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基于Exergy研究的地源热泵降温系统性能分析

, PP. 146-150

Keywords: 地源热泵,降温,可用能,性能系数

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Abstract:

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

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