Repeat Problem, but determine the flow rates required for (a) propane (C3H8), (b) octane (C8H18), and (c) coal (modeled as solid carbon) if they are used as the fuels.
Problem
A Rankine cycle power plant has a thermal efficiency of 40% and produces 750 MW of power. The heat is to be supplied to the water in the steam generator through the combustion of methane (CH4) with 10% excess air. The methane and air both enter the steam generator at 298 K and burn to completion, and the products exit the steam generator at 650 K. The combustion process takes place at 101 kPa. Determine the required mass flow rate of the methane, and the corresponding volumetric flow rate of the fuel and the volumetric flow rate of the air entering the steam generator.
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