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RESEARCH PAPERS

Pressure Drop During Forced Convection Boiling of R-12 Under Swirl Flow

[+] Author and Article Information
K. N. Agrawal, H. K. Varma

Mechanical and Industrial Engineering, University of Roorkee, Roorkee, U.P., India

S. Lal

Indian Institute of Technology, Kharagpur, W. Bengal, India

J. Heat Transfer 104(4), 758-762 (Nov 01, 1982) (5 pages) doi:10.1115/1.3245196 History: Received April 19, 1982; Online October 20, 2009

Abstract

This investigation deals with the pressure drop during forced convection boiling of R-12 under swirl flow inside a horizontal tube. Plain flow and swirl flow pressure drop data are reported for an electrically heated, horizontal, stainless steel, round test-section fitted with twisted tapes having twist ratios from 3.76 to 10.15. A correlation has been presented expressing the swirl flow boiling pressure drop in terms of the twist ratio and the plain flow boiling pressure drop calculated by the Martinelli-Nelson model. The proposed correlation predicts the swirl flow data to within ± 20 percent of the observed values.

Copyright © 1982 by ASME
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