Application of Exergy Concept to the Analysis of Optimum Operating Conditions of Solar Heat Collectors

[+] Author and Article Information
A. Suzuki, I. Oshida

Department of Physics, Sophia University, Tokyo, Japan 102

H. Okamura

Department of Mechanical Engineering, Sophia University, Tokyo, Japan 102

J. Sol. Energy Eng 109(4), 337-342 (Nov 01, 1987) (6 pages) doi:10.1115/1.3268226 History: Received June 01, 1986; Online November 11, 2009


A linear model was developed to obtain the relationships between the characteristic temperatures of the solar heat collector (e.g., the fluid outlet temperature) and the heat capacitance rate of the heat transfer medium. Combining these relationships and the exergy concept, we derived the optimum operating conditions in a general form to satisfy the requirements for the optimum outlet temperature. The optimum operating conditions can be used as a criterion when an appropriate collector type must be chosen for any particular solar application system. To confirm the analytical results, experiments were carried out with a simple flat-plate type solar collector. Good agreement could be obtained between the theoretical values and the experimental results.

Copyright © 1987 by ASME
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