Partager

Document IIF

Conception thermodynamique des condenseurs et des évaporateurs: formulation et applications.

Thermodynamic design of condensers and evaporators: formulation and applications.

Auteurs : HERMES C. J. L.

Type d'article : Article, Article de la RIF

Résumé

This paper assesses the thermo-hydraulic design approach introduced in a previous publication (Hermes, 2012) for condensers and evaporators aimed at minimum entropy generation. An algebraic model which expresses the dimensionless rate of entropy generation as a function of the number of transfer units, the fluid properties, the thermal-hydraulic characteristics, and the operating conditions is derived. Case studies are carried out with different heat exchanger configurations for small-capacity refrigeration applications. The theoretical analysis led to the conclusion that a high effectiveness heat exchanger does not necessarily provide the best thermal-hydraulic design for condenser and evaporator coils, when the rates of entropy generation due to heat transfer and fluid friction are of the same order of magnitude. The analysis also indicated that a high aspect ratio heat exchanger produces a lower amount of entropy than a low aspect ratio one.

Documents disponibles

Format PDF

Pages : 633-640

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 : Thermodynamic design of condensers and evaporators: formulation and applications.
  • Identifiant de la fiche : 30007245
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 2
  • Date d'édition : 03/2013

Liens


Voir d'autres articles du même numéro (26)
Voir la source

Indexation