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Development of natural-refrigerant heat pumps: examples of propane and CO2.

Exemples de développements de pompe à chaleur aux fluides naturels : cas du propane et du CO2.

Author(s) : COLASSON S., MARECHAL A., VACHER S., et al.

Summary

The evolution of the directives on the use of refrigerants, classified as greenhouse-gases, stimulates research on suitable replacement solutions. In the systems operating thanks to a mechanical vapour-compression cycle, technical solutions have started to emerge, based on the use of so-called natural refrigerants, such as propane and carbon dioxide. Propane has interesting transfer properties as compared to presently-used refrigerants. Research on increased system compactness with propane is a major issue in the development. Carbon dioxide has the particularity of being used in a transcritical cycle, in which the compressor discharge pressure is higher than the critical pressure (73.8 bars). The authors present these various elements, with the experimental results obtained on two vapour-compression system prototypes. The characteristics of the heat exchangers used and the measured thermal performances will be dealt with in particular.

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Details

  • Original title: Exemples de développements de pompe à chaleur aux fluides naturels : cas du propane et du CO2.
  • Record ID : 2009-1446
  • Languages: French
  • Source: Scientific symposium: industrial cooling and thermodynamic systems. The Pôle Cristal meetings. [CD-ROM + 4 DVDs]. / Colloque scientifique : froid industriel et systèmes thermodynamiques. Les rendez-vous du Pôle Cristal. [CD-ROM + 4 DVD].
  • Publication date: 2008/10/09

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