PartagerApplication de frigorigènes à faible GWP dans un conditionneur d'air.
Application of low global warming potential refrigerants for room air conditioner.
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.
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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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