BES를 이용한 핫박스 모델 개발 및 검증 = Development and Validation of Hot Box Model by using Building Energy Simulation

다국어 초록 (Multilingual Abstract)

Building energy simulation (BES) model of hot box was developed by using TRNSYS, to investigate the overall heat transfer coefficient, U-vlaue(W · m^-1· k^-1) of different greenhouse covering materials based on specified weather conditions. The tests were carried out with extensively using greenhouse covering materials, polyethylene (PE), polycarbonate (PC), Polyvinyl chloride (PVC), and horticulture glass (HR). In addition we defined all test materials in TRNSYS on the bases of their optical and thermal properties. The model was calibrated by using different inside and outside convective heat transfer coefficient values suggested by different studies to find out the best relation with the experimental. The BES model of hot box shows very good agreement, when validated with experimentally obtained results. Furthermore, influence of different weather parameters, in which inside/outside temperature difference, wind speed, and long wave radiation losses are more drastic were investigated. It was found that U-value increases with increase in temperature difference. And for the given temperature difference U-value increase as wind velocity increases. The effect of night sky radiation were found higher for the low temperature difference and significant change occurs when temperature difference reaches 20 ℃.