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Document IIF

Etude de différents transferts de vapeur internes pour les cycles à régénération de chaleur.

Study of different internal vapour transport for adsorption cycles with heat regeneration.

Auteurs : SZARZYNSKI S., FENG Y., PONS M.

Type d'article : Article, Article de la RIF

Résumé

A "three-temperature" model of the adsorption cycles with heat regeneration is used for investigating and analysing the influence of different parameters on the performance of such cycles. The influence of the heat source temperature on the thermodynamic efficiency (COP/COP, Carnot) is investigated. The result is that the thermodynamic efficiency of the cycle is always limited. In order to reduce the thermal irreversibilities, different internal vapour transports for pressurising (depressurising) the adsorber are investigated: 1) adiabatic direct pressurisation (depressurisation) with the condenser (evaporator) instead of pressure changes by heat transfer; 2) adiabatic internal vapour recovery between the adsorbers (partial pressurisation/depressurisation); 3) separation of the adsorber into separate compartments between which vapour cannot be redistributed during pressurisation or depressurisation. Results show that the first process significantly reduces the COP, while the second one enhances the cooling power, and the third one does not change the performance. Analysis gives satisfactory explanation of these results.

Documents disponibles

Format PDF

Pages : 390-401

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 : Study of different internal vapour transport for adsorption cycles with heat regeneration.
  • Identifiant de la fiche : 1998-1636
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 6
  • Date d'édition : 09/1997

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