Modelling and Simulation of Heat Transfer in Stored Rough Rice with Aeration

A mathematical model based on dynamic heat and mass balances was developed to simulate grain and air temperature in a bin storage during rough rice forced aeration periods. The mathematical model includes several experimentally obtained expressions to determine thermo-physical grain properties. Model validation was carried out by comparing predicted with experimentally measured grain temperatures in different points of a pilot silo, ventilated with cool air at constant air temperature and humidity. Predicted and measured data were in close agreement. The model can be used to predict the development of grain temperature and the time needed to cool stored grain under different ventilation conditions.