Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Evaluating Solar Light Collectors for Use in Closed Plant Production Systems

폐쇄형 식물생산 시스템에서 태양광 채광시스템 연구

  • Lee, Sanggyu (Division of SmartFarm Development, National Institute of Agricultural Science, RDA) ;
  • Lee, Jaesu (Division of SmartFarm Development, National Institute of Agricultural Science, RDA) ;
  • Lee, Hyundong (Division of SmartFarm Development, National Institute of Agricultural Science, RDA) ;
  • Baek, Jeonghyun (Division of SmartFarm Development, National Institute of Agricultural Science, RDA) ;
  • Rho, Siyoung (Division of SmartFarm Development, National Institute of Agricultural Science, RDA) ;
  • Hong, Youngsin (Division of SmartFarm Development, National Institute of Agricultural Science, RDA) ;
  • Park, Jongwon (Research Division for Horticulture, Chungnam Agricultural Research and Extension Services)
  • 이상규 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 이재수 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 이현동 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 백정현 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 노시영 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 홍영신 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 박종원 (충남농업기술원 원예연구과)
  • Received : 2019.03.21
  • Accepted : 2019.04.23
  • Published : 2019.05.31
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Abstract

In this study, a solar light collector that collects and transmits solar light required for crop production in a closed plant production system was developed. The solar light collector consisted of a Fresnel lens for collecting solar light, and a tracking actuator for tracking solar light from sunrise to sunset to increase the light collection efficiency. The optical fiber that transmitted solar light was made of Glass Optical Fiber (GOF), and it had an excellent optical transmission rate. After collecting the solar light, the amount of light was measured at 5, 10, 15, 20, 25, and 30 cm distances from the GOF through the darkroom by using a light sensor logger connected to a quantum and pyranometer sensor. Compared with solar light, the light intensity of pyranometer sensor measured at 5 cm was 114% higher than solar light, and 61% at 10 cm. In addition, it was observed that it is possible to transmit the necessary amount of light for growing crops up to about 15 cm (as over 22%) through GOF. Therefore, adding diffusers to the solar light collector should be expected to replace artificial light in plant factories or plug seedlings nurseries for leafy vegetables. More studies on the solar light collection devices and the light transmission devices that have high light collection efficiency should be conducted.

Keywords

References

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