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Effet de l'huile sur la performance à l'ébullition au contact de surfaces structurées et poreuses.

Effect of oil on the boiling performance of structured and porous surfaces.

Auteurs : ZARNESCU V., WEBB R. L., CHIEN L. H.

Type d'article : Article

Résumé

R134a at 26.6 °C with 1, 2.5 and 5% polyester-ester oil concentration by mass was used as the working fluid. Pore diameter was not a major factor for the oil degradation of boiling performance. Tubes with 50 fins/in (0.51 mm fin spacing) and 0.9 mm fin height had a smaller oil degradation than the Turbo-B surface. The rectangular fin base substantially enhanced the boiling performance in pure refrigerant but in the presence of oil, this geometry performed poorly. For 5% oil concentration, the porous surface had a performance degradation similar to the Turbo-B tube.

Détails

  • Titre original : Effect of oil on the boiling performance of structured and porous surfaces.
  • Identifiant de la fiche : 2001-0702
  • Langues : Anglais
  • Source : HVAC&R Research - vol. 6 - n. 1
  • Date d'édition : 01/2000
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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