Technical note Copper oxide coatings for use in a linear solar Fresnel reflecting concentrating collector

Md.Kamrul Alam Khan

Renewable Energy, 1999, vol. 17, issue 4, 603-608

Abstract: Electroplating selective copper oxide coatings were prepared on the surface of a rectangular absorber (α = 0.92 and ε100°C = 0.18) for operation in conjunction with a prototype linear solar Fresnel reflecting concentrating collector. Overall heat loss coefficients (UL) of the selectively coated absorber at temperatures up to ∼300°C, optical efficiency (ηo) and stagnation temperature of the concentrator–absorber system were determined experimentally. The results have been compared with those obtained from an identical black painted absorber. Thermal efficiency (ηc) computed from the results of UL and ηo measurements at a temperature of 250°C provides a value of 49% with the selectively coated absorber and 48% with the black painted absorber.

Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:17:y:1999:i:4:p:603-608

DOI: 10.1016/S0960-1481(98)00023-8

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