Heat production kinetics and the scope for thermal self-ignition in wheat drying

Heat production has been examined at various oxygen partial pressures in the oxidation and thermal destruction of grain products by the use of a DAK-1-2 differential microcalorimeter. Estimates have been made on the adiabatic induction periods and critical sizes of the grain product layers on a metal surface (boundary conditions of the first kind) in the absence of heat transfer from the other surface. It is found that thermal self-ignition will occur in degenerate mode when thermal destruction is decisive.