Photothermal performance of selective black nickel coatings

Gogna, P. K. ; Chopra, K. L. ; Mullick, S. C. (1980) Photothermal performance of selective black nickel coatings International Journal of Energy Research, 4 (4). pp. 317-322. ISSN 0363-907X

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Selective black nickel coatings with solar absorptance (αs = 0.94) and thermal emittance (ε = 0.08) at 100°C have been developed on galvanized steel using electroplating and chemical conversion techniques. Thermal performance tests have been conducted on selective and non-selective collectors with single glass cover. A suitable collector test assembly has been constructed for thermal performance study. Measurements have been made under clear sky conditions over a wide range of inlet temperatures. For comparison, measurements have been carried out on an identical collector painted black. Thermal efficiencies of about 28 per cent at an operating water temperature =100°C ambient temperature=35°C and incident insolation=1000 W/m2 have been obtained.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Solar Energy; Solar Collectors; Selective Surfaces
ID Code:69107
Deposited On:08 Nov 2011 10:43
Last Modified:08 Nov 2011 10:43

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