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Flow boiling and frictional pressure gradients in plate heat exchangers. 2. Comparison of literature methods to database and new prediction methods.

Écoulement en ébullition et gradients de pression dus à la friction dans les échangeurs de chaleur à plaques. 2. comparaison des méthodes de la littérature avec des méthodes nouvelles de prévision et par base de données.

Auteurs : AMALFI R. L., VAKILI-FARAHANI F., THOME J. R.

Type d'article : Article, Article de la RIF

Résumé

In the second part of this study a sensitivity analysis on the prediction methods is performed to consider the effect of plate geometry on thermal–hydraulic performance and an extensive comparison of all the two-phase pressure drop and flow boiling heat transfer prediction methods available in the open literature are also provided versus the large diversified database presented in Part 1. The experimental databank, from numerous independent research studies, is then utilized to develop the new prediction methods to evaluate local heat transfer coefficients and pressure drops. These new methods were developed from 1903 heat transfer and 1513 frictional pressure drop data points (3416 total), respectively, and were proved to work better over a very wide range of operating conditions, plate designs and fluids (including ammonia). The prediction for flow boiling heat transfer coefficients was broken down into separate macro- and micro-scale methods.

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Format PDF

Pages : 185-203

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Détails

  • Titre original : Flow boiling and frictional pressure gradients in plate heat exchangers. 2. Comparison of literature methods to database and new prediction methods.
  • Identifiant de la fiche : 30016566
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 61
  • Date d'édition : 01/2016

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