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2017 Vol.26, Issue 4 Preview Page
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

Minhyung Lee1
,
In-Bok Lee1*
,
Tae-Hwan Ha1
,
Rack-Woo Kim1
,
Uk-Hyeon Yeo1
,
Sang-Yeon Lee1
,
Gwanyong Park1
,
Jun-Gyu Kim1
이 민형1
,
이 인복1*
,
하 태환1
,
김 락우1
,
여 욱현1
,
이 상연1
,
박 관용1
,
김 준규1
1Department of Rural Systems Engineering, Seoul National University, Seoul 08826, Korea
1서울대학교 지역시스템공학전공
*Corresponding author: iblee@snu.ac.kr
30 November 2017. pp. 258-267
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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·hr-1. The highest electric power production of the PV system was generated when the installation angle was set to 30°. 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 521m2 and 494m2 respectively.

Keywords
building energy simulation
energy loads
greenhouse
photovoltaic system

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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 26
  • No :4
  • Pages :258-267
  • Received Date : 2017-09-05
  • Revised Date : 2017-10-11
  • Accepted Date : 2017-10-11
  • DOI :https://doi.org/10.12791/KSBEC.2017.26.4.258
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