The gravimetric analysis of a solid fuel is 84%C, 10% H₂4%O₂ and the remainder ash.The C.V. of carbon is 33,800 kJ/kg and the H.C.V. of hydrogen is 114, 700 kJ/kg.

Determine

(a) the gross calorific value of the fuel;

(b) the amount of carbon burnt to CO if the actual alr supply is 10 kg/kg of fuely and

(c) the gross calorific value of the fuel as burnt for case (b) to CO₂ and CO, if C burnt to CO releases 10, 300 kJ/kg.