一种三热源热泵热水系统及其节能评价

A three-heat-source hot water system and its exergy analysis

文章对空气源热泵热水系统、地下水源热泵热水系统和三热源热泵热水系统进行对比分析。三热源热泵热水系统是空气源、污水源和能量回收联合热水系统,空气源热泵利用夜间谷电运行生产热水,午后洗浴废热能量回收后,污水源热泵在峰电下运行生产热水。火用评价结果表明,该系统稳定性好,运行成本低,年平均火用效率高,值得推广。

In this paper,air-source heat pump（ASHP） hot water system,groundwater source heat pump（GSHP） hot water system and three-heat-source hot water system（TSHS） are compared.The TSHS is a kind of hot water system consisting of air source,wastewater source and energy recycle,and it operates as follows： ASHP runs with valley electricity during night to produce hot water,then waste heat energy of bath recycles during afternoon,and wastewater-source heat pump（WSHP） runs with peak electricity to produce hot water.The result of exergy analysis shows that the TSHS runs at a steady course with low cost and high mean annual efficiency,which is worth promoting.