Prior to entering a furnace, air is heated from 25C to 150 C and the change in specific enthalpy for the whole heating process is 3640 J/mol. The flow rate of air at the outlet of the heater is 1.5m^3/min and the air pressure at this point is 150 kPa absolute. Calculate the heat needed for the process in kW. Assume the ideal gas behavior and that kinetic and potential energy changes from the heater inlet to the outlet are negligible.