Modelling Self-Heating and Self-Ignition Processes during Biomass Storage

A mathematical model was developed to predict the self-heating and self-ignition processes of relatively dry biomass during storage, considering in detail effects moisture exchange behaviour, low-temperature oxidation reaction associated heat mass transfer. Basket heating tests on fir pellets powder at temperatures 180–200 °C were conducted observe process determine kinetics chemical for validation. As a result, it demonstrated that could reasonably represent spontaneous combustion storage. Furthermore, numerical study sensitivity analysis revealed describing transfer with reliable estimations kinetic thermophysical parameters material is necessary predicting self-ignition, effect water behaviour essential even biomass, such as pellets, content up 15–20%.