Journal
SOLAR ENERGY
Volume 90, Issue -, Pages 195-204Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2013.01.017
Keywords
Cavity receiver; Optical efficiency; Heat flux distribution; Irradiative heat transfer; Monte Carlo
Categories
Funding
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51121004]
- National Natural Science Foundation of China [50930007]
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The bottom surface of conventional cavity receiver cannot be fully covered by coiled metal tube during fabrication, which would induce a dead space of solar energy absorption. The dead space of solar energy absorption can severely decrease the optical efficiency of cavity receiver. Two new types of cavity receiver with bottom surface convex are put forward with the objective to solve the problem of dead space of solar energy absorption and improve the optical efficiency of cavity receiver. The optical efficiency and heat flux distribution of the two new types of cavity receiver are analyzed by Monte Carlo ray tracing method. Besides, the optical efficiency comparisons between conventional cavity receiver and the two new types of cavity receiver are conducted at different characteristic parameter conditions. (C) 2013 Elsevier Ltd. All rights reserved.
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