Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Field Survey and Analysis of Natural Ventilation Characteristics of Multi-span Greenhouse with Different Roof Vent

연동형 비닐하우스의 환기창 형태 조사 및 자연환기 효과 분석

  • Park, Min jung (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Choi, Duck kyu (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Son, Jin kwan (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Yoon, Sung-Wook (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Kim, Hee tae (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Lee, Seung-Kee (Department of Agricultural Engineering, Kongju National University) ;
  • Kang, Dong hyeon (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
  • 박민정 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 최덕규 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 손진관 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 윤성욱 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 김희태 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 이승기 (공주대학교 생물산업공학부) ;
  • 강동현 (농촌진흥청 국립농업과학원 농업공학부)
  • Received : 2019.11.06
  • Accepted : 2020.01.15
  • Published : 2020.01.31
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Abstract

The objectives of this study were to investigate the standard and roof vent type of multi-span greenhouse and to analyze the characteristics of natural ventilation of multi-span greenhouse with different roof vent using computational fluid dynamics (CFD) code. The vent area proportion of surveyed farms averaged 10%, it was analyzed that the vent design for natural ventilation is insufficient. The results of natural ventilation efficiency of multi-span greenhouse according to roof vent type showed that the temperature of the position in which the crops grew was the lowest in the conical roof vent type and the highest in the half conical roof vent type. For the natural ventilation effect, the conical roof vent type was the best one, but the structural stability should be evaluated in light of wind load.

본 연구에서는 국내에 가장 많이 보급되어 있는 1-2W 모델 연동온실에 대한 온실 규격 및 환기창 형태 실태 조사를 수행하고, 이를 바탕으로 연동온실의 천창 형태에 따른 유동 특성을 분석하기 위해 수치해석을 수행하여 자연환기효과를 분석하고자 하였다. 온실 실태조사 대상농가의 환기창면적 비율은 평균10%로 자연환기를 위한 시설면적 대비 환기창 면적 설계가 부족한 것으로 나타나 환기창 개선이 필요할 것으로 판단된다. 연동 온실의 천창 형태별 자연환기를 해석 및 분석한 결과, 온실 내 작물위치의 온도 분포 및 내외부 온도차는 몽골식 천창 온실에서 가장 낮고 외몽골식 천창 온실에서 가장 높게 나타났으나 추후 풍하중에 의한 구조적인 안전성을 평가해야할 것으로 판단된다.

Keywords

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