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2015•Institut International du FroidOpen access

Evaluations of PVE lubricants for A/C system with the low global warming potential refrigerants.

Tomoya Matsumoto, Masato Kaneko, Yasuhiro Kawaguchi

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Abstract

For the prevention of global warming, various low global warming potential (GWP) refrigerants are proposed as the alternative of R410A for air conditioning system. In this study, we evaluated the relationship between the R32 refrigerants and PVE lubricants. The evaluation items were physical properties (miscibility, solubility, mixture viscosity and electric property) and thermal stability and lubricity. As a result, it was found that Type-B was suitable for the R32 refrigerants. In addition, Type-C was also developed to improve the friction coefficient for R32.

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What this paper is about

For the prevention of global warming, various low global warming potential (GWP) refrigerants are proposed as the alternative of R410A for air conditioning system. In this study, we evaluated the relationship between the R32 refrigerants and PVE lubricants. The evaluation items were physical properties (miscibility, solubility, mixture viscosity and electric property) and thermal stability and lubricity. As a result, it was found that Type-B was suitable for the R32 refrigerants. In addition, Type-C was also developed to improve the friction coefficient for R32.

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Available abstract

For the prevention of global warming, various low global warming potential (GWP) refrigerants are proposed as the alternative of R410A for air conditioning system. In this study, we evaluated the relationship between the R32 refrigerants and PVE lubricants. The evaluation items were physical properties (miscibility, solubility, mixture viscosity and electric property) and thermal stability and lubricity. As a result, it was found that Type-B was suitable for the R32 refrigerants. In addition, Type-C was also developed to improve the friction coefficient for R32.

Key concepts: Refrigerant, Lubricity, Global warming, Environmental science, Miscibility, Global-warming potential, Thermodynamics, Materials science

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