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Review of lower GWP refrigerants for retrofitting R-410A applications.

Number: 2115

Author(s) : PETERSEN M., KUJAK S.

Summary

R-410A is a refrigerant blend of R-32 and R-125 that is widely used in air conditioning applications. R-410A has become a target for a phase-down in line with global carbon emission reduction initiatives (Kigali amendment to the Montreal Protocol, EU F-Gas Regulation, etc.) due to its high global warming potential (GWP), lower GWP refrigerant alternatives for retrofitting into existing R-410A systems are required to be nonflammable while providing similar performance in efficiency and more importantly capacity. Development of lower GWP R-410A alternatives has been difficult and refrigerant manufacturers have developed few options that attempt to fulfill these requirements. Currently viable reduced GWP options are blends with elevated temperature glide with significantly reduced capacity that need to be considered for retrofit situations.
This paper evaluates the match between different refrigerants and the application requirements for retrofitting into R-410A air conditioning systems. A focus on temperature glide and inherent performance impact is evaluated and related to possible consideration for use. Finally material compatibility information is provided for R-466A, a nonflammable near design compatible R-410A alternative, outlining the interaction of refrigerant with materials of construction.

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Pages: 10 p.

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Details

  • Original title: Review of lower GWP refrigerants for retrofitting R-410A applications.
  • Record ID : 30030471
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022/07/10

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