The Performance and Efficiency Analysis of a PVT System Compared with a PV module and a Solar collector
PVT 시스템의 PV 모듈 및 태양열 집열기 대비 성능 및 효율 비교분석
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Euh, Seung-Hee
(Department of Biosystems engineering, Kangwon National University)
;
- Lee, Jeong-Bin (Department of Biosystems engineering, Kangwon National University) ;
- Choi, Yun-Sung (Department of Biosystems engineering, Kangwon National University) ;
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Kim, Dae-Hyun
(Department of Biosystems engineering, Kangwon National University)
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어승희
(강원대학교 농업생명과학대학 바이오시스템공학과)
;
- 이정빈 (강원대학교 농업생명과학대학 바이오시스템공학과) ;
- 최윤성 (강원대학교 농업생명과학대학 바이오시스템공학과) ;
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김대현
(강원대학교 농업생명과학대학 바이오시스템공학과)
- Published : 2011.11.24
Abstract
A photovoltaic/thermal(PVT)solar system is the solar technology that allows for simultaneous conversion of solar energy into both electricity and heat. This paper compared the performance of PVT system with a conventional PV module and solar collector and analyzed electrical and thermal efficiency of PVT system in terms of solar irradiance and inlet temperature of the working fluid. Based on the experimental data, thermal and electrical efficiencies of the glazed PVT system were 57.9% and 14.27% under zero reduced temperature condition which were lower by 13.6% than the solar thermal absorber plate and by 0.08% than the PV module respectively. For the unglazed PVT system, it had lower thermal efficiency than the solar thermal absorber plate but higher electrical performance than the PV module due to the cooling effect by the working fluid. However, total efficiency of the glazed PVT system was 72.2% which was higher than combined efficiencies of the solar collector and PV module. Besides, total efficiency of the PVT system would be much higher if calculated based on unit area.