Analysis of a Load-Side Heat Exchanger for a Solar Domestic Hot Water Heating System

[+] Author and Article Information
T. R. Smith, P. J. Burns, D. C. Hittle

Colorado State University, Mechanical Engineering Department, Solar Energy Applications Lab, SH II, Fort Collins, CO 80523

J. Sol. Energy Eng 120(4), 270-274 (Nov 01, 1998) (5 pages) doi:10.1115/1.2888130 History: Received January 01, 1996; Revised June 01, 1998; Online February 14, 2008


Testing is done of an unpressurized drainback system with a load-side heat exchanger. Analytical calculations for the heat exchanger effectiveness and three models for convective heat transfer coefficients from correlations are compared against the experimental data. TRNSYS simulations were performed using the average effectiveness of 0.78 (the calculated effectiveness varies from 0.68 to 0.95); the results compare favorably with experimental results, indicating that a constant effectiveness is an adequate model for the system.

Copyright © 1998 by The American Society of Mechanical Engineers
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