Collector performance enhancement with flat reflectors

The use of diffuse and specular flat reflectors to enhance the performance of flat-plate solar collectors has been explored by means of Fortran routines which optimize the size, shape, and placement of reflector and collector. Configuration factors for systems with a diffuse reflector and a collecto...

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Bibliographic Details
Published in:Solar energy 1975-01, Vol.17 (5), p.291-295
Main Author: Seitel, Steven C.
Format: Article
Language:English
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Summary:The use of diffuse and specular flat reflectors to enhance the performance of flat-plate solar collectors has been explored by means of Fortran routines which optimize the size, shape, and placement of reflector and collector. Configuration factors for systems with a diffuse reflector and a collector whose absorptance varies with incidence angle are presented. Specular reflectors are more effective than diffuse reflectors, and, if south-facing, should be used with collectors which are elongated in the east-west direction. Design curves for the specific system of horizontal collector and south-facing reflector are presented. In this system, a moderately sized reflector can increase the midwinter yield per unit collector area by several times.
ISSN:0038-092X
1471-1257
DOI:10.1016/0038-092X(75)90046-8