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Caractéristiques du refroidissement par pulvérisation de l'eau et du R134a. 1. Ebullition nucléée.

Spray cooling characteristics of water and R134a. 1. Nucleate boiling.

Auteurs : HSIEH S. S., FAN T. C., TSAI H. H.

Type d'article : Article

Résumé

An experimental study was made in the first of two papers to determine the effect of liquid sprays used to cool a hot surface. Both pure water and R134a were served as a working medium sprayed from a single circular nozzle onto a Cu (oxygen free) metal of an electrically heated surface which was heated to an initial temperature with a range of wall superheat for steady-state nucleate boiling experiments using thermocouples for heat transfer measurements. Cooling characteristics (boiling curves) were obtained over a range of spray mass flux, Weber number, wall superheat and degree of subcooling. Boiling visualization was also conducted with varied heat flux levels at a specified We for R134a and water. (See also this Bulletin, reference 2005-0631.)

Détails

  • Titre original : Spray cooling characteristics of water and R134a. 1. Nucleate boiling.
  • Identifiant de la fiche : 2005-0630
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 26
  • Date d'édition : 12/2004

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