In this work, the calculation of specific energy consumption for the process of the barley brewer’s spent grain filtration drying was investigated. It has been determined that the lowest total energy consumption for the evaporation of 1 kg of moisture during the filtration drying of barley brewer’s spent grain from the initial moisture content of the material ω1 = 77.88 % (wt.) to the final value ω2 = 10 % (wt.) is 14898.087 kJ/kg H2O or 4.138 kW/kg H2O for the following process parameters: the height of the layer of dried material H = 120 mm, the thermal agent temperature T = 90 °C, the thermal agent velocity v0 = 1.81 m/sec. Determining the optimal process parameters at which the lowest energy costs for drying the material are possible is important for the design of drying equipment.
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