【摘要】 本文在循环模拟的基础上，分析了各有关参数对跨临界二氧化碳制冷循环性能系数（COP）的影响．分析表明，对给定的冷却器（对应于传统亚临界系统中的冷凝器）出口温度和蒸发温度，冷却压力（对应于传统亚临界系统中的冷凝压力）存在一个使COP最大的最优值．本文给出了最优冷却压力与冷却器出口温度及蒸发温度之间的关联式，为跨临界二氧化碳制冷系统的设计和智能控制提供了依据．更多还原

【Abstract】 篒n this paper,based on cycle simulations,the influence of the system parameters on the coefficient of performance (COP) in transcritical carbon dioxide refrigeration cycles is analyzed. It is shown that an optimal heat rejection (high)pressure exits to furnish maximum COP for a given carbon dioxide outlet temperature of the gas cooler (this component corresponds to the condenser in traditional subcritical systems)and a given desired evaporation temperature. A correlation for this optimal heat rejection pressure is derived. This correlation has provided a bdsis for design of transcritical carbon dioxide refrigerating systems and for intelligence control of such systems.更多还原