A coal-fired boiler produces superheated steam steadily at 1 MPa, 500°C from the feed water which enters the boiler at 1 MPa, 50°C. For a flow rate of 10 kg/s, determine.
(a) The rate of heat transfer from the boiler to the water.
(b) If the energetic efficiency of the boiler is 80% and the heating value of coal is 32.8 MJ/kg, determine the rate of fuel consumption in tons/hr.