Psychrometry and Grain Drying

A continuous grain dryer evaporates water at rate $\dot{m}_w = 180\text{ kg/h}$ ($0.05\text{ kg/s}$). Latent heat of vaporization of water is $h_{fg} = 2400\text{ kJ/kg}$. Heat requirement for moisture evaporation $\dot{Q} = 0.05 \times 2400$ in kW is: