant. The last column of Table 4.2.1 shows the toxicity and flammability rating of common refrigerants.Refrigerant 22 is an HCFC, is used in many of the same applications, and is still the refrigerant of choice in many reciprocating and screw chillers as well as small commercial and residential packaged equipment. It operates at a much higher pressure than either R-11 or R-12. Restrictions on the production of HCFCs will start in 2004. In 2010, R-22 cannot be used in new air conditioning equipment. R-22 cannot be produced after 2020 (EPA, 1993b).R-407C and R-410A are both mixtures of HFCs. Both are considered replacements for R-22. R-407C is expected to be a drop-in replacement refrigerant for R-22. Its evaporating and condensing pressures for air conditioning applications are close to those of R-22 (Table 4.2.3). However, replacement of R-22 with R-407C should be done only after consulting with the equipment manufacturer. At a minimum, the lubricant and expansion device will need to be replaced. The first residential-sized air conditioning equipment using R-410A was introduced in the U.S. in 1998. Systems using R-410A operate at approximately 50% higher pressure than R-22 (Table 4.2.3); thus, R-410A cannot be used as a drop-in refrigerant for R-22. R-410A systems utilize compressors, expansion valves, and heat exchangers designed specifically for use with that refrigerant.Ammonia is widely used in industrial refrigeration applications and in ammonia water absorption chillers. It is moderately flammable and has a class B toxicity rating but has had limited applications in commercial buildings unless the chiller plant can be isolated from the building being cooled (Toth, 1994, Stoecker, 1994). As a refrigerant, ammonia has many desirable qualities. It has a high specific heat and high thermal conductivity. Its enthalpy of vaporization is typically 6 to 8 times higher than that of the commonly used halocarbons, and it provides higher heat transfer compared to halocarbons. It can be used in both reciprocating and centrifugal compressors.Research is underway to investigate the use of natural refrigerants, such as carbon dioxide (R-744) and hydrocarbons in air conditioning and refrigeration systems (Bullock, 1997, and Kramer, 1991). Carbondioxide operates at much higher pressures than conventional HCFCs or HFCs and requires operation above the critical point in typical air conditioning applications. Hydrocarbon refrigerants, often thought of as too hazardous because of flammability, can be used in conventional compressors and have been used in industrial applications. R-290, propane, has operating pressures close to R-22 and has been proposed as a replacement for R-22 (Kramer, 1991). Currently, there are no commercial systems sold in the U.S. for building operations that use either carbon dioxide or flammable refrigerants.3.1 Chilled Water SystemsChilled water systems were used in less than 4% of commercial buildings in the U.S. in 1995. However, because chillers are usually installed in larger buildings, chillers cooled over 28% of the U.S. commercial building floor space that same year (DOE, 1998). Five types of chillers are commonly applied to commercial buildings: reciprocating, screw, scroll, centrifugal, and absorption. The first four utilize the vapor compression cycle to produce chilled water. They differ primarily in the type of compressor used. Absorption chillers utilize thermal energy (typically steam or combustion source) in an absorption cycle with either an ammonia-water or water-lithium bromide solution to produce chilled water.3.2 Overall SystemAn estimated 86% of chillers are applied in multiple chiller arrangements like that shown in the figure (Bitondo and Tozzi, 1999). In chilled water systems, return water from the building is circulated through each chiller evaporator where it is cooled to an acceptable temperature (typically 4 to 7°C) (39 to 45°F). The chilled water is then distributed to water-to-air heat exchangers spread throughout the facility. In these heat exchangers, air is cooled and dehumidified by the cold water. During the process, the chilled water increases in temperature and must be returned to the chiller(s).The chillers are water-cooled chillers. Water is circulated through the condenser of each chiller where it absorbs heat energy rejected from the high pressure refrigerant. The water is then pumped to a cooling tower where the water is cooled through an evaporation process. Cooling towers are described in a later section. Chillers can also be air cooled. In this configuration, the condenserwould be a refrigerant-to-air heat exchanger with air absorbing the heat energy rejected by the high pressure refrigerant.Chillers nominally range in capacities from 30 to 18,000 kW (8 to 5100 ton). Most chillers sold in the U.S. are electric and utilize vapor compression refrigeration to produce chilled water. Compressors for these systems are either reciprocating, screw, scroll, or centrifugal in design. A small number of centrifugalchillers are sold that use either an internal combustion engine or steam drive instead of an electric motor to drive the compressor.The type of chiller used in a building depends on the application. For large office buildings or in chiller plants serving multiple buildings, centrifugal compressors are often used. In applications under 1000 kW (280 tons) cooling capacities, reciprocating or screw chillers may be more appropriate. In smaller applications, below 100 kW (30 tons), reciprocating or scroll chillers are typically used.3.3 Vapor Compression ChillersThe nominal capacity ranges for the four types of electrically driven vapor compression chillers. Each chiller derives its name from the type of compressor used in the chiller. The systems range in capacities from the smallest scroll (30 kW; 8 tons) to the largest centrifugal (18,000 kW; 5000 tons).Chillers can utilize either an HCFC (R-22 and R-123) or HFC (R-134a) refrigerant. The steady state efficiency of chillers is often stated as a ratio of the power input (in kW) to the chilling capacity (in tons). A capacity rating of one ton is equal to 3.52 kW or 12,000 btu/h. With this measure of efficiency, the smaller number is better. centrifugal chillers are the most efficient; whereas, reciprocating chillers have the worst efficiency of the four types. The efficiency numbers provided in the table are the steady state full-load efficiency determined in accordance to ASHRAE Standard 30 (ASHRAE, 1995). These efficiency numbers do not include the auxiliary equipment, such as pumps and cooling tower fans that can add from 0.06 to 0.31kW/ton to the numbers shownChillers run at part load capacity most of the time. Only during the highest thermal loads in the building will a chiller operate near its rated capacity. As a consequence, it is important to know how the efficiency of the chiller varies with part load capacity. a representative data for the efficiency (in kW/ton) as a function of percentage full load capacity for a reciprocating, screw, and scroll chiller plus a centrifugal chiller with inlet vane control and one with variable frequency drive (VFD) for the compressor. The reciprocating chiller increases in efficiency as it operates at a smaller percentage of full load. In contrast, the efficiency of a centrifugal with inlet vane control is relatively constant until theload falls to about 60% of its rated capacity and its kW/ton increases to almost twice its fully loaded value.In 1998, the Air Conditioning and Refrigeration Institute (ARI) developed a new standard that incorporates into their ratings part load performance of chillers (ARI 1998c). Part load efficiency is expressed by a single number called the integrated part load value (IPLV). The IPLV takes data similar to that in Figure 4.2.3 and weights it at the 25%, 50%, 75%, and 100% loads to produce a single integratedefficiency number. The weighting factors at these loads are 0.12, 0.45, 0.42, and 0.01, respectively. The equation to determine IPLV is:Most of the IPLV is determined by the efficiency at the 50% and 75% part load values. Manufacturers will provide, on request, IPLVs as well as part load efficiencies.The four compressors used in vapor compression chillers are each briefly described below. While centrifugal and screw compressors are primarily used in chiller applications, reciprocating and scroll compressors are also used in smaller unitary packaged air conditioners and heat pumps.3.4 Reciprocating CompressorsThe reciprocating compressor is a positive displacement compressor. On the intake stroke of the piston, a fixed amount of gas is pulled into the cylinder. On the compression stroke, the gas is compressed until the discharge valve opens. The quantity of gas compressed on each stroke is equal to the displacement of the cylinder. Compressors used in chillers have multiple cylinders, depending on the capacity of the compressor. Reciprocating compressors use refrigerants with low specific volumes and relatively high pressures. Most reciprocating chillers used in building applications currently employ R-22.Modern high-speed reciprocating compressors are generally limited to a pressure ratio of approximately nine. The reciprocating compressor is basically a constant-volume variable-head machine. It handles variousdischarge pressures with relatively small changes in inlet-volume flow rate as shown by the heavy line (labeled 16 cylinders).Condenser operation in many chillers is related to ambient conditions, for example, through cooling towers, so that on cooler days the condenser pressure can be reduced. When the air conditioning load is lowered, less refrigerant circulation is required. The resulting load characteristic isrepresented by the solid line that runs from the upper right to lower left.The compressor must be capable of matching the pressure and flow requirements imposed by the system. The reciprocating compressor matches the imposed discharge pressure at any level up to its limiting pressure ratio. Varying capacity requirements can be met by providing devices that unload individual or multiple cylinders. This unloading is accomplished by blocking the suction or discharge valves that open either manually or automatically. Capacity can also be controlled through the use of variable speed or multi-speed motors. When capacity control is implemented on a compressor, other factors at part-load conditions need to considered, such as (a) effect on compressor vibration and sound when unloaders are used, (b) the need for good oil return because of lower refrigerant velocities, and (c) proper functioning of expansion devices at the lower capacities.With most reciprocating compressors, oil is pumped into the refrigeration system from the compressor during normal operation. Systems must be designed carefully to return oil to the compressor crankcase to provide for continuous lubrication and also to avoid contaminating heat-exchanger surfaces.Reciprocating compressors usually are arranged to start unloaded so that normal torque motors are adequate for starting. When gas engines are used for reciprocating compressor drives, careful matching of the torque requirements of the compressor and engine must be considered.3.5 Screw CompressorsScrew compressors, first introduced in 1958 (Thevenot, 1979), are positive displacement compressors. They are available in the capacity ranges that overlap with reciprocating compressors and small centrifugal compressors. Both twin-screw and single-screw compressors are used in chillers. Thetwin-screw compressor is also called the helical rotary compressor. A cutaway of a twin-screw compressor design. There are two main rotors (screws). One is designated male and the other female .The compression process is accomplished by reducing the volume of the refrigerant with the rotary motion of screws. At the low pressure side of the compressor, a void is created when the rotors begin to unmesh. Low pressure gas is drawn into the void between the rotors. As the rotors continue to turn, the gas is progressively compressed as it moves toward the discharge port. Once reaching a predetermined volume ratio, the discharge port is uncovered and the gas is discharged into the high pressure side of the system. At a rotation speed of 3600 rpm, a screw compressor has over 14,000 discharges per minute (ASHRAE, 1996).Fixed suction and discharge ports are used with screw compressors instead of valves, as used inreciprocating compressors. These set the built-in volume ratio — the ratio of the volume of fluid space in the meshing rotors at the beginning of the compression process to the volume in the rotors as the discharge port is first exposed. Associated with the built-in volume ratio is a pressure ratio that depends on the properties of the refrigerant being compressed. Screw compressors have the capability to operate at pressure ratios of above 20:1 (ASHRAE, 1996). Peak efficiency is obtained if the discharge pressure imposed by the system matches the pressure developed by the rotors when the discharge port is exposed. If the interlobe pressure in the screws is greater or less than discharge pressure, energy losses occur but no harm is done to the compressor.Capacity modulation is accomplished by slide valves that provide a variable suction bypass or delayed suction port closing, reducing the volume of refrigerant compressed. Continuously variable capacity control is most common, but stepped capacity control is offered in some manufacturers’ machines. Variable discharge porting is available on some machines to allow control of the built-in volume ratio during operation.Oil is used in screw compressors to seal the extensive clearance spaces between the rotors, to cool the machines, to provide lubrication, and to serve as hydraulic fluid for the capacity controls. An oil separator is required for the compressor discharge flow to remove the oil from the high-pressure refrigerant so that performance of system heat exchangers will not be penalized and the oil can be returned for reinjection in the compressor.Screw compressors can be direct driven at two-pole motor speeds (50 or 60 Hz). Their rotary motion makes these machines smooth running and quiet. Reliability is high when the machines are applied properly. Screw compressors are compact so they can be changed out readily for replacement or maintenance. The efficiency of the best screw compressors matches or exceeds that of the best reciprocating compressors at full load. High isentropic and volumetric efficiencies can be achieved with screw compressors because there are no suction or discharge valves and small clearance volumes. Screw compressors for building applications generally use either R-134a or R-22.中文译文空调系统过去 50 年以来,空调得到了快速的发展,从曾经的奢侈品发展到可应用于大多数住宅和商业建筑的比较标准的系统。

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