传热规律、热漏和内不可逆性对吸收式热泵循环性能的影响

建立了考虑泵热空间到环境热源的热漏、工质循环的内部不可逆性以及工质与热源之间传热Q∝△(T^a)服从传热规律时的不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；并导出了线性唯象传热定律时循环泵热率和泵热系数的基本优化关系、性能极值、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；通过数值耸例分析了传热规律、热漏和内不可逆性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。

Effects of heat transfer law, heat leak and internal irreversibilities on performance of absorption heat pump

An irreversible model of the four-heat-reservoir absorption heat pump cycle was established, taking account in the heat leak, internal irreversibilities and the heat transfer between the working substance and the heat reservoirs with heat transfer law of. The general relation between the heating load and the COP (coefficient of performance) with was deduced. The fundamental optimal relation between the heating load and the thermal coefficiency, the maximum COP, the optimal temperatures of working substance, as well as the optimal heat transfer surface areas distribution were derived with linear phenomenological heat transfer law. Effects of heat transfer, heat leak and internal irreversibilities on the performance of the absorption heat pumps was analyzed. Numerical examples were presented to compare the performance with or without the optimal distribution of the total heat transfer surface area.