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An overview of lower GWP blends for the food cold chain.

Number: pap. 72

Author(s) : LARMINAT P. de

Summary

In the food cold chain, R-404A and R-22 are very widely used. But the ban of R-22 is now completed or ongoing according to the regions. Due to its very high GWP, R-404A will also be subject to bans or restrictions in the future. To replace R-22 and R-404A, over twenty synthetic refrigerants, mostly blends, are proposed by various producers and referenced with ASHRAE classification. This multiplicity of products is confusing. Some are proposed as alternatives to R-22, or to R-404A, or both. Some are flammable; others are not. GWP’s can vary in a wide range. This paper provides the basic concepts to understand why and when blends are needed, and the link between their formulation and their key physical and environmental properties: operating pressures, temperature glide, volumetric capacity, GWP, and flammability. The most commonly proposed alternatives are analyzed to provide some understanding of the trade-offs between GWP, flammability, and key physical parameters.

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Pages: 8

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Details

  • Original title: An overview of lower GWP blends for the food cold chain.
  • Record ID : 30023428
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 5th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Beijing, Chine, 6-8 avril 2018
  • Publication date: 2018/04/06
  • DOI: http://dx.doi.org/10.18462/iir.iccc.2018.0072

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