Performance analysis of three-stage liquid desiccant deep dehumidification processor driven by heat pump  

热泵驱动的三级溶液深度除湿机组的性能分析(英文)

作　　者：张海强[1] 刘晓华[1] 江亿[1] 

机构地区：[1]清华大学建筑学院,北京100084

出　　处：《Journal of Southeast University(English Edition)》2010年第2期217-221,共5页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.50778094)

摘　　要：A new type of a heat pump driven three-stage lithium bromide liquid desiccant deep dehumidification processor is presented,which can dehumidify the outdoor humid air to a rather dry state,even when there is no available indoor exhaust air.The test results show that with an outdoor air temperature of 28 to 31 ℃ and an outdoor air humidity ratio of 11 to 14 g/kg,the supply air temperature and the supply air humidity ratio are 1.6 to 2.6 ℃ and 2.6 to 3.0 g/kg,respectively,and the coefficient of performance（COP）of the processor is 1.8.During the test,a liquid pipeline link problem leading to mixture losses of hot and cold liquid desiccants is found.These pipelines are modified.Then,the performance of the modified processor is investigated.And the experimental results show that with an outdoor air temperature of 25 to 32 ℃ and an outdoor air humidity ratio of 18 to 21 g/kg,the supply air temperature and the supply air humidity ratio are 3.2 to 4.0 ℃ and 3.4 to 3.6 g/kg,respectively,and the COP is 2.8.Finally,a mathematical model of the processor is established.The comparison of the simulation results and the test results of the processor exhibits that the pipeline modification improves the performance by about 20%.设计了一种热泵驱动的溴化锂溶液深度除湿机组,该机组适用于无回风可利用、低湿度需求的场合.机组的性能测试结果显示,当室外温度为28～31℃,含湿量为11～14g/kg时,机组的送风温度为1.6～2.6℃,含湿量为2.6～3.0g/kg,系统COP为1.8.测试时发现了一个造成冷热溶液混合损失的管路链接问题,并对其进行修改.然后,对修改后的新机组进行了性能测试,结果显示,在室外温度为25～32℃,含湿量为18～21g/kg时,机组的送风温度为3.2～4.0℃,含湿量为3.4～3.6g/kg,系统COP为2.8.最后,对机组建立数学模型,并将模拟结果与实测数据进行比较,结果表明管路改动使机组性能提升约20%.

关 键 词：deep dehumidification liquid desiccant performance test AIR-CONDITIONING 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]