可逆卡诺制冷机和热泵的输出率密度分析与优化

Optimization of Output Load Density for Reservoir Endoreversible Carnot Refrigerator and Heat Pump

以逆卡诺循环的输出率密度(对循环最大比容平均的循环输出率),即卡诺制冷机的制冷率密度和卡诺热泵的供热率密度作为热力性能目标,分别对内可逆卡诺制冷机和热泵进行分析与优化,导出了最佳换热器面积分配的关系式,计算分析了热源温比对输出率密度与性能系数关系的影响。所得结果不同于以制冷率和供热率为目标的优化结果,对装置设计具有一定理论上的指导意义。

The performance analysis and optimization of constant-temperature heat reservoir endoreversible Carnot refrigerator and heat pump is carried out by taking the output load density （the ratio of output load to the maximum specific volume in the cycle） , i.e. the cooling load density and the heating load density as the optimization objective in this paper The analytical expression for the optimal allocation of heat-exchanger area is derived. The effect of heat reservoir temperature ratio on the output load density is analyzed by detailed numerical examples. The results obtained are different from those with the cooling load and heating load objective and of theoretic significance to the design practice for future plants.