太阳能热泵的有限时间热力学分析

Finte-Time Thermodynamic Analysis of a Solar Heat Pump

基于内可逆三热源热泵的有限时间热力学理论和太阳能集热器的线性热损模型，研究太阳能热泵系统的优化性能，导出太阳能集热器的最佳工作温度、系统的最大总性能系数和最大泵热率，并指出现有文献中有关这类研究的错误，所得结果可为实际太阳能热泵系统的优化设计提供一些新的理论依据。

The optimal performance of a solar heat pump system is investigated onthe basis of the finite-time thermodynamic theory of endoreversible three-heat-source heatpumps and the linear heat loss model of solar collectors. The optimal operating temperatureof the solar collector,and the maxima of the total coefficient of performance and the rate ofpuniping heat of the system are derived.Some errors,which are relative to the investigationof solar thermodynamic cycles and appear in the current literature,are pointed out.The re-sults obtained here can provide some new theoretical bases for the optimal design of the prac-tical solar heat pump system.