Amathematicalmodelbasedonthetheoryofheatandmasstransferinporousmediawasdevelopedtosimulatetheevolutionofgraintemperatureandmoisturecontentinawheatstoragebinduringventilationwithcoolingairattheconstanttemperatureandhumidity.Unlikethepreviousworksonthisaspect,thepresentworkwasnotfocusedoncoolingthestoredgrainbyventilationwithambientair,butwiththerefrigeratedair.Validationwasperformedbycomparingbetweenpredictedandmeasuredgraintemperatureandgrainmoisturecontentfortwocases.Predicteddatawereinreasonablegoodagreementwithmeasuredones.Themodelandtheparametervaluesusedinthemodelareapplicableforpredictingtemperatureandmoistureofstoredgrainsunderventilationconditions.