In a particular reheat-cycle power plant, steam enters the high-pressure turbine at 5 MPa, 450°C, expands to 0.5 MPa, after which it is reheated to 450°C. The steam is then expanded through the low-pressure turbine to 7.5 kPa. Liquid water leaves the condenser at 30°C, is pumped to 5 MPa, and is then returned to the steam generator. Each turbine is adiabatic with an isentropic efficiency of 87 percent, and the pump efficiency is 82 percent. If the total power output of the turbines is 10000 kW, determine (a) The mass flow rate of steam.
(b) The pump power input.
(c) The thermal efficiency of the power plant.
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