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Rôle des plaques d’extrémité sur le transfert de chaleur d’un échangeur de chaleur à plaques.

Effect of end plates on heat transfer of plate heat exchanger.

Numéro : pap. 2337

Auteurs : JIN S., HRNJAK P.

Résumé

Steady-state heat transfer data for single-phase (water) in both frame-and-plate (FPHE) and brazed plate heat exchangers (BPHE) are presented with various number of chevron plates in U-type flow arrangement. Analysis of the experimental results indicates that the end plates, instead of being adiabatic, function as fins due to the contact with adjacent plates. The experimental data is used to validate a thermal conduction model in ANSYS, which indicates that the end plates fin efficiency is a function of fluid convective heat transfer coefficient and conductive thermal resistance. In the frame-and-plate heat exchanger, the pressing force of the frame may affect the contact thermal resistance, thus change the fin efficiency. In brazed plate heat exchanger, the fin efficiency is much higher due to the larger contact area and higher conductivity of the brazing material. Although the effect of end plates is quickly diluted by the increased number of plates in real applications, it could be significant when plate number is small, as is often the case in laboratory settings for the development of heat transfer correlations.

Documents disponibles

Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : Effect of end plates on heat transfer of plate heat exchanger.
  • Identifiant de la fiche : 30018961
  • Langues : Anglais
  • Source : 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 11/07/2016

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