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Frigorigènes de remplacement potentiels du R114.

Potential R114 replacement refrigerants.

Auteurs : BROWN J. S.

Résumé

This paper uses the methodology for evaluating the thermodynamic performance potentials of alternative refrigerants described in, for example, Reid et al. (1987) and Poling et al. (2001), and illustrated in recent publications by Brown, to evaluate 56 potential R-114 replacement refrigerants for high-temperature heat-pumping applications. In particular, the 56 refrigerants consist of 36 pure fluids and twenty near-azeotropes. An idealized vapour compression refrigeration cycle is used to estimate the performance potentials (COP and volumetric heating capacity [VHC]) of the 56 refrigerants. In addition to the COP and VHC, other basic cycle data are provided for each refrigerant. Furthermore, other relevant data (e.g., global warming potential, flammability, and toxicity) are provided. Of the 56 refrigerants, 13 should receive further consideration as potential R-114 replacement refrigerants. Three (R245eb, R245ca, and R245fa) are lower-pressure fluids (implying larger systems); eight (SF5CF2H, R-E236fa, R-E245cb1, R236ca, R236ea, R143, R236cb, and R254cb), have similar operating pressures as R-114 (implying similarly sized systems); and two, R-764 and R-717, are higher-pressure fluids (implying smaller systems) with high compressor discharge temperatures.

Détails

  • Titre original : Potential R114 replacement refrigerants.
  • Identifiant de la fiche : 2009-1027
  • Langues : Anglais
  • Source : ASHRAE Transactions. 2008 Annual Meeting, Salt Lake City, UT. Volume 114, part 2 + CD-ROM.
  • Date d'édition : 21/06/2008

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