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Document IIF

Calcul du transfert de chaleur pour les pompes à chaleur à absorption sous des conditions de débit variable.

Heat transfer calculation for absorption heat pumps under variable flow rate conditions.

Auteurs : ALBERS J., ZIEGLER F.

Résumé

An extended method of characteristic equations has been derived, which is more accurate and can be applied to off-rated or variable flow rate conditions also. The influence of variable flow rates on the heat transfer is incorporated by means of heat transmission ratios and temperature difference ratios. The latter can be derived from frequently used dimensionless numbers in heat transfer calculations, i.e. without the knowledge of internal temperatures. For the former ones, it is shown that they can be determined satisfactorily if only one ratio of internal to external heat transfer coefficients per heat exchanger can be y estimated roughly.

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Format PDF

Pages : 813-822

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Heat transfer calculation for absorption heat pumps under variable flow rate conditions.
  • Identifiant de la fiche : 30001284
  • Langues : Anglais
  • Source : Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
  • Date d'édition : 06/04/2011

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