Solar Absorber for Concentrated Solar Power Generation
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United States of America Patent
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Issued Date -
Mar 6, 2014
app pub date -
Nov 8, 2013
filing date -
Mar 7, 2012
priority date (Note) -
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Abstract
A solar absorber for a concentrated solar power (CSP) system includes a cylindrically shaped blackbody cavity receiver fused to a cylindrically shaped heat exchanger shell covering the receiver to form a monolithic cavity receiver and heat exchanger. An exterior surface of the cavity receiver has grooves embedded to create a duct spiraling about the exterior of the cavity receiver so that the duct forms tubes of a tube-style heat exchanger when covered by the heat exchanger shell. An interior diameter of the cavity receiver is greater than or equal to a diameter of an aperture of the cavity receiver, and a longitudinal interior depth of the cavity is greater than or equal to twice the interior diameter of the cavity receiver. The monolithic solar absorber is preferably composed of a ceramic material such as silicon carbide having emissivity greater than 0.9.
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