1. Methane (CH4) at 258C, enters the combustor of a simple open gas turbine power plant and burns completely with 400% of theoretical air entering the compressor at 258C, 1 atm. Products of combustion exit the turbine at 5778C, 1 atm. The rate of heat transfer from the gas turbine is estimated as 10% of the net power developed. Determine the net power output, in MW, if the fuel mass flow rate is 1200 kg/h. Kinetic and potential energy effects are negligible.
2. Octane gas C8H18 at 258C enters a jet engine and burns completely with 300% of theoretical air entering at 258C, 1 atm with a volumetric flow rate of 42 m3/s. Products of combustion exit at 990 K, 1 atm. If the fuel and air enter with negligible velocities, determine the thrust produced by the engine in kN.