Modelling of Energy Demand in an MDF Plant
A computer model was developed to quantify the energy demand in a medium density fibreboard (MDF) plant based on the commercial production process from chip preparation, refining, fibre drying, mat forming, hot pressing to product finishing. Thermal energy was theoretically modelling in each unit operation while electricity demand was correlated empirically based on a MDF plant energy audit. With the inputs of MDF production, grade, initial moisture content, and fibre drying method, the model is able to predict the energy demand for both heat and electricity. The model prediction also includes processing parameters such log consumption, resin requirement, and wood residues generated for given production. This facilitates evaluation of the thermal energy self-sufficiency relative to the different. Validation of the model using plant data shows that the model is able to predict the energy demand in satisfied accuracy with discrepancy of -5% to 7% for thermal energy and ±4% for electricity.