Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Flux Density Distribution of the Dish Solar Concentrator (KIERDISH II)

KIERDISH II 태양열 집광시스템의 플럭스밀도 분포

  • Kang, Myeong-Cheol (Advanced Solar Thermal Research Center, Korea Institute of Energy Research) ;
  • Kang, Yong-Heack (Advanced Solar Thermal Research Center, Korea Institute of Energy Research) ;
  • Yoo, Seong-Yeon (Department of Mechanical Design Engineering, Chungnam National University)
  • 강명철 (한국에너지기술연구원 고온태양열연구센터) ;
  • 강용혁 (한국에너지기술연구원 고온태양열연구센터) ;
  • 유성연 (충남대학교 기계설계공학과)
  • Published : 2004.12.30
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Abstract

A solar concentrator, named KIERDISH II, was built at KIER in order to investigate the feasibility of high temperature solar energy application system. The constructed concentrator is a dish type solar concentrator with a focal length of 4.68m and a diameter of 7.9m. To successfully operate KIERDISH II, optimal design of the absorber is very important and flux density distribution has to be known. The focal flux density distribution on the receiver was measured. We have observed the shape and size of flux images and evaluated percent power within radius. Flux density distribution is usually measured by a CCD(charge coupled device) camera and a radiometer. In this paper we present a flux mapping method to estimate the characteristic features of the flux density distribution in the focal region of solar concentrator. The minimum radius of receiver is found to be 0.15m and approximately 90% of the incident radiation is intercepted by receiver aperture.

Keywords

References

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