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Etude expérimentale des coefficients de transfert de chaleur et chute de pression lors de la vaporisation de R134a dans un échangeur de chaleur à plaques brasées commercial.

Experimental heat transfer coefficients and pressure drop during refrigerant R134a vaporisation inside a commercial brazed plate heat exchanger.

Auteurs : LONGO G. A., GASPARELLA A.

Résumé

This paper presents the experimental heat transfer coefficients and pressure drop measured during refrigerant R134a vaporisation inside a commercial brazed plate heat exchanger (BPHE). The BPHE tested consists of 10 plates 72 mm in width and 310 mm in length, which present a macro-scale herringbone corrugation with inclination angle around 65° and corrugation amplitude of 2 mm. The experimental set-up is fully described together with measurements, procedures, data reduction and accuracy. The effects of heat flux, refrigerant mass flux and pressure were investigated. The experimental heat transfer coefficients were compared against semi-empirical correlations.

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Pages : 2005-3

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Détails

  • Titre original : Experimental heat transfer coefficients and pressure drop during refrigerant R134a vaporisation inside a commercial brazed plate heat exchanger.
  • Identifiant de la fiche : 2006-0578
  • Langues : Anglais
  • Source : Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
  • Date d'édition : 02/08/2005

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