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Analysis of Surplus Solar Energy in Greenhouse Based on Setting Temperature  

Yoon, Yong-Cheol (Dept. of Agricultural Eng., Gyeongsang National Univ.(Insti. of Agric. & Life Sci.))
Kown, Sun-Ju (Graduate school, Gyeongsang National Univ.)
Kim, Hyeon-Tae (Dept. of Bio-Industrial Machinery Eng., Gyeongsang National Univ.(Insti. of Agric. & Life Sci.))
kim, Young-Joo (Dept. of Agricultural Eng., Gyeongsang National Univ.(Insti. of Agric. & Life Sci.))
Suh, Won-Myung (Dept. of Agricultural Eng., Gyeongsang National Univ.(Insti. of Agric. & Life Sci.))
Publication Information
Journal of agriculture & life science / v.46, no.1, 2012 , pp. 195-206 More about this Journal
Abstract
This study is about an analysis of surplus solar energy by important greenhouse types as well as setting temperature different by using Typical Meteorological Year data which was secured in order to provide basic data for designing an optimum thermal storage system to accumulate surplus solar energy generating in greenhouses during the daytime. Depending on the setting temperatures of $15{\sim}19^{\circ}C$ for greenhouse heating during day and night, surplus heat amounts were varied at the rate of about $0.2{\sim}6.9%/4^{\circ}C$ with some variations according to the greenhouse types and regions. On the other hand, the variations of supplemental heat requirements were about $29.7{\sim}50.0%/4^{\circ}C$. Depending on the setting temperatures for greenhouse ventilations(low $25{\sim}29^{\circ}C$ and high $27{\sim}31^{\circ}C$), surplus heat amounts were varied at the rate of about $-9.9{\sim}-35.6%/4^{\circ}C$ in auto-type greenhouse. But in single-type greenhouses, they were about $-5.1{\sim}-13.4%/4^{\circ}C$. There were not significant changes in supplemental heat amounts depending on setting temperatures of ventilation for both greenhouse types and regions.
Keywords
Heating energy; Heat budget; Greenhouse types; KSU greenhouse model; Typical meteorological year; Ventilation;
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Times Cited By KSCI : 4  (Citation Analysis)
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