Open feed water heater in the power plant operating according to the Rankine cycle with ideal intermediate steam is used. Turbine inlet state is 10MPa 650C. Condenser pressure is 10 kPa. Intermediate steam taking takes place at a pressure of 2 MPa. The intermediate steam mass flow rate depends on the total mass flow. Find the ratio. Find the thermal efficiency. TIP: Treat the mass flow entering the turbine by saying 1, and r for the intermediate steam. Result: r = 0.239, yield 45.2%

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