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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study of Collector Slope Angles for Acquiring Maximum Solar Radiation for Various Periods

최대 일사량 확보를 위한 기간별 집열 경사각 연구

  • Cho, Yeong-Uk (Graduate School of Housing, Seoul National University of Science and Technology) ;
  • Kim, Young-Il (School of Architecture, Seoul National University of Science and Technology) ;
  • Chung, Kwang-Seop (School of Architecture, Seoul National University of Science and Technology)
  • 조영욱 (서울과학기술대학교 주택대학원) ;
  • 김영일 (서울과학기술대학교 건축학부) ;
  • 정광섭 (서울과학기술대학교 건축학부)
  • Received : 2011.05.06
  • Accepted : 2011.06.08
  • Published : 2011.07.10
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Abstract

The objective of this research is to study the variation of optimum slope angles of collectors for seven regions in Korea, which are Seoul, Gangneung, Daejeon, Daegu, Gwangju, Busan and Jeju. The results for 2000~2007 are analyzed to sec if adjustment of slope angles is necessary each year to receive maximum solar radiation. For an azimuth fixed solar collector, solar radiation of yearly optimized slope angle during May~Sept.(summer), Nov.~Mar.(winter) and the whole year are greater than the fixed slope angle by 0.03%, 0.02%, and 0.04%, respectively. For an azimuth tracking solar collector, solar radiation of yearly optimized slope angle during May~Sept.(slimmer), Nov.-Mar.(winter) and the whole year are greater than the fixed slope angle by 0.03%, 0.07%, and 0.04% respectively. It is unnecessary to adjust slope angles each year for both azimuth fixed and tracking collectors, since the gains are insignificant. Solar radiation of the azimuth tracking solar collector during May~Sept., Nov.~Mar. and the whole year are greater by 14.7%, 16.0%, and 19.2% than the azimuth fixed solar collector.

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References

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