精密空调系统说明
精密空调系统说明
机房环境特点
机房中的计算机及网络设备在运行中散热量大而且集中,散湿量极小,散热量的95%是显热,热湿比极大,焓差小。
在这种情况下,空气处理可近似作为一个等湿降温过程。
温度是保证电子设备正常工作的关键之一,精密A/C的恒温精度达±1℃。
经实验机房温度上升5℃其设备的可靠性下降25%,如上升至10℃,可靠性下降40%,因此保证机房温度恒定就非常重要。
根据热的传播方式—传导、辐射、对流分析,疏散显热的最有效方式是对流,这就需要大量的冷风将热量带走。
气流速度(送风量),是保证机房内设备周围的温湿度均匀分布的首要条件.风量小,会造成设备周围及内部的温度升高,尤其是没有自散热功能的设备其故障率达75%以上,精密空调的送风量达到4000-12000M3/H,可以使机房内每一点压力都能均匀分布,其误差率不超过15%。
集中空调主要考虑人体对环境的要求,不具备大风量。
因此,集中空调方式就会出现虽然冷量够,但设备热量却散不出去的问题。
集中空调是用风管送风,而非静压风库,送风均匀度较差,所以集中空调不适合在机房使用。
机房专用精密空调充分考虑了计算机设备的特点,在相同制冷量的基础上,加大了风量。
加之专用的送回风风库,送、回风均匀,能够较为迅速、有效地带走机器热量。
计算机系统和程控交换机投入正常运行后,一般有个较长时间的运行周期,特别是程控交换机可能全年无休,连续不断地运行。
即便在冬季,机房内还有余热。
因此,机房空调系统必须考虑长时间运行的可靠性和可操作性。
精密空调设计寿命是最低是10年,连续运行时间是86400小时,平均无故率达到25000小时,实际运用过程中,精密A/C可运行15年。
计算机设备除了对温度有要求外,对湿度亦有要求。
适当的湿度是保证设备正常工作的条件。
湿度太低会产生静电,危害设备安全。
湿度太高也会增加设备的故障率,如湿度低于20%的时候,机房内工作人员行走时静电可达成1.2万伏,如湿度高达80%RH,温度16℃时,设备表面就会结露,设备的故障率就会高达65%,这样就要求机房要将湿度严格控制在规定的范围内。
而集中空调无法控制湿度恒定,如果再加一套湿度控制系统,无形中又加大了投资维护量。
而专用空调实现了对湿度的自动控制,使计算机设备不论在极湿润的夏季还是在极干躁的冬季都能在恒湿状态下正常工作。
此外,机房对洁净度亦有严格的要求,这个要求远远高于办公用房。
由于集中空调送风方式的特点决定其不能满足此要求。
而专用空调中有中效过滤系统,可随时更换过滤网,方便、省时、经济。
同时,根据机房的围护结构特点(主要是墙体、顶面、地面,包括:楼
层、朝向、外墙、内墙及墙体材料,及门窗型式、单双层结构及缝隙、散热)、人员的发热量,照明灯具的发热量,新风负荷等各种因素,计算出计算机房所需的制冷量,因此选定空调的容量。
A 级机房内温度、湿度的要求:
A 级机房内洁净度的要求:
几点:
第一、机房要密封、墙体围护结构要清洁。
第二、机房要保持正压,防止脏空气侵蚀。
新风做到两级净化,即初效、亚高效过滤器,从而使输入机房的空气洁净度大大提高。
第三、空调机设中效过滤器,并定期更换,从而保证机房空气在不断循环中得以净化。
我公司的方案设计可以保证,空气洁净度达到国标要求。
空调选型
机房的热负荷主要来自两个方面:
机房内的计算机设备、照明灯具、辅助设施及工作人员所产生的热;由机房外部进入的热,如:从墙壁、屋顶、隔断和地面传入机房的热;透过玻璃窗射入的太阳辐射热;从窗户及门的缝隙渗入的风而侵入的热;新风机补充新风带进来的热量等。
为达到机房的环境要求,空调机的选型十分重要。
确保计算机房内的系统设备在恒温、恒湿工作条件下的送风量以及使人感到舒适的送风量,必须计算出机房内的热负荷。
选型爱默生CM20AF-15-M空调
网络机房(65平方米),采用2台CM20AF-15-M机组,单台制冷量20KW,单压缩机组。
UPS专用机房(24平方米),采用一台CM20AF-15-M机组,单台制冷量20KW,单压缩机组。
中控室选用两台嵌入式大金空调制冷。
空调送风方式
我们设计选用的机房专用空调,制冷方式为风冷制冷,送风方式为下送风上回风。
大中型计算机机房内通常设有架空的活动地板,在活动地板下的空间,常被空调用作送风的静压风库,通过保持正压,气流组织分配均匀地送入各个网络设备内。
下送上回气流组织把机房空调与机柜或机架柜的设备冷却合二为一个送风系统,回风通过机房顶棚上装设的风口回至空调内。
计算机的类型不同,体积不等,但它们共同的都是由许多电子元器件所组合。
计算机机柜是个散热量大而又集中的设备,运行中的机柜内温度不断升高,此时,机柜的一部分热量向机房内散放,使机房内的室温升高,同时,又影响到机柜的散热。
当机柜的散热不充分时,机柜内的温度将继续升高,到一定值时,造成电子元器件发生参数故障。
因此,机房空调与机柜冷却两者互为关联,其中首要的是机柜冷却,其次才是机房的舒适环境。
机房的送回风方式不但关系到机柜的冷却效果,而且也关系到空调的送风风量及初次投资和日常经济运行。
下送式机房活动地板的空调送风风口一般布置在计算机机柜近侧或机架底部。
冷却空气从设在机柜附近的活动地板风口送出,送出的低温空气只在瞬间与机房的热空气混合,即刻从机柜的进风口进入机柜,有效地提高了机柜冷却空气的质量,用较少的风量,不但提高了机柜的冷却效果,同时也减少了送入的洁净空气与机房内含有悬浮尘埃空气相混合的污染,从而也提高了进入计算机机柜的空气洁净度。
通过对一些机房的调查测定,经过分析,得出结论:在机房单位面积的耗冷量相近,送风温度相近,采用下送上回的送回风方式,机柜实际获得的冷却效果,优于其它的送回风方式。
空调机的上下水问题
加湿系统的上水管应采用6分镀锌管连接至现场的供水口。
为方便进行检修,加湿器系统的进水接口应设置球阀。
球阀应安装于靠近室内机组右方一米范围内不受遮挡处。
随机附带的减压橡胶垫必须按厂方指示安装妥当。
空调系统的排水管应采用25mm的PVC管或双面热镀锌管连接至现场的下水口。
出水口的位置应于现场与客户商定。
上,下水管道的连接应小心进行,并确定无任何泄漏及固定于地面或墙面。
随机附带的排水水封弯头等配件必须按厂家指示安装妥当。
为了更好的预防和解决漏水问题,本方案采取了在机房精密空调所在地板下方砌筑规格为100X150mm矩形挡水坝,并且在挡水坝中预留下水口,以防止机房精密空调漏水托盘水满溢出的情况。
这种措施可以有效地解决漏水带来的问题。
如同一现场机组过多并共用一根排水管时,必须加大排水管管径。
排水管必须向排水方向倾斜1%坡度,以保证排水顺畅,避免阻塞。
机房内我们安装了漏水报警系统,一旦漏水,系统将自动报警,催促值班人员采取措施,避免机房受到不应有的损失。
精密空调系统说明
精密空调系统说明机房环境特点机房中的计算机及网络设备在运行中散热量大而且集中,散湿量极小,散热量的95%是显热,热湿比极大,焓差小。
在这种情况下,空气处理可近似作为一个等湿降温过程。
温度是保证电子设备正常工作的关键之一,精密A/C的恒温精度达±1℃。
经实验机房温度上升5℃其设备的可靠性下降25%,如上升至10℃,可靠性下降40%,因此保证机房温度恒定就非常重要。
根据热的传播方式—传导、辐射、对流分析,疏散显热的最有效方式是对流,这就需要大量的冷风将热量带走。
气流速度(送风量),是保证机房内设备周围的温湿度均匀分布的首要条件.风量小,会造成设备周围及内部的温度升高,尤其是没有自散热功能的设备其故障率达75%以上,精密空调的送风量达到4000-12000M3/H,可以使机房内每一点压力都能均匀分布,其误差率不超过15%。
集中空调主要考虑人体对环境的要求,不具备大风量。
因此,集中空调方式就会出现虽然冷量够,但设备热量却散不出去的问题。
集中空调是用风管送风,而非静压风库,送风均匀度较差,所以集中空调不适合在机房使用。
机房专用精密空调充分考虑了计算机设备的特点,在相同制冷量的基础上,加大了风量。
加之专用的送回风风库,送、回风均匀,能够较为迅速、有效地带走机器热量。
计算机系统和程控交换机投入正常运行后,一般有个较长时间的运行周期,特别是程控交换机可能全年无休,连续不断地运行。
即便在冬季,机房内还有余热。
因此,机房空调系统必须考虑长时间运行的可靠性和可操作性。
精密空调设计寿命是最低是10年,连续运行时间是86400小时,平均无故率达到25000小时,实际运用过程中,精密A/C可运行15年。
计算机设备除了对温度有要求外,对湿度亦有要求。
适当的湿度是保证设备正常工作的条件。
湿度太低会产生静电,危害设备安全。
湿度太高也会增加设备的故障率,如湿度低于20%的时候,机房内工作人员行走时静电可达成1.2万伏,如湿度高达80%RH,温度16℃时,设备表面就会结露,设备的故障率就会高达65%,这样就要求机房要将湿度严格控制在规定的范围内。
美的精密空调mav013说明书
美的精密空调mav013说明书
一、除湿运行设定
首先我们来了解下除湿运行设定,先将遥控器上面的模式键按住,然后等到显示屏上面出现了水滴的字符后就将手松开,依然是运用上下箭头的按键进行温度的调节,选择适合自己的温度。
二、制冷的设定
制冷的设定和除湿的设定其实是一样的,我们将遥控器上面的模式键按住,然后可以在显示屏上面看到出现了雪花的字符,这个时候就可以松手了,然后运用遥控器上面的上下箭头按键进行调节温度,可以选择自己适合的温度。
三、风档选择设置
风档选择设置可以在关机的状态下将功能键和定时键同时按下,5秒钟左右就可以调出调试的状态,在显示屏上面可以看到,我们使用模式键调节为01之后,再使用上下箭头键进行风机的调整,这个时候我们有两种选择,一种是01,第三档,另一种是02,高三档,而一般来说,空调的默认出厂设置就是01,那么我们可以根据自己的喜好进行选择,然后再按下确认键退出模式的设计程序。
四、解锁方法
1、空调遥控器*简单的解锁放发就是将遥控器背面的电池取下来,过了十分钟后再装上去就可以恢复出产设置了。
2、假如放你遇到遥控器被锁住的问题,那么则可以将遥控器的电池盖打开,我们可以在功能按键的位置上找到一个写着开锁关锁的小孔,找到之后就可以用牙签或者其他细小的物品将它按下去,按下一次,空调遥控器的显示屏上面就会出现一个锁头的图像。
在空调遥控器中,虽然开关键能够退出调试的状态,但是却没有记忆功能,所以我们将这个界面调节出来之后,系统会在相应的按键输入之后20秒进行反应,如果20秒内都没有任何的操作,那么程序会自动恢复成设定的界面,不会对当前的设置有所记忆。
说明+动图,保证让你把数据机房空调系统弄得明明白白
说明+动图,保证让你把数据机房空调系统弄得明明白白机房空调属于精密空调的一种,是为了满足精密设备特殊工艺及特定环境的要求而设计的,其目的是精确控制其温度、湿度等并要求控制在一定范围。
机房空调具有高显热比、要求大风量。
为达到所需空气参数,空调系统由制冷循环和空气循环两个循环部分组成,制冷循环主要分为水冷和风冷两类。
下面我们就通过系列动图,来了解下机房空调的制冷循环和空气循环。
Pt.1制冷循环原理制冷循环由压缩过程、冷凝过程、膨胀过程、蒸发过程组成。
就是利用有限的制冷剂在封闭的制冷系统中,反复地将制冷剂压缩、冷凝、膨胀、蒸发,不断的在蒸发器处吸热汽化,进行制冷降温,将热量从室内搬运到室外。
所谓水冷和风冷的区别,其实就是与水或者空气进行热量交换的区别。
制冷循环Pt.2空气循环2.1 送风方式末端的送风方式常规分为上送风方式,风管送风方式和地板下送风。
上送风方式风管送风地板下送风2.2 典型布置为了优化气流和进一步提升冷却,采用约束送风是比较常用的通风并划分冷池的一种方式,冷热通道分离,如下图。
冷热通道分离除此之外,为了降低气流输配距离,还有行间空调和柜级空调。
传统的房间级空调到微模块的演变部分数据中心也会采用顶置空调,采用热通道封闭方法,进一步缩短气流循环距离,安装顶置空调的放置方式,可以分为卧式和立式。
卧式顶置空调立式顶置空调为了进一步降低气流输配距离,部分数据机房也会采用柜级冷却方式,如热管背板。
柜级空调Pt.3机房风冷系统这是最传统的冷却方法,空调由内机和外机通过氟管路连接而成,内机由压缩机、膨胀阀和蒸发器等组成,可以实现制冷和气流输送等功能,外机则用来散热。
风冷制冷原理常规采用定速涡旋压缩机制冷,少量采用数码涡旋或者变频涡旋压缩机;风冷室外机安装在室外或楼顶,内外机距离有限制:常规不高于室内机20米,不低于室内机5米,室内外管路长度推荐小于60米,超出需要延长组件和措施。
风冷机房空调典型结构3.1 适合场景风冷空调相互间独立,无单点故障,特别适合中小型数据中心,当输送气流距离较短时,可以单侧布置,当输送距离较远时,采用双侧布置,如图6。
恒温恒湿艾默生空调系统说明
空调系统说明1、系列描述描述:机组是基于艾默生全球研发与设计平台的高端机组,针对全球销售,全球同步上市高可靠性、高灵活性、全寿命成本产品系列完备,具有风冷、乙二醇冷、水冷和冷冻水等机型制冷量范围宽,风冷、水冷、乙二醇冷机组20kW~100kW,冷冻水机组28~151kW应用范围:中、大型交换机房和移动机房计算机房和数据中心(IDC)高科技环境及实验室工业控制室和精密加工设备标准检测室和校准中心UPS和电池室生化培养室医院和检测室高适应性:多项节能设计多种送风方式,满足不同气流组织需求多种冷却方式,包括风冷、水冷、乙二醇冷却及冷冻水等,有利于适应现场的实际条件适应R22、R407C等不同冷媒多种监控方式风冷冷凝器提供适合不同温度环境(包括低温启动)的配置风冷方式提供超远安装距离和超高落差的方案2、系列数据下送风风冷机组技术参数3、机组的特点●高可靠性、高节能性、全寿命低成本同等制冷量条件下,占地面积最小。
侧面及背面不需要维护空间,前面只需要600mm 维护空间可拆卸后搬运,保证重新组装与整机无差别,适合特殊场地搬运(如利用小电梯或狭小通道)艾默生Copeland高效涡旋式压缩机,直接适合环保制冷剂(R407C)。
自适应风机系统,满足不同机外余压需求大面积V型蒸发器,快速除湿设计,确保节能独特的高效远红外加湿系统,加湿速度快,适应恶劣水质,低维护量全中文图形显示屏iCOM强大的群控与通讯功能4、机组的设计风冷系统的室内机由压缩机、蒸发器、加热器、风机、控制器、远红外加湿器、热力膨胀阀、视液镜、干燥过滤器等主要部件组成。
水冷系列还包括高效板式换热器、水流量调节阀。
室内侧制冷系统和水系统中可能涉及维护、更换的器件全部采用易拆卸的Rotalock连接方式,使维护更方便。
PEX风冷机组整机性能体现了高可靠性、高灵活性、高节能率、全寿命低成本。
PEX可靠性充分体现在:iCOM智能控制系统;Copeland涡旋压缩机;自适应风机系统;远红外加湿系统;全调速低噪声冷凝器等PEX高灵活性、高节能率充分体现在:iCOM智能控制系统;自适应风机系统;远红外加湿系统;全调速低噪声冷凝器;占地面积小;可拆卸搬运,全正面维护;可直接应用环保制冷剂等PEX全寿命成本充分体现在:iCOM智能控制系统;Copeland涡旋压缩机;自适应风机系统;V型蒸发器;快速除湿系统;远红外加湿系统;全调速低噪声冷凝器等采用真正的模块化设计思路。
海悟精密空调说明书
海悟精密空调说明书海悟机房精密空调,是专门针对大中型IDC计算机机房、通信机房、设备间等应用场所设计的恒温恒湿精密空调产品,旨在保证敏感设备、工业过程设备、通信设备和计算机等设备拥有一个合理的运行环境,机组可选+余种冷却方式,可满足各种类型的产品应用需求。
海悟机房精密空调机组可采用模块化设计,具备出众的节能性、的可靠性。
具备业界/优先/的智能控制技术、反应灵敏、快速组网等功能。
出众的节能性机组经过优化结构设计,配置多种节能技术设计,具备高能效比、先热比、耗电量低等特点大容量机组采用U型蒸发器,以提高单位体积内的蒸发器的换热面积,换热更充分,能效更明显。
过滤网采取贴合蒸发器布置,增大过滤网面积、减小过滤网风阻,降低了风机的运行功率,过滤更有效。
机组智能群控功能,可依据实际运行情况控制运行机组数量,有效避免竞争运行,减少浪费,实现按需制冷节能有效。
可靠性机组采用经过优化配置的框架式结构设计,具有结构强度高、抗震性能优异、机身结构合理等特点。
选配精选部件:机组零配件均采用严格的供应标准,供应商必须为行业知名品牌,关键零配件须有稳定的质量表现,性能可靠高。
机组电控部分采用强弱的分离的优化设计方式,布局更加合理,强弱电互不干扰,运行更加可靠。
机组各部件布局经过了周密的布置,在保证可全正面维护的同时,将维护相对频繁的部件设计布置于极易操作的位置,设计非常人性化。
机组具备恒温恒湿功能,温度控制精度可达+1°C,相对湿度控制精度可达+5%。
智能控制技术机组标配RS485智能通讯接口,并且兼容Modbus协议和电总协议(YD/T1363.3)。
通过智能通讯接口,机组可接入动环监控、DCIM、BMS、远程监控系统等。
网络访问:机组可选配TCP/IP通讯卡,实现SNMP协议通讯和通过网络IP地址直接访问的功能。
无缝接入物联网:机组采用了具备微处理器的智能控制器,可作为智能终端向上接入物联网。
先进的负载跟随技术:通过采集每个设备的数据来实时监控整个机房的热负荷的变化情况并预测其变化趋势,控制投入运行的机组数量,实现整个机房的总制冷量输出跟随负载变化的功能。
精密空调工作原理
精密空调工作原理
精密空调是一种应用广泛的空调设备,它在医疗、科研、电子、通信等领域有
着重要的应用。
那么,精密空调是如何工作的呢?接下来,我们将详细介绍精密空调的工作原理。
首先,精密空调的工作原理主要包括空气循环、温度控制和湿度控制三个方面。
在空气循环方面,精密空调通过内置的风机将室内空气吸入,经过过滤和净化后再重新送入室内,从而保持室内空气的清新。
在温度控制方面,精密空调通过控制制冷剂的流动和压缩来实现室内温度的调节,确保室内温度的稳定。
在湿度控制方面,精密空调通过控制蒸发器的温度和湿度,有效地控制室内湿度,保持室内空气的干燥。
其次,精密空调的工作原理还涉及到一些关键的部件,如压缩机、冷凝器、蒸
发器和膨胀阀等。
压缩机是精密空调中最重要的部件之一,它通过压缩制冷剂来提高其温度和压力,使其能够吸收更多的热量。
冷凝器则负责将高温高压的制冷剂冷却成液态,释放热量到室外。
蒸发器则通过蒸发制冷剂来吸收室内热量,从而降低室内温度。
膨胀阀则用来控制制冷剂的流量和压力,确保制冷剂能够正常循环。
最后,精密空调的工作原理还需要考虑到室内外环境的影响。
室内外温差、湿
度变化、风速等因素都会对精密空调的工作产生影响,因此在实际应用中需要对这些因素进行合理的调节和控制,以确保精密空调能够正常、稳定地工作。
总之,精密空调的工作原理涉及到空气循环、温度控制、湿度控制和关键部件
的协同作用,同时也受到室内外环境的影响。
通过对精密空调工作原理的深入了解,我们能够更好地使用和维护精密空调设备,确保其长期稳定地工作,为各行各业提供良好的环境条件。
山特精密空调一体机架空调用户手册说明书
客服热线:400-830-3938/800-830-3938Rack Type Air Conditioner User Manual 一体机架空调用户手册产品防伪为了切实保障您的用电安全,帮助您购买到真正的山特精密空调,请注意以下事项:1. 认准山特注册商标:、、、、。
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版权所有© 2020山特电子(深圳)有限公司1.1F OREWORD (1)1.2A IR CONDITIONER DESCRIPTION (1)1.2.1Principles of function (1)1.2.2Operating Conditions (1)1.3S TANDARDS (2)2.SAFETY NOTICES (2)3.INSTALLATION AND OPERATION (2)3.1M ECHANICAL INSTALLATION (2)3.2E LECTRICAL INSTALLATION (3)3.3P OWER-ON STEPS (4)4.SYSTEM FUNCTION INTRODUCTION4 4.1C OOLING (4)4.2H EATING (O PTION) (5)4.3D OOR ALARM (5)4.4C OMPONENT CONTROL MODE (5)4.5U NIT SEQUENCING CONTROL (OPTION) (5)4.5.1T IME S WITCHING (5)4.5.2T EMPERATURE SWITCH (5)4.5.3B OTH WORKING WITH HIGH TEMPERATURE (5)4.5.4D ISTURBANCE SWITCHING (5)4.6S ELF TESTING (6)4.7H YDROGEN DISCHARGING/EMERGENCY FAN (OPTION) (6)4.8A LARM (6)4.9U NIT MENU STRUCTURE (7)4.9.1Operation interface (7)4.9.2Menu structure (7)5.MAINTENANCE (8)5.1D AILY MAINTENANCE (8)5.2C OMPRESSOR MAINTENANCE (8)5.3C OMMON FAULT (9)1.简介 (15)1.1前言 (15)1.2空调器描述 (15)1.2.1工作原理 (15)1.2.2运行条件 (15)1.3符合标准 (16)2.安全注意事项 (16)3.安装和操作 (17)3.1空调器机械安装 (17)3.2电气安装 (17)3.3开机步骤 (18)4.系统功能介绍 (18)4.1制冷功能 (19)4.2制热功能(选配) (19)4.3门禁功能 (19)4.4器件控制模式 (19)4.5双机切换控制(选配) (19)4.5.1定时切换 (19)4.5.2温度切换 (19)4.5.3高温同开 (19)4.5.4故障切换 (20)4.6自测 (20)4.7排氢/应急风扇(选配) (20)4.8故障 (20)4.9机组菜单结构 (21)4.9.1操作界面 (21)4.9.2菜单结构 (21)5.维护 (22)5.1日常维护表 (22)日常维护表 (22)5.2压缩机维护 (22)5.3故障及恢复措施 (23)常见故障及恢复措施 . E RROR!B OOKMARK NOT DEFINED.6.产品有毒有害物质申明 (29)附录1.维修保证 (30)附录2.合格证 (31)Introduction1.1 ForewordNote: All of the operations of this product shall be performed by professional engineers and technicians.This manual can only be used to guide the installation and operation of EF series of industry cabinet air-conditioners. The manual content includes the functional description and regular maintenance of the unit. In this manual, the safety tips and warning signs are described as follows:DANGER!If the measures described in the following are not strictly observed there is danger to life and health.HAZARD!If the measures described in the following are not strictly observed there is danger to life and health due to electrical shock.CAUTION!If the measures described in the following are not strictly observed material damage may be caused.1.2 Air conditioner descriptionThe EF series outdoor cabinet air conditioner is a cooling product developed for cabinet. This air conditioner’s frequency can be regulated. It has cooling capacity regulating function, and the fans can regulate speed automatically.Function Diagram 1.2.1 Principles of functionThe refrigerant is compressed by compressor (1) into high temperature and high pressure gas; To the condenser (3), and suctioned by the cooling fan (2) from the bottom part into outdoor air, where the heat is forced through the condenser (3) to spread to the surrounding environment in the air, and the refrigerant becomes into a liquid through the throttling element (4), the refrigerant pressure drops, and in the evaporator (6), the refrigerant absorbs the heat inside the control cabinet and evaporates; The hot air is suctioned by the evaporation fan (5) from inside the control cabinet, and through the evaporator, the air is cool and forced to discharge into the inside of the control cabinet. At the same time, the air inside the control cabinet is dehumidified.This series can be used a variety of installations.This is shown in the pictures below:Working Principle Diagram1.2.2 Operating Conditions⚫Power system220VAC±15%,50/60Hz⚫External cycle temperature:-40℃~ 50℃Note: Please read the nameplate parameters on the air conditioner carefully. The actual technicalparameters shall be subject to the nameplate name.1.3 StandardsStandard DescriptionGB/T17626.7-1998EMCGB4706.1Safety of household appliances or similar electric applianceGB4798.1Environmental conditions existing in the application of electric and electronic product –StorageGB4798.2Environmental conditions existing in the application of electric and electronic product –TransportationGB4798.3Environmental conditions existing in the application of electric and electronic product –Use2. Safety noticesThe following safety notices are to be observed in their entirety for the correct use of the equipment: 2.1 Transport⚫Keep the air conditioner in a horizontal state during transportation.⚫If the cabinet needs to be transported, please remove the air conditioner and pack itseparately before transportation.2.2 Storage⚫Storage environment should not exceed 70 °. ⚫Keep the air conditioner in a horizontal state during storage.2.3 Unpacking⚫Prior to and during unpacking make a visual inspection of the air conditioner to seewhether any damage has occurred duringtransport. Especially pay attention to looseparts,dents,visible loss of oil etc.⚫Any damage mast be reported immediately to the forwarding agent (follow the instructionsin“Rules For Damage Claims”).Moreover,thelatest ed ition of the “After sales Service Letterof Commitment”⚫Before disposing of packing material ensure that it does not contain any loose components.2.4 Installation ⚫The site for the enclosure, and hence the arrangement of the air conditioner, is selected so as to ensure good ventilation;⚫The location is free from excessive dirt and moisture;⚫The ambient temperature does not exceed +45℃;⚫The enclosure is sealed on all sides(IP54).Condensation will occur if the enclosure isleakage;⚫Air inlet and outlet are not obstructed on the inside of the enclosure;⚫The duct size outside the air conditioner cabinet should not be less than the limit value in the following figure.⚫Units are only fitted horizontally in thespecified position.Max. Deviation from the true horizontal:2°;⚫Losses from the components installed in the enclosure must not exceed the specificrefrigeration capacity of the air conditioneritself;⚫The customer must not modify the airconditioner in any way.Distance Diagram3. Installation and Operation3.1 Mechanical installationBefore the installation of air conditioner, the fitting surface of cabinet shall be properly opened withvent and screw hole, where the hole size shall refer to the appearance size figure as provided by the manufacturer.CAUTION!If the required cutouts are only made in the switch cabinet just before mounting of the air conditioner, make sure that swarf is not allowed to enter the device hood by using a cover sheet. Mounting:1) Insert the air conditioner into the cabinet alongthe guide rail direction.2) The installation flange of the air conditionerand the installation surface inside the cabinetare fixed, as shown in the figure below:Installation Diagram3.2 Electrical installationCAUTION!As the cabinet air conditioner is connected to the power supply via the circuit protection device, the appropriate circuit protection device and the power cable should be chosen according to the air conditioning nameplate and technical parameters.CAUTION!Too high voltage may lead to damage of cabinet air conditioner. Please follow the voltage requirement marked on the nameplate to switch on the air conditioner.CAUTION!In order to avoid any damaging effects, before turning on the power supply, the cabinet air conditioner must be reliably earthed.Note: The power input port identifier is subject to the specific unit screenprintingReferences to common (copper wire) selection: RatedCurrent≤5A≤10A≤15A≤25A Power linediameter1.0mm1.5mm2.5mm4mmConnecting interface (The power input terminal will be subject to application instructions)Connecting interface:Port DefinitionPowerinputL1/LL:220VAC power input cable L;L1:110VAC power input cable L L2/NN:220VAC power input cable N;L2:110VAC power input cable L PEGrounding wire of the airconditionerAlarm outputNC The first public alarm dry nod (NC) COMThe first public alarm dry nod(COM)NOThe first public alarm dry nod(NO)(Option)1The second public alarm dry nod(COM)(Option)2The second public alarm dry nod(NO) (Option)Signal input 3 N/A4Hydrogen discharge / emergencyfan dry contact (FG) (Option)5Hydrogen discharge / emergencyfan dry contact (NO) (Option)6Hydrogen discharge / emergencyfan dry contact (COM) (Option) 7Door open alarm input (option)8comm unicati on ports +RS485 communication ports (+)(Option)-RS485 communication ports (-)(Option)⚫Alarm output (option):The unit provides alarm output dry contact. Ifthere is no alarm, the dry contact is close.When there is alarm, the dry contact will open.Contact capacity: resistive load5A@30VDC/5A@250VAC.⚫Hydrogen discharge / emergency fan electricity connecting.(option):Note: Contact capacity: max load 2A@-48VDC; 8A@230VAC.➢Hydrogen discharge / emergency fan(AC input) connecting interface diagram;AC input connecting interface diagram➢Hydrogen discharge / emergency fan(DC input) connecting interface diagram;DC input connecting interface diagramDC input connecting interface diagram(FG:optional)3.3 Power-on stepsFirstly make sure the AC voltage is in accordance with the standard, and then close the power input switch. 30s later the internal cycle fan of the unit will be started. After delay time about 3min, the unit select operation mode according to the unit’s. 4. System function introductionAir conditioner running is automatically controlled completely according to the temperature inside the cabinet, and through the inner loop temperature sensor, the controller detects the cabinet return air temperature and the set point for judgment, to control the work of compressor or the fan.4.1 CoolingCooling stop point=cooling start point-cooling sensitivity. When the cabinet internal temperature exceeds the cooling start-up point, the cooling will be started; when the cabinet internal temperature is lower than the cooling stop point, the cooling Parameter Default value Setting rangeCoolSP 25℃[15~50]Cool△T 5℃[1~10]INHT 65℃[20~80]stops.Setting point description:CoolSP:Point when cooling starts.Cool△T:Temperature control sensitivity.INHT:Internal high Temp. alarm point.CAUTION!For the reliable operation of the unit and the maximum energy efficiency, it is recommended that the users should not randomly change the temperature set point. The above set point is not on behalf of the factory settings.4.2 Heating (Option)Heating stop point=heating point+heating sensitivity. When the temperature inside the cabinet is lower than the heating start-up point, the heating will start; when the temperature inside the cabinet is higher than the heating stop point, the heating will stop.Parameters Default value Setting range HeatSP 0℃[-5~15]Heat△T 10℃[1~15]Setting point description:HeatSP:Point when heating starts.Cool△T:Temperature control sensitivity.CAUTION!For the reliable operation of the unit and the maximum energy efficiency, it is recommended that the users should not randomly change the temperature set point. The above set point is not on behalf of the factory settings.4.3 Door alarmTo avoid an increase in condensation, a door operated switch should be used which will switch the air conditioner off when the switch the air conditioner off when the enclosure door is opened. After judging whether the cabinet door is opening or not by the sign sent by the door magnetic switch ,the air conditioner will alarm and stop. CAUTION:When door opened, the door magnetic switch will be triggered to shut down the air conditioner after one minute. After door closed, the door magnetic switch will be released, then the air conditioner will start work after three minutes when the temperature inside is higher than the set point.4.4 Component control mode1) Control modern of internal fan:The inner fan runs in normal speed when system runs normally.2) Control mode of external fan:Air circulation mode: The external fan stops.Cooling mode:The external fan’s running speed depends on the condenser’s temperature. The higher the temperature is, the higher the fan speed is; the lower the temperature is, the lower the fan speed is.3) Control mode of compressor:Air circulation mode: Compressor stops.Cooling mode: The compressor’s running speed depends on the temperature differences between return air and setting value. The higher the difference is, the higher the compressor speed is; the lower the difference is, the lower the compressor speed is.4.5 Unit sequencing control(option)The equipment has linkage function including time switching, disturbance switching, high temperature switching.4.5.1 Time SwitchingTwo air conditioners switch as setting time.4.5.2 Temperature switch1) When cabinet temp reach the setting point cooling point only one air-con will work. When temp lower than cooling stop point, the air-con stops working.2) When cabinet temp reach the setting point high temp point, two air-cons will work together. When temp lower than (high temp point - sensitivity), one air-con stops working, only one air-con will work alone.4.5.3 Both working with hightemperatureWhen one appears high temperature alarm, the other will work at the same time. If high temperature alarm is cleared, one air conditioner will be closed, it will recover to time and temperature switching status.4.5.4 Disturbance switching1) When one air conditioner has a problem, the other will start immediately.2) If the fault that is come up in the switching time is cleared, it do not switch to other until time switch is finished.3) If the fault is not cleared, the other will work all the time.4.6 Self testingThe unit provides the self testing function for on site test and it will automatically goes to self-testing procedure if choosing self-testing function in the system function menu, the procedures are as below:1) If the compressor doesn’t stop, stop thecompressor.2) The internal fan runs for 60 seconds.3) The external fan runs for 60 seconds.4) The compressor runs for 60 seconds with lowlimit speed, meanwhile the external fan runs with 50% full speed.5) The compressor runs for 60 seconds withupper limit speed, meanwhile the external fan runs with full speed.6) If configured with heater, starts heater andruns for 120s.7) If configured with hydrogen discharging fan,starts the fan and runs for 120s.8) The compressor, internal fan & external fan,electric heater, hydrogen discharging fan stops.9) Self-testing procedures finished, the unit worksaccording to the normal logic.4.7 Hydrogendischarging/emergency fan(option)Discharge hydrogen at regular times: according to the requirement for environment inside the cabinet, the hydrogen discharging fan realizes automatic cycle hydrogen discharging and forced ventilation. The interval time of each automatic cycle hydrogen discharging is 24 hours and the discharging time is 5 minutes.2) Forced ventilation:when the compressor does not have cooling capacity (including compressor failure, power failure), the temperature inside the cabinet is higher than the start up point (emergency point + sensitivity) of emergency fan , start the emergency fan.4.8 AlarmThe cabinet air conditioner provides the following alarm information. Please refer to table for the setting point.Diagram for alarm triggeredIf the alarm hasn’t been recovered, t he alarm information will be still on, until the alarm has been eliminated. And you can check the alarm statistics through entering the alarm menu shown as Figure.Sensor Failure4.9 Unit menu structure4.9.1 Operation interfaceThe unit controller adopts the 96x32 LCD, which contains 7 buttons for the setting. The operation interface is as shown in the following figure:ON/OFF:ON/OFF button (press the button 5s), this can be used to turn on/off the unit.: Up button, which is used to increase the setting value or select the previous record/menu.: Down button, which is used to decrease the setting value or select the next record/menu. 4.9.2 Menu structure: Left button, which is used to select the previous bit of the data.: Right button, which is used to select the next bit of the data.ENTER: ENTER button, which is used to confirm the entry.ESC: Quit button, which is used to return to the previous page menu.If there is no keyboard operation for consecutively 60s under any interface after start-up, it will automatically return to the normal display interface. When any button is pressed after the system is powered up, the backlight will turn on. If there is no keyboard operation for consecutively 60s, the backlight will be off.The factory default operation password of the unit is “0001”. To change it, you need to press ENTER on the normal display interface to enter the password input interface, press the LEFT button or RIGHT button to select the bits for change, and press the UP/DOWN button to change the relevant digits, and finally press ENTER button to confirm the change. If the password is incorrect, the interface will display the error message, and the unit setting cannot be changed. If the password is correct, you can enter the main menu and edit the unit setting.Remarks:InT: Internal return temperature sensorTp: Evaporator coil temperature sensorTe: Compressor exhaust pipetemperature sensorCond: Condenser coil temperaturesensorUnit menu structureNote: This diagram is unit menu structure, not the real factory setting.中文EnglishON/OFF ENTER ESC5. MaintenanceTo ensure the normal operation of the airconditioner, please perform regular maintenance for it by referring to Table 5.1.Hazard!All the maintenance should be performed by qualified professionals. Please disconnect thepower and communication & alarm output cables of the air conditioner before any maintenance and do not reconnect them until the maintenance is completed.5.1 Daily maintenanceDaily maintenance table5.2 Compressor maintenanceWhen the compressor is faulted, the solution is replaced with new unit.DISPOSAL :Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary.City Trash CanCheck item Step descriptionMaintenance cycle Wiring Visually check if the wiring is looseOne year Fan abnormalities Turn the fan to check if it is smooth and if there is any abnormal noiseOne year Drainage pipe Visually check if the drainage mouth is blockedSix monthsCondenser Check the cleanness of the condenser and clean it with compressed airSix monthsFilterCheck visually and clean. If there is dustaccumulation, it can be blown or washed and driedSix months5.3 Common faultCommon fault and recovery measure.can not work5.4 Charge RefrigerantUnits sold outside mainland China do not contain refrigerant. Please refer to the following operations to charge refrigerant on site.1 Tools PreparationTable 5-1Tools preparationTool Illustration FunctionScrewdriver ⚫Dedicated screwdriver is used to remove the anti-theft screws.⚫Flat-blade screwdriver is used to remove the connecting wire from the controller.⚫Phillips screwdriver is used to remove screws from other parts.Diagonal pliers Used to process cables on site and remove the fixed cable ties. Portable vacuumpumpUsed to vacuum on site.Pressure gauge Used to monitor system pressure, maintain pressure, and charge refrigerant for use.Refrigerant R410A refrigerant.Electronic scale Used to charge refrigerant and monitor the weight of the refrigerant charged. Protective gloves Wear gloves when charging refrigerant and vacuuming.Goggles Used to protect the eyes.2 Disassemble the Unit⚫Figure 5-1Disassemble the unitStep 1 Use a small flat-blade screwdriver to remove the air conditioner power cables (L,N, PE). See A in Error! Reference source not found..Step 2 Use a small flat-blade screwdriver to remove the air conditioner signal lines(RS485+, RS485-). See B in Error! Reference source not found..Step 3 Remove the signal line fixed buckles and the drainage pipe binding ties. See C in Error! Reference source not found..Step 4 Open the front door of the cabinet and use a Phillips screwdriver to remove thefour installation screws of the air conditioner. See D in Error! Reference sourcenot found..Step 5 Grasp the two handles on the front panel of the air conditioner and slowly pull out the air conditioner. See E in Error! Reference source not found..Step 6 Use a flat-blade screwdriver to remove the screws of the upper cover and remove the upper cover. Find the refrigerant charging port, as shown in F in Error!Reference source not found..CAUTIONThe charging port is divided into a high-pressure charging port and a low-pressure charging port, and therefrigerant is charged from the low-pressure port. See G in Error! Reference source not found..3 Charge RefrigerantStep 1 Connect the vacuum pump.Use a pressure gauge to connect the high-pressure charging port (red pipe) and low-pressure charging port (blue pipe) of the air conditioner, and the middle pipe is connected to the vacuum pump.⚫Figure 5-2Connect to the vacuum pump(1) Low pressure gauge (2) High pressure gauge (3) Zero adjustment screw(4) Low pressure valve (5) Sight window (6) High pressure valve(7) Low pressure side interface (8) High pressure side interface (9) Vacuum pump or refrigerantinterfaceStep 2 Use a vacuum pump to vacuum the refrigeration system.After confirming that the pipeline connection is completed, turn on the vacuum pump to start vacuuming. Thevacuum degree of the system is required to be below 35Pa.⚫Figure 5-3Power on the vacuum pumpStep 3 Maintain pressure on the system.After the vacuum is completed, power off the vacuum pump, close all the pressure gauges and tighten theconnection between the pressure gauge and the vacuum pump. Keep the pressure of the system for 20-30 minutes and observe whether the pointer of the pressure gauge does not move. If the value of the pressure gauge needleremains unchanged (maintained at -0.1MPa), it proves that the system is well sealed and can be filled withrefrigerant.⚫Figure 5-4Maintain pressureStep 4 Refrigerant charge.After the system pressure is maintained, remove the vacuum pump from the pipeline, and connect the pipeline to the refrigerant tank to charge the refrigerant.1. Move the gas pipe connecting the vacuum pump to the refrigerant tank and tighten it, thenloosen the connection of the middle pipe of the pressure gauge by 4-5 turns.⚫Figure 5-5Connect to the refrigerant tank2. Turn on the switch of the refrigerant tank, let the gas pour into the pipe and rush out from theconnection. The process lasts for about 10 seconds, and then tighten the pressure gaugeconnection so that the air in the pipe is discharged to the outside.3. After exhausting the air from the pipeline, the refrigerant charge is started. Please turn therefrigerant tank upside down when charging, and you must use an electronic scale to ensurethe quality of the refrigerant charged.⚫Figure 5-6Charge refrigerant4. After the refrigerant charging is completed, close the valve on the low pressure port side of thepressure gauge, do not remove the pipeline connection for the time being, and perform thepower-on operation and refrigeration operation.⚫Figure 5-7Close the low pressure charging value4 Power On and Test the Air ConditionerPower on the unit and adjust the cooling point of the unit to below the temperature detected by the indoor sensor. Run the unit for half an hour to see if the cooling of the unit is operating normally.⚫When the ambient temperature reaches the cooling point of the air conditioner, the air conditioner will automatically enter the cooling state when the air conditioner ispowered on for 3 minutes.⚫If the ambient temperature does not meet the cooling conditions, you can turn on the load to make the air conditioner enter the cooling state.After the unit is operating normally, quickly remove the high and low pressure connections. A small amount of refrigerant will be sprayed out during the dismantling process, which is normal. Screw the bonnet back to complete the refrigerant charging.⚫Figure 5-8Remove the refrigerant charging port connection5 Reinstall the Air Conditioner Into the CabinetLift the air conditioner and slowly push it into the cabinet from the front, avoiding the air conditioner limit blocks on the left and right sides of the cabinet until the mounting flange is close to the cabinet column, and then install the air conditioner in the reverse order according to 2 Disassemble the Unit.1. 简介1.1 前言注意:任何针对本产品的操作必须由专业的工程技术人员进行。
机房精密空调工作原理
机房精密空调工作原理
机房精密空调是一种专门用于机房环境的空调系统。
它采用了先进的技术和设计,具有精确的温度控制和湿度控制能力,旨在为机房提供稳定的温度和湿度环境,以保证机房内设备的正常运行。
机房精密空调的工作原理主要包括以下几个方面:
1. 空气循环系统:机房精密空调通过内置的风机将室内空气吹入机房,形成循环。
空调系统内部设有空气过滤器,可以过滤空气中的灰尘、污染物和微粒,保证机房内的空气质量。
2. 温度控制系统:机房精密空调采用先进的温度控制技术,通过室内温度传感器实时监测机房内的温度,并将这些数据反馈给控制系统。
控制系统会根据设定的温度范围,控制冷凝器和蒸发器的工作,以调节机房内的温度。
3. 湿度控制系统:除了温度控制外,机房精密空调还能够控制机房内的湿度。
系统内置的湿度传感器可以实时监测机房内的湿度水平,并将数据传送给控制系统。
控制系统会通过调节湿度控制装置,如加湿器或除湿器,来控制机房内的湿度。
4. 压缩制冷循环:机房精密空调采用了传统的压缩制冷循环技术。
系统内的压缩机会将制冷剂压缩成高温高压气体,然后通过冷凝器散发热量,使气体冷却成高压液体。
高压液体进入蒸发器后,放出热量并蒸发成低温低压气体,从而吸收室内热量并降低温度。
机房精密空调通过以上工作原理,能够精确控制机房的温度和湿度,保障机房内设备的正常运行和长期稳定性。
这种空调系统在大型数据中心、服务器房、通信机房等对温度和湿度要求较高的场所得到广泛应用。
美的 ● MA 系列小型精密机房用空调机组 技术手册说明书
美的 ● MA 系列小型精密机房用空调机组技术手册请妥善保管本用户手册使用前请仔细阅读本手册获取更多资料微信搜索蓝领星球目 录1 第一章 简 介 (3)1.1 机房应用环境要求 .......................................................................................................................................... 3 1.2 MA 系列小型机房空调 ..................................................................................................................................... 3 1.3 机房空调与民用空调的区别 .......................................................................................................................... 3 2 第二章 产品介绍 . (4)2.1 型号说明 .......................................................................................................................................................... 4 2.2 工作原理介绍 .................................................................................................................................................. 5 2.3 主要特点 .......................................................................................................................................................... 5 2.4 标准部件 . (6)2.4.1 室内机主要标准件 ............................................................................................. 错误!未定义书签。
精密空调的工作原理
对于空调这种司空见惯的家电产品,大家可能都是比较熟悉的,但是如果说到精密空调,又有多少朋友能够清楚呢?其实精密空调是一种工业性空调,与家用空调有一定的区别。
下面我们就来了解一下精密空调是什么意思,同时对精密空调的工作原理也来做一些认识。
精密空调是什么意思1、精密空调又叫恒温恒湿空调,恒温恒湿机,是对环境的温度和湿度进行准确控制的精密空调。
它不仅是一种简单的制冷系统,结合精密的微处理控制系统它更可对环境温度、空气洁净度和空气分布进行综合控制。
拥有空气过滤装置及电极蒸气加湿器,电加热器。
2、精密空调的生产技术要高于普通家用空调,因为精密空调是24h工作的,机器需要很好的连续工作稳定性,内部构造设计,零部件的选型都需要坚固实用,如不然,就会出现故障。
家用空调不是24h开机,所以工作强度要小一些。
3、精密空调是针对现代电子设备机房设计的空调,它的工作精度和可靠性都要比普通空调高得多。
它的风力大,例如,计算机设备及程控交换机产品等,由大量密集电子元件组成。
要提高这些设备使用的稳定及可靠性,需将环境的温度湿度严格控制在特定范围。
精密空调可将机房温度及相对湿度控制于正负1摄氏度及5%之内,从而大大提高了设备的寿命及可靠性。
精密空调的工作原理1、精密空调系统的三个压力即:平衡压力、高压压力、低压压力;这三个压力是空调维修的重要参数。
三个压力是制冷剂R22在空调管路中循环在不同位置所对应的压力,由于R22是在气液之间循环变化的,伴随着吸热和放热,所以外界环境的温度对其有明显的影响。
一般情况下,环境温度高,压力值变大。
环境温度低,压力值变小。
2、精密空调在冬季制热环境和制冷工况相差太大,外环境温度又低,所以三个压力会有较大的变化,以空调使用环境下限温度5℃作为研究分析的参考。
为达到理想的蒸发吸热效果,制冷设计空气作为载冷物质时,蒸发标准温差选取10℃,所以蒸发温度应为-5℃,对应压力为0.32 MPa。
3、由于室外机环境为5℃,其理想蒸发温度为-5℃,而外机盘管化霜一般在-6℃左右,所以冬季越冷制热效果越差,为了至大限度在低温下吸收热量,通过制热辅助毛细管降低蒸发压力,从而降低蒸发温度,因此,制冷状态下的低压不再是平衡压力的一般了,而是偏小一点,所以制热平衡压力大约0.7MPa。
