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Electronic Resource
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SAND Report: SAND84-8251, December 1984.
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ABSTRACT:
In tests designed to simulate the fundamental characteristics of a solar thermal solid particle central receiver, a continuous stream of free-falling particles has been heated to temperatures in excess of 1300 K over a ten meter fall height in the presence of a radiant flux of 0.50 MW 1m2
In tests designed to simulate the fundamental characteristics of a solar thermal solid particle central receiver, a continuous stream of free-falling particles has been heated to temperatures in excess of 1300 K over a ten meter fall height in the presence of a radiant flux of 0.50 MW 1m2
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. The ability to heat particles to temperatures this high is a major step in demonstrating the technical feasibility of the solid particle receiver concept. Particle temperatures were varied by altering mass flow rate, incident radiant flux, and particle size and optical properties. Flux levels were varied between 0.10 and 0.50 MW 1m2 for silicon carbide and silica sand particles with nominal sizes of 300 jtm, 500 Jlm and 1000 jtm. Particle generated convection currents increased particle residence times by as much as a factor of three. No particle sintering effects were observed. Show Less