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Solubility, miscibility and compatibility studies of low GWP non-flammable refrigerants and lubricants for refrigeration and air conditioning applications.

Author(s) : TANGRI H., PUROHIT N., SETHI A., HULSE R.

Type of article: IJR article

Summary

Majority of currently used refrigeration and air conditioning systems utilize high GWP refrigerants such as R410A, R404A and R134a. These systems have large leak rates which leads to significant amount of release of HFC's to the environment. The growing environmental concerns are driving stringent regulations to phase out these high GWP refrigerants and move towards adoption of lower GWP refrigerants. This transition would require understanding of interaction between low GWP refrigerants and lubricating oil as well as the material compatibility with commonly used thermoplastics and elastomers. In this article, nonflammable low GWP refrigerants, R515B and R471A are introduced as the potential replacements for R410A, R404A and R134a in an air-conditioning and medium temperature refrigeration applications. Solubility and miscibility of R515B and R471A with polyol ester-based oil (POE32) is experimentally investigated over a temperature range of −20 °C to 120 °C and −30 °C to 75 °C, respectively. Further this article also presents the compatibility results of R515B and R471A (POE32) with thermoplastics and elastomers used in refrigeration and air-conditioning systems.

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Pages: 45-63

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Details

  • Original title: Solubility, miscibility and compatibility studies of low GWP non-flammable refrigerants and lubricants for refrigeration and air conditioning applications.
  • Record ID : 30031144
  • Languages: English
  • Subject: HFCs alternatives
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 148
  • Publication date: 2023/04
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2022.12.022

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