스마트팜 적용 피복재의 시험을 통한 성능평가 및 냉방부하 분석

Abstract

The thermal performance database of the covering material which can be used as input data for the smart farm cooling load simulation performance evaluation was analyzed through the test evaluation. Methods: The solar heat gain coefficient of the covering materials (PE, PMMA, PC double layer, woven film) was compared and analyzed through the Korean standard test method and input data was derived. Based on the thermal input data, the cooling load simulation of smart farm was conducted and the simulation performance evaluation of each case was performed to analyze how the indoor cooling load changes by covering materials. Results: The cooling load of the PC double layer was the lowest at 424 W/㎡, and the PE film was the highest at 559 W/㎡. The coefficient of heat transmission was 3.7 W/㎡ ·K~6.7 W/㎡ ·K for each covering materials, and the solar heat gain coefficient was evaluated as 54%~90% visible transmittance was 50%~88%. The cooling load of the PC double layer and PE film showed a difference of 135 W/m2(24%), indicating that the selection of the coating material greatly affects the cooling load. The cooling load was reduced by 25.3% when the cooling setpoint temperature was controlled, and the cooling load was reduced by 35.8% when the internal shading rate was applied by 60%.