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RESEARCH PAPERS

Augmentation of Laminar Flow Heat Transfer in Tubes by Means of Wire Coil Inserts

[+] Author and Article Information
S. B. Uttarwar, M. Raja Rao

Department of Chemical Engineering, Indian Institute of Technology, Bombay 400076, India

J. Heat Transfer 107(4), 930-935 (Nov 01, 1985) (6 pages) doi:10.1115/1.3247523 History: Received September 02, 1983; Online October 20, 2009

Abstract

Experimental studies have been carried out on isothermal pressure drop and convective heat transfer to servotherm medium grade oil in laminar flow in one smooth tube and seven wire coil-inserted tubes of varying wire diameter and pitch of wire coil. The performance of these wire coil inserted tubes has been evaluated by two different criteria based on the objective of either maximizing heat transfer rate or minimizing exchanger size. The results indicated that as much as fourfold improvement can be obtained in laminar flow heat transfer coefficient using these tubes.

Copyright © 1985 by ASME
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