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Nouveaux mélanges de frigorigènes azéotropiques et quasi-azéotropiques à pression élevée et à faible GWP.

New high pressure low-GWP azeotropic and near-azeotropic refrigerant blends.

Auteurs : COX N., MAZUR V., COLBOURNE D.

Résumé

This paper describes the latest findings of a project 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 existing refrigerants within this range (such as R410A and R744), whilst achieving higher critical temperatures and - where relevant - lower triple point temperatures. Thus, the intended outcome is an extended range of applicability and an improvement in energy efficiency. Of a large number of potential combinations, three azeotropic and near-azeotropic mixtures have been selected, all formed from natural refrigerants or synthetic chemicals with a global warming potential of less than 150. These mixtures were subject to a variety of analyses, including thermodynamic, performance and safety assessments. Patents have been filed and published and global licensees are now being sought.

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Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : New high pressure low-GWP azeotropic and near-azeotropic refrigerant blends.
  • Identifiant de la fiche : 2009-0025
  • Langues : Anglais
  • Source : 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Date d'édition : 14/07/2008

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