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http://dx.doi.org/10.12791/KSBEC.2020.29.3.265

Development of Fog Cooling Control System and Cooling Effect in Greenhouse  

Park, Seok Ho (Protected Horticulture Research Institute, NIHHS, RDA)
Moon, Jong Pil (Protected Horticulture Research Institute, NIHHS, RDA)
Kim, Jin Koo (Protected Horticulture Research Institute, NIHHS, RDA)
Kim, Seoung Hee (Department of Energy and Environment, NIAS, RDA)
Publication Information
Journal of Bio-Environment Control / v.29, no.3, 2020 , pp. 265-276 More about this Journal
Abstract
This study was conducted to provide a basis for raising farm income by increasing the yield and extending the cultivation period by creating an environment where crops can be cultivated normally during high temperatures in summer. The maximum cooling load of the multi-span greenhouse with a floor area of 504 ㎡ was found to be 462,609 W, and keeping the greenhouse under 32℃ without shading the greenhouse at a high temperature, it was necessary to fog spray 471.6 L of water per hour. The automatic fog cooling control device was developed to effectively control the fog device, the flow fan, and the light blocking device constituting the fog cooling system. The fog cooling system showed that the temperature of the greenhouse could be lowered by 6℃ than the outside temperature. The relative humidity of the fog-cooled greenhouse was 40-80% during the day, about 20% higher than that of the control greenhouse, and this increase in relative humidity contributed to the growth of cucumbers. The relative humidity of the fog cooling greenhouse during the day was 40-80%, which was about 20% higher than that of the control greenhouse, and this increase in relative humidity contributed to the growth of cucumbers. The yield of cucumbers in the fog-cooled greenhouse was 1.8 times higher in the single-span greenhouse and two times higher in the multi-span greenhouse compared to the control greenhouse.
Keywords
evaporation cooling; fog control system; fog cooling; greenhouse cooling;
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