Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Comparison Study of PVT Water and PVT Air Modules for Heat and Power Co-Generation

태양 열 전기 복합생산 PVT Water and PVT Air 모듈의 실험적 성능비교 연구

  • Lee, Kwang-Seob (Department of Renewable Energy Engineering, University of Science and Technology) ;
  • Putrayudha S., Andrew (Department of Renewable Energy Engineering, University of Science and Technology) ;
  • Kang, Eun-Chul (Energy Efficiency Research Division, Korea Institute of Energy Research) ;
  • Lee, Euy-Joon (Energy Efficiency Research Division, Korea Institute of Energy Research)
  • 이광섭 (과학기술연합대학원대학교 재생에너지공학과) ;
  • 앤드류 (과학기술연합대학원대학교 재생에너지공학과) ;
  • 강은철 (한국에너지기술연구원 에너지효율연구본부) ;
  • 이의준 (한국에너지기술연구원 에너지효율연구본부)
  • Received : 2014.07.04
  • Accepted : 2014.09.25
  • Published : 2014.12.10
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Abstract

The development of photovoltaic-thermal (PVT) technology has been introduced in recent years specifically to increase PV efficiency. One of the characteristics of PV systems is that the electricity generation increases as the solar radiation increases whereas the efficiency decreases because of high surface temperatures. Using a photovoltaic-thermal system, the surface temperature can be decreased by capturing the excess heat and the efficiency can be increased due to these characteristics. In this paper, three cases are introduced : 1) PV_r as the reference case, 2) PVT_a, which uses air as a heat source, and 3) PVT_w, which uses water as a heat source. Experiments were performed, analyzed, and compared to examine the effect of the PVT type on the efficiency of the system. The results showed that ETC($%/^{\circ}C$) efficiency of the PVT cases was increased versus the reference case due to decreasing surface temperature. Total efficiencies, which are electrical efficiency and thermal efficiency, for each PVT are tested and found to be 12.22% for PV_r, 29.50% for PVT_a, and 68.74% for PVT_w.

Keywords

References

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