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基于火用分析的观点,运用有限时间热力学方法分析恒温热源内可逆简单空气制冷循环的特性,导出制冷率、生态学目标函数和火用效率与压缩机压比等主要影响参数的解析式,以相应的数值计算分析压缩机压比、高低温侧换热器热导率分配对循环性能优化的影响特点,并把生态学优化目标、火用效率优化目标和传统的制冷率优化目标进行综合比较。所得结果对工程制冷系统设计具有一定的指导意义。
Based on the exergy analysis, the finite element time-dependent thermodynamics method is used to analyze the characteristics of the reversible simple air refrigeration cycle in a constant temperature heat source, and the analytical expressions of the main influence parameters such as the cooling rate, the ecological objective function, the exergy efficiency and the compressor pressure ratio Corresponding numerical calculation and analysis of compressor pressure ratio, high and low temperature side heat exchanger thermal conductivity distribution on the optimization of cycle performance characteristics, and the ecological optimization objectives, the optimization of the target efficiency and the traditional cooling efficiency of the cooling rate of a comprehensive comparison . The results obtained for the engineering refrigeration system design has a certain significance.