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Frigorigènes utilisés pour remplacer le R22 dans les applications de conditionnement d'air et de pompes à chaleur : impact sur le TEWI.

Total equivalent warming impact of R22 alternatives in air-conditioning and heat pump applications.

Auteurs : GOPALNARAYANAN S., ROLOTTI G. D.

Résumé

Eight different refrigerants are evaluated as potential R22 substitutes. The performances of the refrigerants in cooling and heating modes are determined using a computer simulation. The volumetric flow rate for each refrigerant is adjusted to provide equal cooling capacity at the performance rating conditions of the system while keeping the heat exchanger sizes constant. The impact on global warming by using the refrigerants is determined based on both the direct contribution (assuming a 4% annual leak rate) as well as the indirect contribution from energy use arising from CO2 production at the power generation stage. The results indicate that from the point of view of energy efficiency as well as total equivalent warming impact (TEWI), R410A has the most favourable performance among nonflammable refrigerants.

Détails

  • Titre original : Total equivalent warming impact of R22 alternatives in air-conditioning and heat pump applications.
  • Identifiant de la fiche : 2000-1744
  • Langues : Anglais
  • Sujet : Environnement, Généralités
  • Source : ASHRAE Transactions. 1999 Winter Meeting, Chicago, Illinois + CD-ROM.
  • Date d'édition : 1999
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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