Q 1) The ultimate analysis (by mass) of a bituminous coal is C, 80%, H, 4%; S, 2%; ash, 7%; and moisture, 7%. Determine 1- The LHV of this coal. 2. If the coal is burned with 40% excess air (140% theoretical air), the total mass of air required per kilogram of coal for the combustion. 3- The amount of coal (in tons) used daily in a 400 MW power plant with 39% efficiency 4- The volume of air supplied daily to the combustion chamber at standard conditions