Notes on Optical Design Principles, Concentration Ratios, and Maximum Temperatures of Parabolic Solar Furnaces.
AIR FORCE MISSILE DEVELOPMENT CENTER HOLLOMAN AFB N MEX
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The memorandum is intended as a preliminary guide to designers and interested possible users of solar furnaces. Optical design principles are summarized briefly, and a simple expression is derived for the solar concentration ratio obtainable from a perfectly reflecting paraboloid of large aperture. The transmission losses necessarily occuring in an actual furnace are considered and estimated, and estimates are presented as to the concentration ratios obtainable with actual solar furnaces of various apertures. The maximum attainable temperatures of such furnaces, when operating under favorable sunshine conditions, is similarly estimated. A short bibliography is included.
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