基于Exergy研究的地源热泵降温系统性能分析  

Performance Analysis on Ground Source Heat Pump Cooling System Based on Exergy Research

作　　者：柴立龙[1] 马承伟[1] 袁小艳[1] 张义[1] 余飞 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]中科华誉能源技术发展有限公司,北京100080

出　　处：《农业机械学报》2009年第2期146-150,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：“十一五”国家科技支撑计划资助项目(2006BAD28B07)

摘　　要：以地下水式地源热泵系统在农业温室和办公楼中的夏季降温研究为例,归纳出地源热泵降温系统的能量利用质量模型——Exergy分析模型,以Exergy损失Edest和Exergy效率ε为评价指标对降温工况下系统及其组成单元的热力学性能进行分析和探讨。分析结果表明:蒸发器的Exergy效率达到92.5%,具有较高的能源利用质量;冷凝器的Exergy效率相对较小,Exergy损失较大,不可逆性大;总体来看,系统的Exergy效率较低。与此同时,试验期间地源热泵机组和系统的制冷性能系数分别为5.90和3.56。The Exergy analytical method was adopted to analyze the performance of groundwater source heat pump （GSHP） system by applying Exergy destruction Edest and Exergy efficiency ε. Related Exergy analytical models have been put forward according to the cooling experiment carried out in an office building and a Chinese solar greenhouse in the summertime of 2007. Analytical results showed that the evaporator has a higher Exergy efficiency than other parts of the system, which reached 92.5%. However, the Exergy efficiency of condenser and total GSHP system was not very satisfying. Meanwhile, the coefficient of performance of GSHP unit and total system has reached 5.90 and 3.56 respectively.

关 键 词：地源热泵 降温 可用能 性能系数 

分 类 号：TK521.2[动力工程及工程热物理—热能工程]