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本文用有限时间热力学与经济优化相结合的方法，导出ｑ∝△（Ｔ）和ｑ∝△（Ｔ－１）两种传热规律下，三热源热泵的最佳利润率、供热系数关系，得到最大利润率时的供热系数界限。
In this paper, the combination of finite-time thermodynamics and economic optimization is used to derive the optimal profit rate and heat supply coefficient of three heat-source heat pumps under the two heat transfer laws of qα △ (T) and qα △ (T-1) Get the maximum profit margin when the heating coefficient limit.