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Une nouvelle représentation graphique des pertes de travail sur le diagramme T-s pour les cycles frigorifiques et les cycles de pompe à chaleur.

A novel graphic representation of the work losses on T-s diagram for refrigeration and heat pump cycles.

Numéro : 0421

Auteurs : YAMADA H., SAIKAWA M.

Résumé

The objective of the present research is to represent work losses in the cycle processes as areas on a T-s diagram in the case where the ideal cycle is a reversed Lorentz cycle. First, a theoretical cycle with hot and cold streams was calculated and defined for cases of both refrigeration and heat pump cycles. Then, the difference in the work requirements between theoretical and ideal cycles was divided into work losses caused by the entropy generation in each of the components. It emerged that the work losses were able to be represented as areas on a T-s diagram. Therefore, it can be concluded that novel graphic representation is a useful method to understand processes which should be improved visually and easily to enhance performance of refrigeration systems and heat pumps.

Documents disponibles

Format PDF

Pages : 12

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 : A novel graphic representation of the work losses on T-s diagram for refrigeration and heat pump cycles.
  • Identifiant de la fiche : 30031411
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0421

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