【摘要】 应用多级不可逆耦合制冷系统的一般循环模型 ,探讨热阻和内不可逆性等因素对其循环性能的影响 .导出制冷系数与制冷率间的基本优化关系 ,并对循环性能作火用分析 .所得结果具有普遍意义 ,可揭示多级制冷循环系统的一般性能特性更多还原

【Abstract】 A general cycle model of a multi stage irreversible combined refrigeration syst em is used to reach the influence of thermal resistance and internal ir reversibility on the performance of the cycle. The fundamental optimum relation between the coefficient of performance and the rate of refrigeration is derived. The exergy analysis of the cyclic performance is carried out. The results obtai ned here are of general significance and can reveal the general performance char acteristics of multi stage refrigeration systems.更多还原