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강명철(Kang, Myeongcheol),강용혁(Kang, Yongheack),윤환기(Yoon, Hwanki),유창균(Yu, Changkyun) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
This experimental study represents the results of an analysis on the characteristics of flux density distribution in the focal region of solar concentrator. The characteristics of flux density distributions are investigated to optimally design and position a cavity receiver. This was 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 2.17m. The total integrated power and percent power was 2467W and 85.8%, respectively, in the case of small dish, and also 2095W and 79%, respectively, in the case of KIERDISH II. As a result of the percent power within radius, approximately 90% of the incident radiation is intercepted by about 0.06 m radius. The minimum radius of receiver in KIERDISH II is found to be 0.15m and approximately 90% of the incident radiation is intercepted by receiver aperture.