Development and Testing of Advanced Central Receivers

by J.M. Chavez,

Technical Report, 1991


CSP Unique ID 3043


Electronic Resource




Library's review

Advanced central receiver concepts are currently being investigated as part of the U.S. Department of Energy solar thermal research program. In the last 12 years many studies and test programs have been earned out to develop and demonstrate the viability of central receiver power plants
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using tube-receivers with molten-nitrate-salt and steam. However, studies of advanced receiver concepts, such as the molten nitrate salt direct absorption receivers and volumetric air receivers, have shown their potential to be simpler and cheaper than conventional tube-receivers. In a direct absorption receiver, the heat-absorbing fluid (a blackened molten nitrate salt) flows in a thin, wavy film down a flat, vertical panel (rather than through tubes) and absorbs the concentrated solar flux directly. The volumetric air receiver design uses a porous absorber, on which the solar energy is concentrated. Air flows through the absorber, convectively transferring energy from the absorber to the air. In this paper, the concepts, advantages, status, and test results of both the direct absorption receiver and the volumetric receiver are discussed.
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