원형관-평판휜 형상의 밀집형 열교환기를 이용한 온실의 냉각 해석 모델 개발 및 검증 = Cooling Analysis Model Development and Verification using a Heat Exchanger with Circular Tubes and Continuous Plate Fins in a Greenhouse

다국어 초록 (Multilingual Abstract)

In summer, cooling is needed because excessive temperature inside greenhouse increase causing a negative influence on the growth of crops in Korea. In this study, mathematical model predicting the temperature change in the greenhouse was developed through numerical analysis concerning solar radiation and heat exchange between inflow air and heat exchanger and then verification of the simulation was performed with the experimental data. For the cooling experiment, a pilot scale greenhouse was built, a duct and a cooling fin and a fan were installed for inflow of the air for reducing temperature. Numerical analysis for predicting temperature change in the greenhouse was done by simulation using Matlab (R2016a, The Mathworks INC, USA). When the experimental results was compared with the numerical simulation values, R-squared and RMSE (root mean square error) were showed 0.9502, 0.7081, respectively. It was showed that predicting temperature change inside the greenhouse was good agreement with the experimental result.