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Working towards more environmentally friendly refrigerant blends.

Author(s) : COX N.

Summary

This paper describes ongoing work to identify azeotropic and near azeotropic mixtures with a normal boiling point of between -40 and -80°C. The aim was to match the saturated pressure temperature characteristics and refrigerating capacity of R-410A, whilst achieving higher critical temperatures. Thus, the intended outcome is an extended range of applicability and an improvement in potential energy efficiency. Of a large number of potential combinations, five azeotropic and four near azeotropic mixtures have been identified, all formed from natural refrigerants or synthetic chemicals with a global warming potential (GWP) or less than 150. These mixtures were subject to a variety of further analyses, including thermodynamic, performance and safety assessments, thereby providing a shortlist of the most suitable blends.

Details

  • Original title: Working towards more environmentally friendly refrigerant blends.
  • Record ID : 2008-2029
  • Languages: English
  • Subject: Regulation, Environment, General information
  • Source: Technological innovations in air-conditioning and refrigeration industry + CD-ROM.
  • Publication date: 2007/06/08

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