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다단이차원(多段二次元) 집광식(集光式) 태양열(太陽熱) 집열기(集熱器) 개발(開發)에 관(關)한 연구(硏究) - I. 다단이차원(多段二次元) 집광식(集光式) 태양열(太陽熱) 집열기(集熱器)의 열적(熱的) 성능분석(性能分析)
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  • 다단이차원(多段二次元) 집광식(集光式) 태양열(太陽熱) 집열기(集熱器) 개발(開發)에 관(關)한 연구(硏究) - I. 다단이차원(多段二次元) 집광식(集光式) 태양열(太陽熱) 집열기(集熱器)의 열적(熱的) 성능분석(性能分析)
저자명
송현갑,Song. Hyun-Kap
간행물명
태양에너지
권/호정보
1986년|6권 2호|pp.3-14 (12 pages)
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한국태양에너지학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

It is desirable to collect the solar thermal energy at relatively high temperature in order to minimize the size of thermal storage system and to enlarge the scope of solar thermal energy utilization. In this study, to develop a solar collector that has both advantages of collecting solar thermal energy at high temperature and fixing conveniently the collector system for long term period, a cylindrical parabolique concentrating solar collector (M.C.P.C.S.C) was designed, which has several rows of parabolique reflectors and thin thickness such as the flat-plate solar collector, maintaining the optical form of concentrating solar collector. The thermal performance of the M.C.P.C.S.C. newly designed in this study was analysed theoretically and experimentally. The results are summarized as follows: 1) prediction equation for outlet temperature, $T_o$, of heat transfer fluid and for the thermal efficiency, ${eta}$, of the collector were derived as; o $$T_o=[C+B1_n(frac{I_c(t)}{pv^3})]T_i$$ o $${eta}=frac{A}{A_c}dot{m}[(C-1)+B1_n(E{cdot}di^6frac{I_c(t)}{dot{m}^3})]frac{T_i}{I_c(t)}$$ 2) When the insolation on the tilted solar collector surface, $I_c$, was $900-950W/m^2$ and the heat transfer fluid was not circulated in tubular absorber, the maximum temperature on the absorber surface was $100-118^{circ}C$, this result suggested that the heat transfer fluid could be heated up to $98-116^{circ}C$. The maximum temperature on the absorber surface was decreased with the increase of the collector shape factor, $L_p/L_w$ 3) There was a good agreement between the experimental and theoretical value of solar collector efficiency, ${eta}$, which was proportional to the collector shape factor, $L_p/L_w$ 4) It is desirable to continue the study on the relationship between the collector shape factor, $L_p/L_w$, and the thermal efficiency of solar collector.