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首页> 外文期刊>International journal of energy research >Effect of saturation-temperature on the performance of a vapour-compression refrigeration-cycle working on different refrigerants using exergy method
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Effect of saturation-temperature on the performance of a vapour-compression refrigeration-cycle working on different refrigerants using exergy method

机译：饱和温度对利用本能法在不同制冷剂上工作的蒸气压缩式制冷循环性能的影响

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摘要

In this study, the behaviour of a vapour-compression refrigeration cycle, for different refrigerants such as NH_3, R-12, R-22 and HFC-134a was investigated using the exergy method. The cooling load of the plant and the saturation-temperature of the cold chamber were held constant, whereas the saturation-temperatures of the evaporator and the condenser were varied from 303 to 313 K and 258 to 248 K, respectively. The irreversibility rates (or exergy destruction rates) of sub-regions for the whole cycle, using energy and exergy analysis, were determined for each refrigerant. The effects of changes in the saturation-temperature in the condenser and evaporator on the irreversibility rate of the cycle were obtained for each refrigerant. The relations between the total irreversibility rate of the plant and the irreversibility rate of the condenser and the evaporator were determined for different values of saturation temperatures of the condenser and the evaporator. The COP of the cycle and the rational efficiency were determined for each of the refrigerants and compared with each other. Among the refrigerants used, R-12 was found to be the most economical refrigerant as compared with the others.
机译：在这项研究中，使用火用法研究了NH_3，R-12，R-22和HFC-134a等不同制冷剂的蒸气压缩制冷循环行为。设备的冷却负荷和冷室的饱和温度保持恒定，而蒸发器和冷凝器的饱和温度分别从303至313 K和258至248 K变化。使用能量和火用分析确定每种制冷剂在整个循环过程中子区域的不可逆率（或火用破坏率）。对于每种制冷剂，获得了冷凝器和蒸发器中饱和温度变化对循环不可逆率的影响。对于冷凝器和蒸发器的饱和温度的不同值，确定了设备的总不可逆率与冷凝器和蒸发器的不可逆率之间的关系。确定每种制冷剂的循环COP和合理效率，并将其进行比较。与其他制冷剂相比，R-12被认为是最经济的制冷剂。

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