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Performance en termes de transfert de chaleur d'un caloduc à pulsation utilisant des mélanges d'eau et d'éthanol comme fluide actif.

Heat transfer performance of pulsating heat pipe with water-ethanol mixed working fluid.

Numéro : pap. n. 780

Auteurs : SUI Y., CUI X. Y., HAN H.

Résumé

The heat transfer performance of a closed-loop pulsating heat pipe (PHP) with water-ethanol mixtures was studied by experiments. The heat transfer performance with water-ethanol volume ratio of 13:1, 2:1, 1:1, 1:2, 1:13 were compared with pure water and ethanol working fluids at the same filling ratio of 45% to 70% and heat inputs of 10W to 100W. Experimental results indicated that, at lower filling ratio, the thermal resistance of water-ethanol PHP is smaller than pure water and ethanol PHPs; and at higher filling ratio, the heat transfer performance is generally better, and the heat transfer performance of water-ethanol PHP is almost the same as ethanol PHP. It can be deduced that, the heat transfer performance of water-ethanol PHP depended on the filling ratio and the volume ratio, which may be related to vapour-liquid balance, physical properties and the concentration gradient in both gas and liquid phases.

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Pages : 8 p.

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Détails

  • Titre original : Heat transfer performance of pulsating heat pipe with water-ethanol mixed working fluid.
  • Identifiant de la fiche : 30015463
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0780

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