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Performance evaluation of light commercial air conditioning and heat pump system using low GWP refrigerants.

Number: No 111

Author(s) : JOSHUA H., KIM M.

Summary

Concerns about global climate change and potential legislation that may impact the use of refrigerants with high global warming potential (GWP) have accelerated the development of new refrigerants with reduced impact on climate change. Along with the Kigali amendment to the Montreal Protocol to phase down use of HFCs, there are regulations around the world with specific GWP limits for air conditioning and heat pump applications. The most common refrigerant used globally in residential and light commercial air conditioning systems and heat pumps is R410A, with a GWP of 2088. Regulations are already in place to limit the GWP to below 750 in many regions globally, and there may be further reductions needed in the future. This paper discusses alternative fluids that have been developed to most nearly meet the most often cited requirements for environmental, physical, and performance properties for air conditioning and heat pump applications. R454B, with a GWP of 466 and both performance and properties similar to R410A, is a potential alternative to meet these requirements while maintaining compatibility with systems similar to those of existing R410A designs to enable an orderly transition to lower GWP. Performance will be evaluated in a light commercial air conditioning and heat pump system and compared with R410A at both standard air conditioning and heating operating conditions. These refrigerants are shown to provide useful options to help maintain the quality of life and health benefits from air conditioning and refrigeration, but in an energy efficient, cost-effective, and environmentally sustainable manner.

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Pages: 10 p.

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  • Original title: Performance evaluation of light commercial air conditioning and heat pump system using low GWP refrigerants.
  • Record ID : 30029989
  • Languages: English
  • Subject: Technology, HFCs alternatives
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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