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Caractéristiques du transfert de chaleur lors de l'ébullition libre nucléée d'un mélange frigorigène / nanolubrifiant contenant un agent tensio-actif.

Nucleate pool boiling heat transfer characteristics of refrigerant/nanolubricant mixture with surfactant.

Auteurs : HU H., PENG H., DING G.

Type d'article : Article, Article de la RIF

Résumé

The objective of this paper is to investigate the nucleate pool boiling heat transfer characteristics of refrigerant/nanolubricant mixture with surfactant. In the experiments, three types of surfactants including SDS, CTAB and Span-80 were used. Nanolubricant was formed from Cu nanoparticles and oil VG68. The results show that, the ratio of heat transfer coefficient of refrigerant/nanolubricant mixture with surfactant to that without surfactant (defined as surfactant impact factor, SIF) are within 0.85-1.58, 0.73-1.31, and 0.68-1.24 for SDS, CTAB and Span-80, respectively. The values of SIF increase with the increase of surfactant concentration and then decrease, and increase with the decrease of surfactant molecular weight, nanolubricant concentration and heat flux. A nucleate pool boiling heat transfer correlation for refrigerant/nanolubricant mixture was proposed, and it agrees well with the experimental data of refrigerant/nanolubricant mixture with surfactant and that without surfactant.

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Format PDF

Pages : 1045-1055

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    20 €

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Détails

  • Titre original : Nucleate pool boiling heat transfer characteristics of refrigerant/nanolubricant mixture with surfactant.
  • Identifiant de la fiche : 30008035
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 3
  • Date d'édition : 05/2013

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