Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Characteristics of Heat Transmission Variation by Air Space Thickness and Injected Air Temperature in Air-Inflated Double Layers Film

공기막 이중필름의 공기막 두께와 주입공기 온도에 따른 관류전열량 변화 특성

  • 김형권 (국립원예특작과학원 시설원예시험장) ;
  • 전종길 (국립원예특작과학원 시설원예시험장) ;
  • 백이 (국립원예특작과학원 시설원예시험장) ;
  • 이상호 (국립원예특작과학원 시설원예시험장) ;
  • 윤남규 (국립농업과학원 재해예방공학과) ;
  • 유주열 (화신농건)
  • Received : 2013.09.17
  • Accepted : 2013.11.04
  • Published : 2013.11.30
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Abstract

This study was carried out to provide a valuable reference which could reduce heating loss of air-inflated double PO film. Therefore, this study was aimed to choose the best air space thickness and injected air temperature. The characteristics of heat transmission variation at experimental materials were measured and analysed in the laboratory. The experiment was conducted of two layers of PO film, each 0.15 mm tick, sandwiching 110, 175, 225 mm of inflated air with 1 m sides. Environmental control lab was constantly controlled with $-10^{\circ}C$ and experiment chamber was constantly changed with 0, 5, 10, $15^{\circ}C$. The analysis of heat transfer showed that heat transmission does not have a direct correlation with Air Space thickness and injected air temperature. But when inside and outside temperature difference of chamber was great, supply of outside air to Air Space had an advantage at reduction of heating load. It was required to examine accurate analysis at a real greenhouse.

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References

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