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Prévision du coefficient de transfert de chaleur par ébullition en écoulement pour du dioxyde de carbone dans des minicanaux.

Wyznaczanie wspólczynnika przejmowania ciepla podczas wrzenia w przeplywie dwutlenku wegla.

Auteurs : MIKIELEWICZ D., JAKUBOWSKA B.

Type d'article : Article

Résumé

In the paper presented is the analysis of the results of calculations using a model to predict flow boiling of carbon dioxide. The model was verified with the experimental data due to Docoulombier et al. (2011) and Mastrullo et al. (2009). The experimental research was conducted for a full range of quality variation and a relatively wide range of mass velocity. The aim of present study was to test the sensitivity of developed model of two-phase flow multiplier and the nonadiabatic effects. For that purpose two models have been analyzed namely due to Müller-Steinhagen and Heck correlation, Friedel correlation and introducing into the model the so called blowing parameter. Furthermore, in the paper shows the behavior of the heat transfer coefficient, when effect of bubbles generation is omitted and when the impact of flow resistance is omitted. In addition, the work shows the importance of taking into account in the calculation of the flow structure surface tension.

Détails

  • Titre original : Wyznaczanie wspólczynnika przejmowania ciepla podczas wrzenia w przeplywie dwutlenku wegla.
  • Identifiant de la fiche : 30013954
  • Langues : Polonais
  • Source : Chlodnictwo - vol. 50 - n. 1-2
  • Date d'édition : 01/2015
  • DOI : http://dx.doi.org/10.15199/8.2015.1-2.2

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