Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Estimation on Heating and Cooling Loads for a Multi-Span Greenhouse and Performance Analysis of PV System using Building Energy Simulation

BES를 이용한 연동형 온실의 냉·난방 부하 산정 및 PV 시스템 발전 성능 분석

  • Lee, Minhyung (Department of Rural Systems Engineering, Seoul National University) ;
  • Lee, In-Bok (Department of Rural Systems Engineering, Seoul National University) ;
  • Ha, Tae-Hwan (Department of Rural Systems Engineering, Seoul National University) ;
  • Kim, Rack-Woo (Department of Rural Systems Engineering, Seoul National University) ;
  • Yeo, Uk-Hyeon (Department of Rural Systems Engineering, Seoul National University) ;
  • Lee, Sang-Yeon (Department of Rural Systems Engineering, Seoul National University) ;
  • Park, Gwanyong (Department of Rural Systems Engineering, Seoul National University) ;
  • Kim, Jun-Gyu (Department of Rural Systems Engineering, Seoul National University)
  • 이민형 (서울대학교 지역시스템공학전공) ;
  • 이인복 (서울대학교 지역시스템공학전공) ;
  • 하태환 (서울대학교 지역시스템공학전공) ;
  • 김락우 (서울대학교 지역시스템공학전공) ;
  • 여욱현 (서울대학교 지역시스템공학전공) ;
  • 이상연 (서울대학교 지역시스템공학전공) ;
  • 박관용 (서울대학교 지역시스템공학전공) ;
  • 김준규 (서울대학교 지역시스템공학전공)
  • Received : 2017.09.05
  • Accepted : 2017.10.11
  • Published : 2017.10.31
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Abstract

The price competitiveness of photovoltaic system (PV system) has risen recently due to the growth of industries, however, it is rarely applied to the greenhouse compared to other renewable energy. In order to evaluate the application of PV system in the greenhouse, power generation and optimal installation area of PV panels should be analyzed. For this purpose, the prediction of the heating and cooling loads of the greenhouse is necessary at first. Therefore, periodic and maximum energy loads of a multi-span greenhouse were estimated using Building Energy Simulation(BES) and optimal installation area of PV panels was derived in this study. 5 parameter equivalent circuit model was applied to analyzed power generation of PV system under different installation angle and the optimal installation condition of the PV system was derived. As a result of the energy simulation, the average cooling load and heating load of the greenhouse were 627,516MJ and 1,652,050MJ respectively when the ventilation rate was $60AE{\cdot}hr^{-1}$. The highest electric power production of the PV system was generated when the installation angle was set to $30^{\circ}$. Also, adjustable PV system produced about 6% more electric power than the fixed PV system. Optimal installation area of the PV panels was derived with consideration of the estimated energy loads. As a result, optimal installation area of PV panels for fixed PV system and adjustable PV system were $521m^2$ and $494m^2$ respectively.

Keywords

References

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