Thermodynamic analysis of refrigerant mixtures for possible replacements for CFCs by an algorithm compiling property data
Thermodynamic analysis of refrigerant mixtures for possible replacements for CFCs by an algorithm compiling property data
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DOI：
10.1016/j.applthermaleng.2005.06.005
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发表时间：
2006-03
影响因子：
6.4
通讯作者：
E. Arcaklioğlu;A. Çavusoglu;A. Erişen
中科院分区：
文献类型：
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作者：
E. Arcaklioğlu;A. Çavusoglu;A. Erişen
在这项研究中，我们形成了一个算法来寻找与蒸气压缩制冷系统中基于氟氯化碳的制冷剂相比具有相同体积制冷量(VCC)的制冷剂混合物。为了达到这一目的，制冷剂的点性质是在适当的时候从REFPROP获得的。我们使用了不同作者建议的不同质量百分比的替代混合物比率以及我们新形成的混合物比率。换句话说，我们试图看到改变建议的(即文献中的)替代制冷剂的质量百分比对冷却系统的VCC的影响。其次，利用该算法计算了同一制冷系统的性能系数。这一机制使我们能够将建议的制冷剂混合物的COP和我们新形成的混合物比率与传统的以氟氯化碳为基础的混合物进行比较。结果表明，对于R12、R290/R600a(56/44)、R22、R32/R125/R134a(32.5/5/62.5)、R502、R32/R125/R134a(43/5/52)的混合物，R32/R125/R134a(43/5/52)是合适的替代品。
In this study, we formed an algorithm to find refrigerant mixtures of equal volumetric cooling capacity (VCC) when compared to CFC based refrigerants in vapor compression refrigeration systems. To achieve this aim the point properties of the refrigerants are obtained from REFPROP where appropriate. We used replacement mixture ratios—of varying mass percentages—suggested by various authors along with our newly formed mixture ratios. In other words, we tried to see the effect of changing mass percentages of the suggested (i.e. in the literature) replacement refrigerants on the VCC of the cooling system. Secondly, we used this algorithm to calculate the coefficient of performance (COP) of the same refrigeration system. This mechanism has provided us the ability to compare the COP of the suggested refrigerant mixtures and our newly formed mixture ratios with the conventional CFC based ones. According to our results, for R12 R290/R600a (56/44) mixture, for R22 R32/R125/R134a (32.5/5/62.5) mixture, and for R502 R32/R125/R134a (43/5/52) mixture are appropriate and can be used as replacements.