Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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An Experimental Study on the Characteristics of Flux Density Distributions in the Focal Region of a Solar Concentrator

태양열 집광기의 초점 지역에 형성된 플럭스 밀도 분포의 특성

  • Hyun, S.T. (Advanced Solar Thermal Research Team, Korea Institute of Energy Research More-In Energy Inc.) ;
  • Kang, Y.H. (Advanced Solar Thermal Research Team, Korea Institute of Energy Research More-In Energy Inc.) ;
  • Yoon, H.G. (Advanced Solar Thermal Research Team, Korea Institute of Energy Research More-In Energy Inc.) ;
  • Yoo, C.K. (Advanced Solar Thermal Research Team, Korea Institute of Energy Research More-In Energy Inc.) ;
  • Kang, M.C. (Advanced Solar Thermal Research Team, Korea Institute of Energy Research More-In Energy Inc.)
  • 현성택 (한국에너지기술연구원 고온태양열연구팀) ;
  • 강용혁 (한국에너지기술연구원 고온태양열연구팀) ;
  • 윤환기 (한국에너지기술연구원 고온태양열연구팀) ;
  • 유창균 (한국에너지기술연구원 고온태양열연구팀) ;
  • 강명철 (한국에너지기술연구원 고온태양열연구팀)
  • Published : 2002.09.30
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Abstract

This experimental study represents the results of an analysis on the characteristics of flux density distributions in the focal region of solar concentrator. The characteristics of flux density distributions are investigated to optimally design and position a cavity receiver. This deemed very useful to find and correct various errors associated with a dish concentrator. We estimated the flux density distribution on the target placed along with focal lengths from the dish vertex to experimentally determine the focal length. It is observed that the actual focal point exists when the focal length is 2.17 m. We also evaluated the position of flux centroid, and it was found that there were errors within 2 cm from the target center. The total integrated power of 2467 W was measured under focal flux distributions, which corresponds to the intercept rate of 85.8%. As a result of the percent power within radius, approximately 90% of the incident radiation is intercepted by about 0.06 m radius.

Keywords

References

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