Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A study on the efficient use of solar energy -Analysis of the solar radiation distribution by tilts and azimuths -

태양에너지의 효율적 이용에 관한 연구 - 방위각 및 경사각별 일사량 분포도 분석 -

  • Choi, Young Su (Graduate School of Science and Technology, Precision Mechanical Engineering, Kyungpook National University) ;
  • Lee, Seung Hwan (Graduate School, Precision Mechanical Engineering, Kyungpook National University) ;
  • Kim, Jin Hyun (Precision Mechanical Engineering, Kyungpook National University) ;
  • Choe, Jung Seob (Precision Mechanical Engineering, Kyungpook National University) ;
  • Kim, Tae Wook (Precision Mechanical Engineering, Kyungpook National University)
  • 최영수 (경북대학교 과학기술대학원) ;
  • 이승환 (경북대학교 대학원 정밀기계공학과) ;
  • 김진현 (경북대학교 정밀기계공학과) ;
  • 최중섭 (경북대학교 정밀기계공학과) ;
  • 김태욱 (경북대학교 정밀기계공학과)
  • Received : 2015.06.08
  • Accepted : 2015.08.06
  • Published : 2015.08.30
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Abstract

This research is carried out to provide fundamental data for the design of solar photovoltaic systems. Methodologically, the solar radiation installations from 10 different pyreheliometers are measured, which are set up at 6 and 4 different levels of tilts and azimuth, respectively. Maximum of a yearly accumulated solar radiation is $1,569.8kWh/m^2{\cdot}year$ with a tilt angle of $30^{\circ}$ and an azimuth angle of $0^{\circ}$(south), $1,558.5kWh/m^2{\cdot}year$ with an azimuth angle of $0^{\circ}$(south) in combination of a tilt angle of $35^{\circ}$. This paper estimates that in designing fixed solar photovoltaic systems with a tilt angle of $12.5^{\circ}{\sim}50^{\circ}$(south) and a tilt angle of $35^{\circ}$ in combination of an azimuth angle of $S45^{\circ}W{\sim}S45^{\circ}E$, a tilt angle and an azimuth angle will cause a maximum 6.8% and 9.9% of efficiency variation respectively, depending on a installed solar module's angle and direction.

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References

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