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Document IIF

Ébullition en écoulement de HFC32 et de HFC410A à l'intérieur d'un tube horizontal lisse de 4?mm.

HFC32 and HFC410A flow boiling inside a 4?mm horizontal smooth tube.

Auteurs : LONGO G. A., MANCIN S., RIGHETTI G., et al.

Type d'article : Article, Article de la RIF

Résumé

This paper presents the comparative analysis of HFC32 and HFC410A during vaporisation inside a 4?mm smooth tube. The experimental tests were carried out at three different saturation temperatures (5, 10, and 20°C) at increasing vapour quality up to incipient dryout to evaluate the specific contribution of heat flux, refrigerant mass flux, mean vapour quality, and saturation temperature (pressure). HFC32 and HFC410A heat transfer coefficients exhibit great sensitivity to heat flux and weak sensitivity to refrigerant mass flux and mean vapour quality and this tendency is particularly evident for increasing saturation temperature (pressure) and is more relevant for HFC410A refrigerant. HFC32 and HFC410A frictional pressure drops show great sensitivity to saturation temperature (pressure), refrigerant mass flux and mean vapour quality and weak or null sensitivity to heat flux. HFC32 exhibits heat transfer coefficients and frictional pressure drops higher than those of HFC410A under the same operating conditions.

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Format PDF

Pages : 12-22

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    20 €

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    Gratuit

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Détails

  • Titre original : HFC32 and HFC410A flow boiling inside a 4?mm horizontal smooth tube.
  • Identifiant de la fiche : 30016469
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 61
  • Date d'édition : 01/2016

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