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Un nouveau concept et système de refroidissement à potentiel nul de destruction de la couche d'ozone et émissions quasi-nulles de gaz à effet de serre.

A novel cooling concept and system with zero ozone depletion potential and near zero greenhouse gas emissions.

Auteurs : SHARMA S. D., DUFFY G. J., CARRAS J. N., et al.

Résumé

A novel desorption cooling concept based on cooling by desorption of natural refrigerant gases such as carbon dioxide has been proposed. This concept does not use compressor and has minimum moving parts. Based on this concept a desorption cooling module has been developed and tested in the laboratory. The COP of the single module was approximately estimated around 0.06 due to several unaccounted heat losses. A laboratory unit with about 102 desorption cooling modules has also been developed to minimise to eliminate the effect of unknown heat losses accurately estimate the cooling capacity and COP. The COP of this laboratory unit was found to be around 0.12-0.15 and further heat recycling from the regenerator exit stream could be a way to further improve the COP. It is also proved that the cooling temperature depends on the regeneration temperature but between 150 and 200°C, the extent of cooling is insignificantly changed. The desorption cooler could also be operated with a low grade heat at a temperature as low as 50°C and with an internal heat recovery option, a higher COP should be possible. The desorption cooler is a modular design which consists of completely sealed modules where the natural refrigerant with lower GWP has least chance to escape to the atmosphere.

Détails

  • Titre original : A novel cooling concept and system with zero ozone depletion potential and near zero greenhouse gas emissions.
  • Identifiant de la fiche : 2009-0606
  • Langues : Anglais
  • Source : 9th IEA Heat Pump Conference 2008: advances and prospects in technology, applications and markets. Conference proceedings [CD-ROM + abstracts].
  • Date d'édition : 20/05/2008

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