以下为句子列表：
英文: Deduces a mathematical model reflecting the relationship between the coefficient of performance (COP) of water-source heat pump units and the water temperatures on evaporator side and condenser side through analysing the influence of the water temperature
中文: 摘要通过对水源热泵机组定温差、变工况运行时蒸发器侧和冷凝器侧水温对机组性能影响的分析，得到了机组性能随两侧水温变化的数学模型。
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英文: It is found that for the PTR studied the coefficient of performance of the double inlet type can be improved from 0.091 to 0.108 and from 25.04% to 29.95% for the corresponding exergy efficiency compared with the orifice type.
中文: 计算结果表明：针对所研究的脉管制冷机从小孔型到双向进气型的改进使得制冷机的制冷系数从0.091提高到了0.108，（火用）效率从25.04%提高到了29.95%；回热器和小孔阀是制冷机中产生（火用）损失的主要部件。
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英文: Using numerical simulation method, detailed dynamic pressure variations, transient gas temperature and mass flow rate in the PTR, and the coefficient of performance of PTR and the exergy losses of all parts of PTR were obtained.
中文: 用数值模拟方法得到了制冷机内部各点的压力、温度、质量流率等参数的瞬时变化情况及整机的制冷系数，并得到了制冷机各部件的（火用）损失及整机的（火用）效率。
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英文: The Influence of Internal Heat Leak on the Rate of Rerfrige-ration Versus Coefficient of Performance of Refrigerators
中文: 热漏对制冷机制冷率制冷系数特性的影响
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