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Pool boiling heat transfer at finned tubes: influence of surface roughness and shape of the fins.

Author(s) : HÜBNER P., KÜNSTLER W.

Type of article: Article, IJR article

Summary

Pool boiling heat transfer from finned tubes with different shapes of fins (trapezoid-shaped, T-shaped, or Y-shaped) to various hydrocarbons and partly fluorinated hydrocarbons has been investigated at the Laboratorium für Wärme- und Kältetechnik, Universität-GH Paderborn recently. Compared to corresponding measurements on plain tubes, heat transfer on traditionally finned tubes with trapezoid-shapes fins is considerably improved, and even better results are achieved with T-shaped or Y-shaped fins. The influences of the macrostructure (i.e. fin geometry) or microstructure (i.e. surface roughness) on the heat transfer coefficient have been studied separately, in order to evaluate the improvement of heat transfer by either influence.

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Pages: 575-582

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Details

  • Original title: Pool boiling heat transfer at finned tubes: influence of surface roughness and shape of the fins.
  • Record ID : 1998-2222
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 8
  • Publication date: 1997/12

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