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RESEARCH PAPERS

Natural Convection Heat Transfer for a Concentric Tube Thermosiphon

[+] Author and Article Information
J. L. Steimke

E. I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, SC 29806

J. Heat Transfer 107(3), 583-588 (Aug 01, 1985) (6 pages) doi:10.1115/1.3247464 History: Received March 10, 1983; Online October 20, 2009

Abstract

Natural convection heat transfer for a single-phase thermosiphon formed by two concentric tubes and a central rod filled with water is studied theoretically and experimentally. The two annuli between the tubes and the rod are joined at the top and bottom and form a flow loop. The middle tube is heated while the outer tube is cooled. In this one-dimensional model equations for continuity, momentum, and energy for steady laminar flow are written and solved numerically. There is reasonably good agreement between the analytically and experimentally determined temperatures and convective velocities in the thermosiphon.

Copyright © 1985 by ASME
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