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A thermodynamic analysis of refrigerants: Performance limits of the vapor compression cycle

机译：制冷剂的热力学分析：蒸汽压缩循环的性能极限

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This paper explores the thermodynamic performance limits of the vapor compression cycle. We have applied evolutionary algorithms to explore the performance of hypothetical refrigerants defined by the thermodynamic parameters used by the extended corresponding states model for fluid properties. We identified optimal values of these parameters required to reach the performance limits. The study confirmed the fundamental trade-off between the coefficient of performance (COP) and volumetric capacity, and indicated refrigerant critical temperature as the dominant parameter influencing the tradeoff. Thermodynamic performance limits depend on the operating conditions and the cycle design. These limits are represented by Pareto fronts developed for the objective functions COP and volumetric capacity. As expected, the performance of current refrigerants falls below the Pareto front limits. We demonstrate that for practical cycles the developed methodology and resulting Pareto fronts are more realistic benchmarks for the performance potentials of refrigerants than is COP alone, which is an efficiency only metric.
机译：本文探讨了蒸汽压缩循环的热力学性能极限。我们已经应用了进化算法来探索由热力学参数定义的假想制冷剂的性能，该流体力学参数是由扩展的相应状态模型使用的。我们确定了达到性能极限所需的这些参数的最佳值。该研究证实了性能系数（COP）与容量之间的基本权衡，并指出制冷剂临界温度是影响权衡的主要参数。热力学性能极限取决于运行条件和循环设计。这些极限由针对目标函数COP和体积容量开发的Pareto前沿表示。不出所料，当前制冷剂的性能低于帕累托前沿极限。我们证明，对于实际循环，与仅作为效率指标的COP相比，已开发的方法论和由此产生的Pareto前沿是制冷剂性能潜力的更现实的基准。

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