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RESEARCH PAPERS

An Experimental Technique for Testing Thermosyphon Solar Hot Water Systems

[+] Author and Article Information
A. H. Fanney

Building Equipment Division, Center for Building Technology, National Bureau of Standards, Washington, D. C. 20234

J. Sol. Energy Eng 106(4), 457-464 (Nov 01, 1984) (8 pages) doi:10.1115/1.3267625 History: Received December 01, 1983; Online November 11, 2009

Abstract

An experimental technique for testing thermosyphon solar hot water systems is described which allows testing of the system indoors under nonirradiated conditions. The technique described is applicable to thermosyphon systems that utilize flat-plate solar collectors. Energy normally absorbed by the irradiated solar collectors is supplied by electric strip heaters attached to the back side of the absorber plates. Analytical expressions are developed that allow the power input to the strip heaters to be calculated for various environmental conditions. A description of the experimental apparatus and test procedure is given. Results are presented that show that the performance of a thermosyphon system tested under nonirradiated conditions using the electric strip heater technique closely duplicates system performance under outdoor irradiated conditions

Copyright © 1984 by ASME
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