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Characteristics of blends using low GWP molecules for application in centrifugal and screw compressor-based chillers.

Number: 119

Author(s) : SCHULTZ K., KUJAK S., SORENSON E.

Summary

This paper summarizes information on blends utilizing low GWP olefin-based refrigerants targeted to application in centrifugal and screw compressor-based water chillers. These types of chillers tend to use shell-and-tube heat exchangers that permit fractionation to occur when running with zeotropic blends. Fortunately, several azeotropic mixtures have become available, such as R513A, R514A, R515A/B, and R516A.
This paper provides a review of the thermodynamic interactions when blending various low GWP refrigerants and azeotropic mixtures suitable for use in vapor compression (e.g., HVAC&R) or expansion (e.g. ORC) applications. This includes molecules already in commercial use and those that have recently come to light. A summary is provided of thermodynamic properties, thermodynamic cycle performance, heat transfer charac-teristics, flammability, stability, and toxicological properties.

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Pages: 8

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Details

  • Original title: Characteristics of blends using low GWP molecules for application in centrifugal and screw compressor-based chillers.
  • Record ID : 30027647
  • Languages: English
  • Subject: HFCs alternatives
  • Source: IIR Rankine Conference 2020.
  • Publication date: 2020/07/31
  • DOI: http://dx.doi.org/10.18462/iir.rankine.2020.1119

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