带有热回收器的溶液除湿复合热泵系统模型及其性能分析  

Modeling and performance analysis of the liquid dehumidification and heat pump hybrid system with heat recovery

作　　者：彭冬根[1] 曹卓 罗丹婷[1] Peng Donggen;Cao Zhuo;Luo Danting(School of Civil Engineering and Architecture,Nanchang University,Nanchang 330031,Jiangxi,China)

机构地区：[1]南昌大学建筑工程学院,江西南昌330031

出　　处：《可再生能源》2020年第11期1460-1469,共10页Renewable Energy Resources

基　　金：国家自然科学基金(51766010);南昌市知识创新团队项目(2018-CXTD-004);江西省研究生创新专项资金项目(YC2019-S002)。

摘　　要：文章建立了带有热回收器的溶液除湿复合热泵系统模型,并根据该模型的模拟结果分析了冬、夏季条件下,热泵机组的性能系数COPHP、复合热泵系统的性能系数COPsys、送风温度ta,i和送风含湿量ωa.i随不同热回收器换热效率的变化情况。分析结果表明:冬、夏季,当处于除湿器和再生器之间的溶液-溶液热回收器的换热效率由0.7升高至0.95时,COPsys分别增大了7.16,3.85;当处于送排风管之间的空气-空气热回收器换热效率由0.1升高至0.9时,COPsys分别增大了1.42和1.67,此工况下的COPsys提升程度低于热回收器处于除湿器和再生器之间的工况;在除湿/再生器入口处安装溶液-空气热回收器后,随着热回收器换热效率由0.1逐渐升高至0.9,夏季,COPsys仅升高了0.4,冬季,COPsys略微下降。In this paper,model of liquid dehumidification and heat pump hybrid system with heat recovery units are constructed to analyze the variations of the coefficient of performance of heat pump(COPHP),the coefficient of performance of the whole system(COPsys),the supply air temperature and its moisture content with different heat recovery units,as well as their effectiveness,under winter and summer conditions.Results indicates that,under winter and summer conditions,COPsys increases by 7.16 and 3.85 respectively,as the solution-solution heat recovery unit between liquid dehumidifier and regenerator increases from 0.7 to 0.95;Meanwhile the COPsys improves by 1.42 and 1.67 respectively,with raising the efficiency of the air-air heat recovery device installed between the supply air duct and exhaust duct from 0.1 to 0.9,the increases extent of COPsys under this condition is lower than that of the heat recovery unit between the dehumidifier and the regenerator;moreover,the yield of adding solution-air heat recovery unit at the inlet of dehumidifier/regenerator is low,as increasing the heat transfer efficiency from 0.1 to 0.9,the COPsys in summer only improves by 0.4,while the COPsys in winter even slightly declines by 0.05.

关 键 词：热回收器 溶液除湿 热泵 传热单元数 

分 类 号：TK5[动力工程及工程热物理—热能工程] TU831.6[建筑科学—供热、供燃气、通风及空调工程]