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http://dx.doi.org/10.5322/JESI.2019.28.5.521

Evaluating Solar Light Collectors for Use in Closed Plant Production Systems  

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)
Publication Information
Journal of Environmental Science International / v.28, no.5, 2019 , pp. 521-526 More about this Journal
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
Fiber; Fresnel lens; Quantum; Spectrum; Wavelength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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