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Les conditionneurs d'air résidentiels et les pompes à chaleur utilisant le dioxyde de carbone (le CO2, R744) comme fluide actif.

Reversible residential air conditioners and heat pumps using carbon dioxide (CO2, R744) as working fluid.

Auteurs : HAFNER A., NEKSÅ P., STENE J.

Résumé

The current world market for reversible air conditioners (RAC) split-type units is roughly 30 to 35 million units per year. Virtually all of them use HCFC-22, R407C or R410A, which are powerful greenhouse gases with relatively high global warming potentials (GWP-values). Although the refrigerant leakages from HCFC and HFC RAC systems are relatively small, an alternative solution is to utilize refrigerants that do not have any negative impact on the global environment, such as the nonsynthetic fluids ammonia, hydrocarbons and carbon dioxide. Carbon dioxide (CO2, R744) is one of the few non-toxic and non-flammable working fluids that contributes neither to ozone depletion nor global warming. Due to its favourable thermophysical properties, R744 is regarded an interesting alternative to the HCFCs and HFCs in many applications including residential air-conditioners and heat pumps.

Documents disponibles

Format PDF

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 : Reversible residential air conditioners and heat pumps using carbon dioxide (CO2, R744) as working fluid.
  • Identifiant de la fiche : 2010-0221
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Latest technologies in refrigeration and air conditioning: energy issues and climate change, new refrigerants, new European regulations, new plants, the cold chain. XIII European Conference: June 12-13, 2009, Milan.
  • Date d'édition : 12/06/2009

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