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Application of low global warming potential refrigerants for room air conditioner.

Application de frigorigènes à faible GWP dans un conditionneur d'air.

Numéro : pap. NS25

Auteurs : FUJITAKA A., SHIMIZU T., SATO S., et al.

Résumé

An application of the low Global Warming Potential (GWP) refrigerants, HFO-1234yf (2,3,3,3-tetrafluoropropene) and R32/HFO-1234yf mixtures, for the room air conditioner was performed. Acid number of polyolester refrigeration oil for R410A has greatly increased after aging with HFO-1234yf containing air. HFO-1234yf breakdown products such as hydrogen fluoride may cause this phenomenon. However, other materials compatibility has been almost identical to R410A. Using R410A room air conditioner, the drop-in tests of HFO-1234yf and R32/HFO-1234yf mixtures were carried out. The performance of HFO-1234yf is significantly lower than that of R410A as a result of the pressure drop increasing. The performance of R32/HFO-1234yf improves as the R32 concentration becomes richer. The COPs of R32/HFO-1234yf (50/50 wt%) under cooling and heating conditions are 95 and 94% of those of R410A respectively.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Application of low global warming potential refrigerants for room air conditioner.
  • Identifiant de la fiche : 30000589
  • Langues : Anglais
  • Source : Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Date d'édition : 17/02/2010

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