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RESEARCH PAPERS

Performance of Solar Domestic Hot Water Systems at the National Bureau of Standards—Measurements and Predictions

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

Solar Equipment Group, National Bureau of Standards, Washington, D.C. 20234

S. A. Klein

National Bureau of Standards, Solar Energy Laboratory, University of Wisconsin, Madison, Wis. 53706

J. Sol. Energy Eng 105(3), 311-321 (Aug 01, 1983) (11 pages) doi:10.1115/1.3266384 History: Received October 22, 1982; Online November 11, 2009

Abstract

The thermal performance of six solar domestic hot water systems and a conventional hot water system have been carefully monitored by the National Bureau of Standards in Gaithersburg, Maryland. The system configurations include an evacuated-tube air system with a crossflow heat exchanger and two storage tanks, a single-tank direct system, a double-tank direct system, a single-tank indirect system with a wrap-around heat exchanger, a double-tank indirect system with a coil-in-tank heat exchanger, and a thermosyphon system. Results are presented for a one-year time interval commencing January 1980. This paper includes a detailed description of the hot-water systems, experimental test results, and comparisons with computer predictions using the f-chart method [1].

Copyright © 1983 by ASME
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