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http://dx.doi.org/10.5762/KAIS.2012.13.4.1419

A Study on the Heating and Cooling Energy Load Analysis of the KNU Plant Factory  

Lee, Chan-Kyu (Department of Mechanical Engineering, Kongju National University)
Kim, Woo-Tae (Department of Mechanical and Automotive Engineering, Kongju National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.13, no.4, 2012 , pp. 1419-1426 More about this Journal
Abstract
The heating and cooling energy load of the KNU plant factory was analyzed using the DesignBuilder. Indoor temperature set-point, LED supplemental lighting schedule, LED heat gain, and type of double skin window were selected as simulation parameters. For the cases without LED supplemental lighting, the proper growth temperature of lettuce $20^{\circ}C$ was selected as indoor temperature set-point together with $15^{\circ}C$ and $25^{\circ}C$. The annual heating and cooling loads which are required to maintain a constant indoor temperature were calculated for all the given temperatures. The cooling load was highest for $15^{\circ}C$ and heating load was highest for $25^{\circ}C$. For the cases with LED supplemental lighting, the heating load was decreased and the cooling load was 6 times higher than the case without LED. In addition, night time lighting schedule gave better result as compared to day time lighting schedule. To investigate the effect of window type on annual energy load, 5 different double skin window types were selected. As the U-value of double skin window decreases, the heating load decreases and the cooling load increases. To optimize the total energy consumption in the plant factory, it is required to set a proper indoor temperature for the selected plantation crop, to select a suitable window type depending on LED heat gain, and to apply passive and active energy saving technology.
Keywords
KNU plant factory; Energy load analysis; DesignBuilder; Heat transfer;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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