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Document IIF

Etude expérimentale de la pompe à chaleur d'un prototype de système de conditionnement d'air automobile au dioxyde de carbone.

Experimental study on heat pump operation of prototype CO2 mobile air conditioning system.

Auteurs : HAFNER A.

Résumé

The heating-up time of the passenger compartment has to be short even in vehicles with modern direct injection engines. An efficient supplementary heating system is required to meet this need. A prototype CO2 air conditioning system was tested in heat pump mode. The heating capacity was between 2 and 6 kW at ambient temperatures of 5 and -5 °C and the relative humidity was 80%. Frost formation on the exterior heat exchanger surface was the limiting factor. The formation of frost could be delayed by controlling the evaporation pressure with a variable displacement compressor. The air-flow through the exterior heat exchanger was blocked after 15-20 minutes of operation.

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Format PDF

Pages : 2000-1

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Détails

  • Titre original : Experimental study on heat pump operation of prototype CO2 mobile air conditioning system.
  • Identifiant de la fiche : 2002-0492
  • Langues : Anglais
  • Source : Final proceedings of the 4th IIR-Gustav Lorentzen Conference on Natural Working Fluids at Purdue.
  • Date d'édition : 25/07/2000

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