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Optimization and modelling of a CO2 heat pump.

Optimisation et modélisation d'une thermofrigopompe au CO2.

Author(s) : BYRNE P., MIRIEL J., LÉNAT Y., et al.

Summary

Nowadays hydrofluorocarbons (HFCs) are the most common fluids in refrigeration devices. The Kyoto Protocol classifies these refrigerants in the category of greenhouse gases responsible for global warming. In the future, HFCs are likely to be banned and replaced by natural fluids like carbon dioxide. The performances of CO2 are interesting in transcritical cycles. However, the CO2 transcritical cycle requires the use of high pressures (around 100 bars). The CO2 heating cooling pump (HCP) is intended to produce domestic hot water (DHW) and to heat and cool residential and commercial buildings. Focusing on energy efficiency and improvement of performances, the HCP presents an innovative design of the refrigeration circuit, intelligent operating modes and a new defrosting system. The simulation results show that the HCP offers good performances and enables an efficient defrosting without stopping the production of DHW and hot water for space heating.

Details

  • Original title: Optimisation et modélisation d'une thermofrigopompe au CO2.
  • Record ID : 2008-1322
  • Languages: French
  • Publication date: 2006/11/20
  • Source: Source: Climamed 2006, Lyon
    PI-3.5; 379-388; fig.; tabl.; 13 ref.

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