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Document IIF

Possibilités d'amélioration des conditions de fonctionnement thermodynamique des pompes de chaleur en vue de la récupération de chaleur.

Possibilities of improving the thermodynamic working conditions of heat pumps for heat recovery.

Auteurs : NOWOTNY S.

Type d'article : Article, Article de la RIF

Résumé

The possibility of improving the performance of heat pump systems when the source temperature is 40°C and the duty temperature is 80°C is investigated. Normal single-stage or two-stage vapour compression systems using either R11, R12, R21 or ammonia are taken as the starting point. The advantages of using compression superheat, especially with R 12, are demonstrated. The Altenkirch cycle in which ammonia, desorbed from an aqueous solution at the heat sink temperature, is mechanically compressed and then re-absorbed at the heating duty temperature, is studied. It is concluded that the reduced power consumption of this cycle more than compensates for its higher capital cost.

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Format PDF

Pages : 171-175

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Possibilities of improving the thermodynamic working conditions of heat pumps for heat recovery.
  • Identifiant de la fiche : 30000827
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 2 - n.3
  • Date d'édition : 05/1979

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