传热规律对内可逆四热源吸收式热泵循环性能的影响

The Effect of Heat Transfer Law on The Performance of An Endoreversible Four-Heat-Reservoir Absorption Heat Pump

建立了传热规律为Q∝Δ(Tn)时内可逆四热源吸收式热泵循环模型,导出了循环泵热率和泵热系数的一般关系;并导出了传热服从线性唯象定律时的基本优化关系、循环中工质的最佳工作温度和换热器传热面积的最佳分配关系;通过数值算例分析了传热规律对循环性能的影响规律,比较了传热面积最优分配前后循环的最优性能。

An endoreversible four-heat-reservoir absorption heat pump cycle model with heat transfer law of Q∝Δ(T^n) is established.The general relation between the heating load and coefficient of performance with Q∝Δ(T^n);the fundamental optimal relation,the optimal temperatures of working substance and the optimal heat transfer surface areas distribution with linear phenomenological heat transfer law are derived.Moreover,the effect of heat transfer law on the performance of absorption heat pumps is analyzed and the performance is compared with the optimal distribution of the overall heat transfer surface area or not by numerical example.