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http://dx.doi.org/10.12791/KSBEC.2014.23.4.303

Analysis of Light Environments in Reclaimed Land and Estimation of Spatial Light Distributions in Greenhouse by 3-D Model  

Lee, June Woo (Department of Plant Science and Research Institute of Agriculture and Life Science, Seoul National University)
Shin, Jong Hwa (Department of Plant Science and Research Institute of Agriculture and Life Science, Seoul National University)
Kim, Jee Hoon (Department of Plant Science and Research Institute of Agriculture and Life Science, Seoul National University)
Park, Hyun Woo (Department of Plant Science and Research Institute of Agriculture and Life Science, Seoul National University)
Yu, In Ho (Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science)
Son, Jung Eek (Department of Plant Science and Research Institute of Agriculture and Life Science, Seoul National University)
Publication Information
Journal of Bio-Environment Control / v.23, no.4, 2014 , pp. 303-308 More about this Journal
Abstract
Reclaimed lands, expected as high-tech export horticultural complex, have unusual light environments due to sea fog. For adequate greenhouse design at reclaimed land, spatial light distributions in greenhouse should be required considering diffusive and direct lights. The objectives of this study were to analyze light environments and estimate spatial light distributions in greenhouse at reclaimed land by 3D greenhouse models. Total and diffusive lights were compared between reclaimed land and inland. For verification of the 3D greenhouse models, spatial light distributions and measured light intensities in greenhouse were compared with the estimated ones. Light environments at reclaimed land showed a higher diffusive irradiation than at inland, especially near sunrise and sunset. The estimated spatial light distributions in greenhouse showed good agreements with the measured ones. By using this method, we could estimate the average light intensity with time and spatial light distributions in greenhouse at specific outside light conditions. This result will be useful for analysis of light environments but also estimation of crop light inception in greenhouse at reclaimed land.
Keywords
diffusive light; greenhouse structure; model verification; sea fog; simulation;
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