Expressions for absorptance of the cover plates with/without an absorbing surface
- 1 January 1983
- journal article
- Published by Hindawi Limited in International Journal of Energy Research
- Vol. 7 (2) , 101-108
- https://doi.org/10.1002/er.4440070202
Abstract
Expressions are obtained for calculating the fraction of insolation absorbed by each plate of a cover system for solar thermal devices having n non‐identical plates in the presence/absence of an absorbing surface below the cover system. The average angle of incidence, averaged over 277 clear days of 1974, is obtained for the absorbing surface and for a cover system having one, two or three plates.Keywords
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