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Une étude expérimentale sur la performance des systèmes de conditionnement d'air automobiles utilisant les frigorigènes R-134a et R-152a.

An experimental study on performance of automotive air-conditioning system using R-134a and R-152a refrigerants.

Auteurs : LEE D. W., YOO S. Y.

Résumé

As the climate changes have happened worldwide, every country is making efforts to prevent the ozone depletion and global warming. In the automotive industry, R-134a refrigerant is widely used in these days because it has zero ozone depletion potential. But global warming potential of it is high. Therefore, alternative refrigerants are needed as a replacement of R-134a. R-152a is considered as one of the alternatives due to zero ODP and low GWP. In the paper, performances of the automotive air-conditioning system using R-134a and R-152a are compared experimentally in the bench level. Experimental apparatus simulated real automotive air-conditioning system consisting of cabin room and engine room. Cooling capacity, condensing capacity, COP and power consumption characteristics of automotive air-conditioning system are evaluated by changing air velocity entering the condenser and compressor revolution speed with the optimized refrigerant charge. The performance of R-152a system was investigated by changing the thermostatic expansion valve set values. As a result of the study, R-152a refrigerant shows the possibility of an alternative refrigerant of current R-134a in the automotive air-conditioning system.

Détails

  • Titre original : An experimental study on performance of automotive air-conditioning system using R-134a and R-152a refrigerants.
  • Identifiant de la fiche : 2007-0835
  • Langues : Anglais
  • Source : ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Date d'édition : 21/05/2006

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