High Temperature

, Volume 56, Issue 2, pp 302–305 | Cite as

Heat Transfer in a Water Flow in Tubes with Ribbed Twisted Tape Inserts

  • A. A. Giniyatullin
  • S. E. Tarasevich
  • A. B. Yakovlev
Short Communications
  • 2 Downloads

Abstract

The results of an experimental study of heat transfer in a water flow in a channel with a twisted tape insert with discrete ribs installed at an angle to the tape axis are presented. The experiments were performed in a straight smooth tube with an inner diameter of 10 mm. The tape inserts had a twist ratio of 2.5, 3, or 4 with a 180° rotation; the rib height ranged from 0.5 to 1.5 mm, the rib pitch was from 40 to 120 mm, and the rib angle was from 40 to 50° to the tape axis. The results of experiments in the mentioned range of geometries suggest that the ribbed tape inserts increase heat transfer by a maximum of 40% as compared with that in tubes with a twisted tape without ribs. The generalized correlation is given for the prediction of heat transfer in a Reynolds number range Re = 104‒2 × 105.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. A. Giniyatullin
    • 1
  • S. E. Tarasevich
    • 1
  • A. B. Yakovlev
    • 1
  1. 1.Kazan National Research Technical University named after A.N. Tupolev–KAIKazanRussia

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