Comparative experimental study of an open piston compressor working with R-1234yf, R-134a and R-290 / E. Navarro in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013)  

Public ISBD [article]  inInternational journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 768–775 Titre : Comparative experimental study of an open piston compressor working with R-1234yf, R-134a and R-290 Titre original : Etude expérimentale comparative sur un compresseur à piston ouvert fonctionnant au R-1234yf, au R-134a ou au R-290 Type de document : texte imprimé Auteurs : E. Navarro, Auteur ; I. O. Martínez-Galvan, Auteur ; J. Nohales, Auteur Année de publication : 2013 Article en page(s) : pp. 768–775 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Open compressors  Refrigerants  Hydrocarbons  R1234yf  Automotive air conditioning Résumé : Among the different alternatives proposed in the automotive field to replace R-134a and R-1234yf is a new generation fluid which has recently gained great importance for MAC (Mobile Air Conditioning) systems. This fluid has the advantage of having a low GWP (Global Warming potential) and thermodynamic properties similar to R-134a. But there is some criticism regarding the non-natural origin of the fluid and its possible long-term effects on the environment have not been studied. In that sense, hydrocarbons and particularly R-290 can be considered as alternatives. This paper presents a comparative study between R-1234yf, R-134a and R-290 for an open piston compressor at different operating conditions. The text matrix comprised two compressor speeds, evaporation temperatures from −15 °C to 15 °C and condensation temperatures from 40 °C to 65 °C. From these tests, the compressor behavior with these refrigerants has systematically been analyzed in terms of compressor efficiency, volumetric efficiency, losses to the ambient and oil-refrigerant properties. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003258 [article] Comparative experimental study of an open piston compressor working with R-1234yf, R-134a and R-290 = Etude expérimentale comparative sur un compresseur à piston ouvert fonctionnant au R-1234yf, au R-134a ou au R-290 [texte imprimé] / E. Navarro, Auteur ; I. O. Martínez-Galvan, Auteur ; J. Nohales, Auteur . - 2013 . - pp. 768–775. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 768–775 Mots-clés : Open compressors  Refrigerants  Hydrocarbons  R1234yf  Automotive air conditioning Résumé : Among the different alternatives proposed in the automotive field to replace R-134a and R-1234yf is a new generation fluid which has recently gained great importance for MAC (Mobile Air Conditioning) systems. This fluid has the advantage of having a low GWP (Global Warming potential) and thermodynamic properties similar to R-134a. But there is some criticism regarding the non-natural origin of the fluid and its possible long-term effects on the environment have not been studied. In that sense, hydrocarbons and particularly R-290 can be considered as alternatives. This paper presents a comparative study between R-1234yf, R-134a and R-290 for an open piston compressor at different operating conditions. The text matrix comprised two compressor speeds, evaporation temperatures from −15 °C to 15 °C and condensation temperatures from 40 °C to 65 °C. From these tests, the compressor behavior with these refrigerants has systematically been analyzed in terms of compressor efficiency, volumetric efficiency, losses to the ambient and oil-refrigerant properties. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003258

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