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Pompes à chaleur à puissance variable pour le conditionnement d'air résidentiel utilisant un frigorigène de remplacement.

Variable capacity heat pumps for residential air conditioning employing an alternative refrigerant.

Auteurs : SAKAMOTO M.

Résumé

Annual production of a residential air conditioner, RAC, has levelled off at around 6.5 million units for the past several years. A ductless split model with a reversible, R22-based cycle driven by a variable speed compressor, known as an inverter heat pump, dominates Japanese RAC design. In fact, 95% of the total production in 1999 is a heat pump model for heating/cooling service. 88% employs an inverter driven compressor whose capacity is varied by changing its speed from 600 to 6000 rpm. Japanese RAC makers have made attempts to develop and market models that employ an alternative refrigerant for R22 and consume less electric power. Now that they have established techniques and skills involved in the application of R410A, some of the major manufacturers have added several R410A models to their product lines. Energy efficiency of the new models exceeds the minimum efficiency requirements for heat pumps covered by the new energy standard and that of the current R22 models.

Détails

  • Titre original : Variable capacity heat pumps for residential air conditioning employing an alternative refrigerant.
  • Identifiant de la fiche : 2005-0425
  • Langues : Anglais
  • Source : Hands-on experience with heat pumps in buildings. Workshop report [CD-ROM].
  • Date d'édition : 10/10/2001

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