Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Characteristic Analysis on the Thermal Performance of the Dish Type Solar Concentrating System

Dish형 태양열 집광시스템 실증연구를 위한 집열성능 특성 분석

  • 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) ;
  • Yoon, Hwan-Ki (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) ;
  • 윤환기 (한국에너지기술연구원 고온태양열연구센터) ;
  • 유성연 (충남대학교 기계설계공학과)
  • Published : 2006.03.31
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Abstract

The dish type solar thermal concentrating system can collect the solar energy above $800^{\circ}C$. It has a concentration ratio of 800 and total reflector area of $49m^2$. To operate solar receivers at high temperature, the optimum aperture size is obtained from a comparison between maximizing absorbed energy and minimizing thermal losses. The system efficiency is defined as the absorbed energy by working fluid in receiver divided by the energy coming from the concentrator. We find that system efficiency is stable in case of flow rate of above 6lpm. The system efficiency are 64.9% and 65.7% in flow rate of 6lpm and 8lpm, respectively. The thermal performance showed that the maximum efficiency and the factor of thermal loss in flow rate of 8lpm are 68% and 0.0508.

Keywords

References

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