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Etude théorique du transfert de chaleur par évaporation dans des tubes à micro-ailettes horizontaux : modèle d'écoulement stratifié.

Theoretical study of evaporation heat transfer in horizontal microfin tubes: stratified flow model.

Auteurs : HONDA H., WANG Y. S.

Type d'article : Article

Résumé

The stratified flow model of evaporation heat transfer in helically grooved, horizontal microfin tubes has been developed. The profile of stratified liquid was determined by a theoretical model previously developed for condensation in horizontal microfin tubes. For the region above the stratified liquid, the meniscus profile in the groove between adjacent fins was determined by a force balance between the gravity and surface tension forces. The thin film evaporation model was applied to predict heat transfer in the thin film region of the meniscus. Heat transfer through the stratified liquid was estimated by using an empirical correlation proposed by Mori et al. The theoretical predictions of the circumferential average heat transfer coefficient were compared with available experimental data for four tubes and three refrigerants.

Détails

  • Titre original : Theoretical study of evaporation heat transfer in horizontal microfin tubes: stratified flow model.
  • Identifiant de la fiche : 2005-0624
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 17-18
  • Date d'édition : 08/2004

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