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Document IIF

Recherches expérimentales sur les coefficients de transfert de chaleur dans les échangeurs de chaleur cryogéniques à contre-courant à serpentin.

Experimental research on heat transfer coefficients for cryogenic cross-counter-flow coiled finned-tube heat exchangers.

Auteurs : GUPTA P. K., KUSH P. K., TIWARI A.

Type d'article : Article, Article de la RIF

Résumé

The aim of this experimental research is to find out the suitable correlations for designing the coiled finned-tube heat exchangers used in cryogenic applications. In order to conduct above experimental study, cross-counter-flow coiled finned-tube heat exchangers were developed in our lab and used in actual refrigeration cycle. The experiments were conducted in the range of effective Reynolds number 500-1900. The effect of diametrical clearance on the prediction of overall heat transfer coefficient is also investigated experimentally. The results from present study were compared in the form of overall heat transfer coefficient. Results of present experimental research indicate that different correlations selected in the study can be used with reasonable accuracy for designing the coiled finned-tube heat exchangers, if they are applied with suitable method of calculation of free-flow cross-sectional area. A more accurate new correlation has also been proposed that fitted experimental data within plus or minus 10% error band.

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Format PDF

Pages : 960-972

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 : Experimental research on heat transfer coefficients for cryogenic cross-counter-flow coiled finned-tube heat exchangers.
  • Identifiant de la fiche : 2009-1420
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 5
  • Date d'édition : 08/2009

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