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盘管式蓄冰槽预制施工技术

盘管式蓄冰槽预制施工技术
本文针对某工程中采用的盘管式 蓄冰槽的施工进行论述,该工程蓄冰 槽共有10个,分别位于地下4层和地 下6层;每个槽体内布置12台(大槽 为16台)蓄冰盘管,双层叠放,通过 该工程蓄冰槽施工可以很好的为相关 蓄冰槽施工提供参考。
1盘管式蓄冰槽概况
盘管式蓄冰槽一般依据《钢制 常压容器》(NB47003)进行设计, 为使蓄冰槽长期稳定运行,槽体采用 SUS304L不锈钢(奥氏体不锈钢)材 质,冰槽底部保温采用两层50mm厚 聚氨酯板错缝搭接,聚氨酯板间铺设 100mm厚枕木,最后在上面铺设50mm 厚钢丝网砂浆。蓄冰槽四周采用聚氨酯 现场发泡100mm。顶板采用80mm厚的 EPS复合保温板,复合保温板敷设在冰 槽顶部网架上。冰槽外保护层为0.5mm 厚的乳白色形彩钢瓦楞板。
(1 )本工程奥氏体不锈钢板材的 安装尽量扩大预制量,在预制工厂进 行预制,力求做到整体安装。
(2 )在现场加工预制时,应在
专用的场地进行,严禁和加 工预制碳素钢的场地混用。
(3 )在现场切割奥氏 坡口 名称
体不锈钢方管时,采用专用 的砂轮机磨割;坡口加工采 V型
坡口
用专用的电动坡口机进行加 工,切削速度一般采用碳素 钢的40% -60%,切削刀具用高速 钢制作。
2施匸关键技术
2.1施工工艺流程 施工工艺流程见图4。
图1施工工艺流程
2.2基础验收 2.2.1核对基础检查记录
在蓄冰槽安装前,必须按土建基 础交接文件对基础表面尺寸进行检查,
仔细核对基础及施工单位记录检查,合 格并办理交接检查记录后方可安装。 2.2.2基础表面尺寸检查
(1 )中心线坐标允差士 20mm; 中心坐标允差士 10mm;
基础的两个互相垂直的直径方向 各设置一个沉降观测点,总共4个沉 降观测点。 2.3底部绝热层施工

动态蓄冰盘管

动态蓄冰盘管

动态蓄冰盘管日照百货大楼莒县新玛特商城中央空调方案技术经济分析冰储冷空调与常规电制冷空调比较:1.综合初投资节约27.5万元;2.运行费用节约58.4万元/夏季;3.空调机房配电容量减少500KW;4.空调机房面积增加60㎡。

节约=创造财富蓄冰空调,是利用电网的电价差,在夜间(23:00-7:00)电价低时开主机制备冷量,并以冰的形式储存起来,在白天电价高时将冰融化释放冷量,以供空调之需,从而大幅度降低空调运行费用的一种先进空调技术。

蓄冰空调具有如下优点:1.利用峰谷电价差,降低空调运行费用40%~50%;2.平衡电网峰谷差,减缓电厂和输变电设施的建设;3.降低制冷主机、冷却塔及冷却水泵容量,减少空调机房总配电容量,减少变配电设施的投资;4.制冷主机满负荷平稳运行,效率高;5.可实现大温差,低温送风,降低空调末端设备投资,提高空调品质;6.具有应急功能,提高空调系统可靠性。

日照市峰谷电价明细表1.409-0.3315=1.0775元/ KWh电业局电价免费咨询电话:95598真诚为您服务――共创节约型社会!第一章工程概况日照百货大楼莒县新玛特商城,空调面积36000㎡。

夏季空调尖峰冷负荷为432万大卡(5040KW),冬季采暖热负荷为2160KW。

典型设计日逐时冷负荷图如下时间第二章冰蓄冷方案一.冰盘管简介冰盘管(Ice-on-coil) ——有内循环的蓄冰盘管技术(Dynamic Ice)蓄冰盘管主要特点:1、盘管采用纯质高密度聚乙烯(HDPE)材料,标准冰槽槽体,内部流量分配接头全部采用弹性接头,无焊缝,整体设计使用寿命50年;2、独特的再冷却盘管加不锈钢鳍片,有效提高制冷主机结冰温度,提供1.1-4℃的低温冷水,实现大温差冷冻水供水系统;3、单个槽内的多回路卤水分布管,发生泄漏时可不停机检修;4、专门设计的硬密封接头机构,可耐压超过12公斤,方便现场检修。

二、冰蓄冷空调系统主要设备选型1、双工况主机选型2、蓄冰装置选型及性能蓄冰盘管:选用3台型号Dyn-1400动态蓄冰盘管。

冰蓄冷技术

冰蓄冷技术
冰媒并联系统 系统的空调器中有两个盘管 ,用电“谷值”期间 ,制冷机冷媒送入蓄冰 器制冰。空调期间 ,制冷机冷媒送入空调器一个盘管直接蒸发 ,而蓄冰 器中的冰水则送入另一个盘管 ,蓄冰器与空调器中的冷媒回路是并联的.
压缩机辅助系统 系统全部冷媒均进入蓄冰器 ,这种系统不仅夜间制冰 ,在空调高峰期间 也是一边融冰 ,一边继续制冰 ,这种系统初投资最省 ,但因昼夜制冰 ,始 终维持较低的蒸发温度 ,故耗电量较大 ,与以上两种方法相比 ,因其系 统简单 ,初投资省而得到最普遍的青睐与应用。
案将获得更大经济效益。 6.乙方案由于夜间制冰有可能提供 18:00~24:00部分房
间需要之冷量。
9.3冰蓄冷在唐山百货大楼空调系统改造中的应用
设计资料
唐山百货大楼建筑面积 40 000m2 ,分为超级商场和条式楼两部 分。 超级商场面积 8000m2,地下 1层 ,地上 4层 ,集中空调系统于 1 992年建成 ; 条式楼面积 32000m2,地下 1层 ,地上 5层 ,集中空调系统于 1 996年建成。 大楼空调用电占大楼总用电近 70 %,原有变压器严重超负荷运 行,不得不限电运行或限制其他项目发展。
方案乙:
1: 2台双工况离心式冷水机组。 2: 50只高灵蓄冰桶 3: 2台日间空调工况时运行的冷冻水泵 4: 2台 1~ 2 0层冷冻水供水泵 5: 2台夜间制冰、日间融冰供冷水泵 6: 2台 2 1~ 3 3层冷冻水供水泵 7:日间空调运行板式换热器 8:中间板式换热器 9:高区中间板式换热器 1 0:末端设备。
直接蒸发冰蓄冷系统
氟里昂直接蒸发式蓄冷是由冷媒管道直接制造冰 ,盘管外表形成 50~75mm厚的冰层 ,日间供冷时 ,冰的熔解是由外至内 ,在夜间制 冷时这种溶解法内部的冰水很快结冰 , 或因上次未全部溶解而使冰 附在管外壁 ,这种蓄冰通过管道外表上的冰使冻水结成冰。这一制冷 方式需要控制冰的厚度不超过 50mm左右 ,否则因冰层热阻大 ,冷媒 的传热受到影响 ,导致机组自动停止或爆裂。另外对直接蒸发系统 , 当蒸发器结冰时 ,压缩机吸气温度较低 ,单位制冷量的耗电量增加。

蓄冰盘管制冰动态模拟

蓄冰盘管制冰动态模拟

: 过 程 ; 件通 过 了实验 验证 , 软 可供 蓄冰 系统 的选型 及 蓄冰设 备 的非标 设 计作参 考 。
关键 词 :蓄冰 盘管 ; 冰蓄 冷 ; 动 态模拟 ; 制冰
中 图分 类 号 :T 8 14 U 3.
文 献标 识 码 : A
文章 编 号 :0 6 8 4 (0 6)3 0 2 — 3 1 0— 4 9 20 0— 0 5 0


● ●
- _ _ ● ●
摘 要 :编 写 了盘 管蓄 冰动 态模拟 软件 , 通过 输入 蓄 冰 系统 的各设 备 参数 , 即可模 拟 蓄 冰整 个 : :


_ _ ● ● _ ● ● _ ● ● _ ● ● ● ● ● ● _ ● ● _ ● ● ● _ ● ● ● _ _ ● ● _ ● _ ● ● _ ● ● ● ● ● _ - ● ● ● _ ● ● ● _ _ ● - ● _ ● _ _ ● _ ● _ ● ● ● ● ● ● ●
降低 , 常水在 oc ̄ 通 ou不会马上结 冰 , 温度继 续下降 , 处于亚稳态 , 通常温度降至一 ℃左右结束 , 2 本换热过程
不 涉及到相 变 , 在一 般 的教科 书上 都能 找到 传热 模型 , 本 文 不再赘 述 。 ( ) 冷 消除 阶段 。水 温 降至 一 ℃左右 后 , 冷消 2过 2 过
冷 量不 变 即总 乙二醇 溶 液 与水 之 间 的 总换 热 量 不 变 , 根据传 热模 型 , 传热 温差 也 基本 不变 , 因此 乙二醇 出 口 温度也 会 随着水 温 的下 降而 下 降。 略热 损失 , 二醇 忽 乙
溶 液 离开 蓄 冰 盘管 的 温度 即为 制 冷机 的入 口温度 , 当

盘管式冰蓄冷系统施工技术

盘管式冰蓄冷系统施工技术

盘管式冰蓄冷系统施工技术【摘要】随着科学技术的发展,人们的生活生产水平不断提高,人们对建筑业的性能也提出了更高的要求。

在现代的建筑中,通常会应用到中央空调。

而随着中央空调的不断改进创新,冰蓄冷中央空调应运而生。

冰蓄冷中央空调不仅提高了空调的工作效率,并且还极大的降低了空调的运行成本。

冰蓄冷中央空调是通过对昼夜供电峰谷差的利用,制冷机组在也间进行制冰工作,而到了白天就进行融冰,从而实现了供冷的目的,这种方式极大的提高了空调的制冷效率,并且也节约了大量的电能。

因此,冰蓄冷中央空调在现代的建筑中倍受青睐。

本通过对冰蓄冷空调和现代建筑工程的研究,并对冰蓄冷空调的盘管式冰蓄冷系统施工技术进行了探讨,希望能够起到抛砖引玉的效果。

引言随着全球性的能源危机,人们对能源的节约意识逐渐提高,而在现代建筑中央空调的选用过程中,在考虑到空调的实用性和经济性的同时,还应该注重空调的节能效果。

在这一时代背景的要求下,冰蓄冷中央开空调应运而生,冰蓄冷中央空调的主要工作原理就是:通过利用昼夜供电的峰差,空调系统中的制冰机在晚上进行制冰,到了白天就可以进行融冰,从而达到供冷的目的,采用这种供冷方式,不仅有效提高了空调的制冷效率,而且也使空调节能得到了完美的体现。

在现代的建筑中应用冰蓄冷中央空调时,必须要应用合理的施工技术,才能保证冰蓄冷中央空调系统能够正常运行。

就目前冰蓄冷中央空调系统施工的实际情况而言,通常采用盘管式冰蓄冷系统施工技术进行施工。

本文从某实例工程的冰蓄冷中央空调施工出发,对盘管式冰蓄冷系统施工技术进行了深入研究,并对施工技术主要内容进行了详细的阐述,以供同行参考。

1、盘管式冰蓄冷系统施工技术的应用某工程基地呈矩形,且该工程基底的占地面积为27万m2,而建筑的总面积大概为31.7万m2,该建筑工程的外形酷似倒“Z”字形,并将该建筑工程分为了A、B、C、D、E、F、G、H、J共九个区域,该建筑工程主楼的高速为34.15m,并且有两层地下室,地上部分有6层,而该建筑主要是用来科研开发办公,根据估算,在建筑工程竣工过后至少有八千人在该建筑中办公。

冰蓄冷设备蛇形钢盘管与U形塑料盘管结构图

冰蓄冷设备蛇形钢盘管与U形塑料盘管结构图

冰蓄冷设备蛇形钢盘管与U形塑料盘管结构图对比
1、上方左侧为U形塑料盘管设备保温防水层做法及承载结构示意图;上方右侧为蛇形钢盘管等设备保温防水层做法及承载结构示意图
2、上方左侧为U型塑料盘管示意图上方右侧为蛇形钢盘管等设备示意图
3、上方左侧为U形塑料盘管设备模块化示意图;上方右侧为蛇形钢盘管设备整体内胆示意图
4、U形蓄冰设备外结构全部由热浸镀锌螺栓连接,没有焊接,两层HDPE高密度防水层,从材料根本上保证设备外壳的使用寿命。

换热盘管的专利材质、可灵活组装的模块化结构从技术上保证设备内胆的使用寿命。

5、上方左侧图中左边蛇形钢盘管和右边U形塑料盘管的结冰厚度示意,冰层越厚代表主机的出水温度需要越低,主机能耗越大。

上方右侧显示左边蛇形钢盘管和右边塑料盘管的换热面积差别,图中可见右边是左边的3.5倍换热面积,管壁厚度是左边的一半。

6、冰层厚度与管材的关系;冰层厚度、结冰率与时间曲线。

蓄冰系统完全冻结式冰盘管问题说明

蓄冰系统完全冻结式冰盘管问题说明

蓄冰系统----间接接触式
完全冻结式冰盘管
(FAFCO)
蓄冰系统----间接接触式----冰盘管
蓄冰系统----间接接触式----塑料冰盘管
蓄冰系统----间接接触式特点----冰盘管
闭式循环回路
U型盘管可做非标设计,适应不同的安装空间
可制成整装式蓄冰制冷机组---安装方便,适合用于小型项目-----Ice Cell
大型系统可安装气动搅拌系统,融冰利用率可达100%。

主机下游系统,出口温度可根据设计要求设定。

盘管进口温度高,可利用一部分显热能。

注: Fafco and Ice Cel -较少的工程应用经验,性能未被EPRI验证。

盘管式冰蓄冷系统施工技术研究

盘管式冰蓄冷系统施工技术研究

盘管式冰蓄冷系统施工技术研究摘要:随着国际社会能源日益变得稀少,各国对能源越来越重视,为了解决眼前的能源危机,各国开始大力支持研发节能环保的技术以缓解现有能源危机问题。

在此基础上,可以节约电力的技术:盘管式冰蓄冷技术,受到了各国的极力追捧,作者也结合国内将盘管式冰蓄冷技术应用于空调系统中的实例进行盘管式冰蓄冷技术系统施工技术的研究。

关键词:盘管式,冰蓄冷系统,施工技术如果将具有良好节电功效的盘管式冰蓄冷技术融入到了社会人们日常生活中,那一定是要解决人们日常生活中耗电量较大电器的使用,就目前国内应用情况来看,大都被广泛应用在了空调电气系统当中,通常都是通过空调在夜晚处于电力系统供电波普图的峰谷位置处的相应电位差来经过内部安置的制冷机进行造冰作业,以便供白天进行融冰活动提供冷空气,虽然此技术降低了用户电力花销,具有科学节能与良好的经济特点,但是还是存在技术施工方面缺少国家标准的操作规范描述的问题。

一、国内电力系统主要问题以及冰蓄冷技术内容概述1.1我国电力系统供电主要问题夏季是用电问题最多的时期,这一时期人们不仅要像其他三个季节一样进行正常饮食作业,还要借助电器进行解暑活动,这样就为供电系统的电网带来了会造成电力供电系统峰期的供电紧张现象以及与此相伴随而来的谷期电力过剩问题。

1.2冰蓄冷技术主要种类:目前来看国内的冰蓄冷技术有很多种,但是如果将常用的几种进行归纳主要有八种类型,即:(1)完全冰结式;(2)优待盐式;(3)冰球蕊心冰球式;(4)制冰滑落式;(5)热管式;(6)冰晶、冰片式;(7)冰盘管式;(8)供冷蓄冷双效机;然而,由于空调系统的主要蓄冷方式只有三种,即:水蓄冷,冰蓄冷和优态盐蓄冷;而考虑到空调的体积以及蓄冷效果,只有使用冰盘管式冰蓄冷技术系统的空调因为兼具优质的换热效果,具有相对最稳定的适冷温度,所需要单位蓄冷量的花销成本低,制作蓄冰曹的标准要求较低等显著特点,使其在八种不同的空调技术中具有相比较而言最好的经济效益;1.3盘管式冰蓄冷技术工作原理:参照下图图一的四幅小图所示,(图一:盘管式冰蓄冷系统适用空调结构原理图;图中:1.储冰槽2.泵3.三通阀4.空调负荷5.蒸发器6.乙二醇机组7.膨胀水箱8.热交换器9.压缩冷凝器)其实就是将盘管式冰蓄冷技术系统应用到空调主要原理就是通过处于晚上供电系统低谷电价较便宜阶段的较低空调负荷时候启动空调内置的个别制冷机进行造冰从而转化为显热和潜热的能量形式在空调的冰蓄冷槽装置中进行储存一边在白天供电系统高峰电价也贵的空调超高负荷时进行融冰供冷,其实也就是通过事先充分分析电力系统处于谷期电力结构特点,转移电力系统处于波频峰期位置的电力用户至系统的谷期,借以平衡供电电网,有针对性的增削不用频段的电力供应,从而达到削减电力供应建设成本,保护人们生活的大气环境。

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冰蓄冷蓄冰盘管样本4.1 产品样本说明书responsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible forsite laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting, price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible for the whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlement and completed accounts. 5, quality Department: responsible for overallproject quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible forsite laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting, price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible forthe whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible forsite laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting, price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible forthe whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible forsite laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting,price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible forthe whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safetyprocedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible for site laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting, price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible for the whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, andowners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible forsite laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting, price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible forthe whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality information safety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible forsite laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting,price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible forthe whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excludingresponsible for measurement management work and accurate implementation; is responsible for site test room of technology management; do monthly completed engineering volume statistics, and owners, and supervision for engineering progress paragraph settlementand completed accounts. 5, quality Department: responsible for overall project quality, security management. Quality assurance, quality control, quality assurance, quality inspection, evaluation, quality informationsafety guarantee system safety assessment, safety inspections, safety procedures, safety facilities, labour protection, safety measures, fire guard, civil construction, environmental protection, responsible for site laboratory quality management. 6, the Department of management is responsible for the engineering contract management, production and management jobs. Project management and settlement, project reporting, price breakdown and the new price system, monthly volume complete statistics, progress payment settlement with the owner, supervisor and project completion final accounts. Scheduling jobs is responsible for the whole project. Plan, schedule, inspecting and supervising the manufacturing progress goals face, excluding。

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