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Thermodynamic analysis of refrigerant mixtures for possible replacements for CFCs by an algorithm compiling property data.

Author(s) : ARCAKLIOGLU E., CAVUSOGLU A., ERISEN A.

Type of article: Article

Summary

In this study, the authors formed an algorithm to find refrigerant mixtures of equal volumetric cooling capacity (VCC) when compared to CFC based refrigerants in vapour compression refrigeration systems. To achieve this aim, the point properties of the refrigerants are obtained from REFPROP where appropriate. They used replacement mixture ratios, of varying mass percentages, suggested by various authors along with the authors newly formed mixture ratios. In other words, the authors 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, the authors used this algorithm to calculate the COP of the same refrigeration system. This mechanism has provided them the ability to compare the COP of the suggested refrigerant mixtures and their newly formed mixture ratios with the conventional CFC based ones. According to their 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. [Reprinted with permission from Elsevier. Copyright, 2005].

Details

  • Original title: Thermodynamic analysis of refrigerant mixtures for possible replacements for CFCs by an algorithm compiling property data.
  • Record ID : 2006-2205
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 26 - n. 4
  • Publication date: 2006/03

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