Efficiency of fresnel lenses with respect to thermal losses

Pramod Kumar Gupta

Applied Energy, 1982, vol. 12, issue 2, 87-98

Abstract: Experimental observations and heat loss calculations for a Fresnel lens under forced and natural convection have both been obtained. A lens with a 2·0 mm step width and 325·99 cm2 area when exposed to solar radiation and kept normal to solar radiation with an intensity of 43·116 cal/cm2/h has given a steady-state temperature of 187·5°C at its focus.

Date: 1982
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