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Analysis of Heat Transfer Characteristics on Multi-layer Insulating Curtains Coated with Silica Aerogel

실리카 에어로겔이 흡착된 다겹보온커튼의 전열 특성 분석

  • Jin, Byung-Ok (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA) ;
  • Kim, Hyung-Kweon (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA) ;
  • Ryou, Young-Sun (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA) ;
  • Lee, Tae-Seok (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA) ;
  • Kim, Young-Hwa (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA) ;
  • Oh, Sung-Sik (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA) ;
  • Kang, Geum-Choon (Dept. of Agricultural Engineering, National Institute of Agricultural Science, RDA)
  • 진병옥 (국립농업과학원 농업공학부) ;
  • 김형권 (국립농업과학원 농업공학부) ;
  • 유영선 (국립농업과학원 농업공학부) ;
  • 이태석 (국립농업과학원 농업공학부) ;
  • 김영화 (국립농업과학원 농업공학부) ;
  • 오성식 (국립농업과학원 농업공학부) ;
  • 강금춘 (국립농업과학원 농업공학부)
  • Received : 2019.06.10
  • Accepted : 2019.07.12
  • Published : 2019.07.30

Abstract

The multi-layer insulating curtains used in the experiment was produced in six combinations using non-woven fabric containing aerogel and compared and analyzed by measuring heat flux and heat perfusion rates due to weight, thickness and temperature changes. Using silica aerogel, which have recently been noted as new material insulation, this study tries to produce a new combination of multi-layer insulating curtains that can complement the shortcomings of the multi-layer insulating curtains currently in use and maintain and improve its warmth, and analyze the thermal properties. The heat flux means the amount of heat passing per unit time per unit area, and the higher the value, the more heat passing through the multi-layer insulating curtain, and it can be judged that the heat retention is low. The weight and thickness of multi-layer insulation curtains were found to be highly correlated with thermal insulation. In particular, insulation curtains combined with aerogel meltblown non-woven fabric had relatively higher thermal insulation than insulation curtains with the same number of insulation materials. However, the aerogel meltblown non-woven fabric is weak in light resistance and durability, and there is a problem that the production process and aerogel are scattering. In order to solve this problems, the combination of expanded aerogel non-woven fabric and hollow fiber non-woven fabric, which are relatively simple manufacturing processes and excellent warmth, are suitable for use in real farms.

Acknowledgement

Supported by : 농촌진흥청

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