A fresnel strip reflector-concentrator for tubular solar-energy collectors
A linear Fresnel reflector-concentrator employing commercial flat, front-reflecting mirror strips (of reflectivity [varrho] = 0·6), arranged in a planar configuration, has been fabricated and analyzed. An average concentration ratio of about 18 has been obtained for two-thirds of the periphery of a tubular receiver of 0·025 m diameter. Working in conjunction with a partially evacuated (10-2 Torr) cylindrical collector employing a selective cobalt oxide coating (with [alpha] = 0·88, [epsilon]250°C = 0·25 and stable up to 600°C), a stagnation temperature of ~ 385°C has been obtained, corresponding to a direct solar flux of ~ 600 W/m2.
Year of publication: |
1986
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Authors: | Choudhury, C. ; Sehgal, H.K. |
Published in: |
Applied Energy. - Elsevier, ISSN 0306-2619. - Vol. 23.1986, 2, p. 143-154
|
Publisher: |
Elsevier |
Saved in:
Online Resource
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