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Chemistry, 16.10.2019 20:00, makyah3683
Consider a combined gas–steam power plant that has a net power output of 450 mw. the pressure ratio of the gas-turbine cycle is 14. air enters the compressor at 300 k and the turbine at 1400 k. the combustion gases leaving the gas turbine are used to heat the steam at 8 mpa to 400°c in a heat exchanger. the combustion gases leave the heat exchanger at 460 k. an open feedwater heater incorporated with the steam cycle operates at a pressure of 0.6 mpa. the condenser pressure is 20 kpa. assuming all the compression and expansion processes to be isentropic, determine (a) the mass flow rate ratio of air to steam, (b) the required rate of heat input in the combustion chamber, and (c) the thermal efficiency of the combined cycle.
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Consider a combined gas–steam power plant that has a net power output of 450 mw. the pressure ratio...
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