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Performance characteristics of a two-stage irreversible combiend refrigeration system at maximum coefficient of performance

机译：两级不可逆组合制冷系统在最大性能系数下的性能特征

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摘要

A general cycle model of a two-stage combined refrigeration system is established and used for analizing the infleunce of multi-irreversibilities, such as finite rate heat transfer, heat leak between the heat reservoirs and internal dissipation of the workign fluid, on the performance of the refrigeration system. The coefficient of performance is taken as an objective function for optimization. The maximum coefficient of performance is calculated, and other corresponding performance parameters, such as the temepratures of the working fluid in the isothermal processes, the optimal distribution of the heat transfer areas and the power input of the refrigeration system, are determined. The results obtained here are more general than those obtained form a two-stage endoreversible combined refrigeration system and can guide the optimla design and operation of real combined refrgierator systems.
机译：建立了两级组合制冷系统的通用循环模型，并将其用于分析多种不可逆性的影响，例如有限速率传热，储热器之间的热泄漏以及工作流体的内部耗散。制冷系统。性能系数被视为优化的目标函数。计算最大性能系数，并确定其他相应的性能参数，例如等温过程中工作流体的温度，传热面积的最佳分布以及制冷系统的功率输入。与从两阶段可逆组合式制冷系统获得的结果相比，此处获得的结果更为笼统，可以指导实际组合式制冷器系统的优化设计和操作。

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