Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Analysis on Insulation of Wind Environment and Greenhouse Cover Materials Insulation for Advanced Greenhouse Energy Design in Saemangeum Reclaimed Land

새만금 간척지 첨단온실 에너지 설계를 위한 풍환경 및 온실 피복재의 영향 분석

  • Hyo-Jae Seo (Department of Rural Construction Engineering, College of Agriculture & Life Sciences, Jeonbuk National University) ;
  • Il-Hwan Seo (Department of Rural Construction Engineering, College of Agriculture & Life Sciences, Jeonbuk National University) ;
  • Deuk-ha Noh (Engineering Team, Kiban Co.) ;
  • Haksung Lee (Reclaimed Land Agriculture Research Team, National institute of Crop Science, RDA)
  • 서효재 (전북대학교 농업생명과학대학 지역건설공학과) ;
  • 서일환 (전북대학교 농업생명과학대학 지역건설공학과) ;
  • 노득하 (노루기반 온실사업팀) ;
  • 이학성 (국립식량과학원 간척지농업연구팀)
  • Received : 2022.12.29
  • Accepted : 2023.01.25
  • Published : 2023.01.31
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Abstract

The external weather conditions including temperature and wind speed in the Saemangeum reclaimed land is different from that of the inland, affecting the internal environment of the greenhouse. Therefore, it is important to select an appropriate covering material considering the insulation effect according to the type and characteristics of the covering material considering the weather condition in the Saemangeum reclaimed land. A hexahedral insulation chamber was designed to evaluate the insulation efficiency of each glass-clad material in the outside weather condition in reclaimed land. In order to evaluate the insulation effect of each covering material, a radiator was installed and real-time power consumption was monitored. 16-mm PC (polycarbonate), 16-mm PMMA (polymethyl methacrylate), 4-mm greenhouse glass, and 16-mm double-layered glass were used as the covering materials of the chamber. In order to understand the effect of the external wind directions, the windward and downwind insulation properties were evaluated. As a result of comparing the thermal insulation effect of each greenhouse cover material to single-layer glass, the thermal insulation effect of double-layer glass was 16.9% higher, while PMMA and PC were 62.5% and 131.2% higher respectively. On average the wind speed on the windward side was 53.1% higher than that on the lee-wind side, and the temperature difference between the inside and outside of the chamber at the wind ward side was found to be 52.0% larger than that on the lee ward side. During the experiment period, the overall heating operation time for PC was 39.2% lower compared to other insulation materials. Showing highest energy efficiency, and compared to PC, single-layer glass power consumption was 37.4% higher.

본 연구에서는 새만금과 같은 간척지를 활용하여 대규모 첨단온실단지를 조성하는 경우 간척지의 환경적 특수성 중 높은 풍속에 따른 유리 단열재의 에너지 효율을 평가하였다. 현장에서 주로 사용되는 온실 단열재 중 4가지에 대한 평가 결과, 최대 37.4%의 에너지 차이를 보여, 온실 피복재의 선정이 중요함을 제시하였다. 이를 바탕으로 일반적인 내륙에서의 온실을 설계하는 것과 달리, 간척지에서는 내재해성 온실규격을 따라 시설을 설계하여야 하며, 에너지 소비량은 높아진 풍속과 재질을 고려하여 산정되어야 한다. 본 연구의 결과는 에너지 효율성을 온실 피복재의 종류와 풍속에 따라서 제시하고 있으며, 이는 대규모 첨단온실 조성 시 에너지 소비량을 예측하고, 이를 바탕으로 신재생에너지원을 포함하는 에너지 설계에 활용될 수 있다

Keywords

Acknowledgement

본 연구는 농촌진흥청 논이용밭농업 안정생산기술개발사업(PJ015586)의 연구지원을 받아 수행하였습니다.

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