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RESEARCH PAPERS

Analytical Equation for the Top Heat Loss Factor of a Flat-Plate Collector With Double Glazing

[+] Author and Article Information
S. K. Samdarshi, S. C. Mullick

Centre for Energy Studies, Indian Institute of Technology, New Delhi 110 016, India

J. Sol. Energy Eng 113(2), 117-122 (May 01, 1991) (6 pages) doi:10.1115/1.2929955 History: Received March 05, 1990; Revised July 05, 1990; Online June 06, 2008

Abstract

An analytical equation for the top heat loss factor of a flat-plate collector with double glazing has been developed. The maximum computational errors resulting from the use of this equation are plus or minus three percent compared to numerical solution of the heat balance equations. The equation is considerably more accurate than the currently used semi-empirical equations over the entire range of variables covered. It is found that the computational errors resulting from simplification of the proposed equation by approximation of the individual heat-transfer coefficients are much lower than the errors resulting from the use of semi-empirical equations.

Copyright © 1991 by The American Society of Mechanical Engineers
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