Prediction of Bin-Wall Temperature Declines
Amodel was developed to predict the surface tempera-ture of a filled, thin-walled, metal grain bin on clear days. The model predicted maximum and mean wall temperatures of a 4.2 m x 13.2 m steel bin wall to within 2 to 5°C of observed for a wide range of diurnally varying ambient conditions. The model also predicted maximum rates of decline of mean bin wall temperature to within 4 to 8°C/h of observed on calm days and to within l°C/h of observed on windy days. Maximum rates of hourly bin wall temperature decline occurred on calm days. The model predicted maximum mean bin wall temperature declines due to changes in solar radiation intensity between 10°C/h and 24°C/h for the range of climatic conditions in the U.S.