A steam power plant with a capacity of 200 MW operating on a simple nonideal Rankine...

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A steam power plant with a capacity of 200 MW operating on a simple nonideal Rankine cycle. Steam enters the turbine at 12.5 MPa and 525°C and is cooled in the condenser at a pressure of 10 kPa and the water leaving the condenser is subcooled by 5.81°C. The isentropic efficiency for the turbine is 85% and that of the pump is 90%. Determine: (i) the quality of the steam at the turbine exit (units: unitless), (ii) the thermal efficiency of the cycle (units: %), (iii) the enthalpy at the turbine exit (units: kJ/kg), (iv) the net work output (units: kJ/kg) and (v) the mass flow rate of the steam (kg/s). [Marks=6%] [Marks=6%] [Marks=6%] [Marks=6%] [Marks=6%] A steam power plant with a capacity of 200 MW operating on a simple nonideal Rankine cycle. Steam enters the turbine at 12.5 MPa and 525°C and is cooled in the condenser at a pressure of 10 kPa and the water leaving the condenser is subcooled by 5.81°C. The isentropic efficiency for the turbine is 85% and that of the pump is 90%. Determine: (i) the quality of the steam at the turbine exit (units: unitless), (ii) the thermal efficiency of the cycle (units: %), (iii) the enthalpy at the turbine exit (units: kJ/kg), (iv) the net work output (units: kJ/kg) and (v) the mass flow rate of the steam (kg/s). [Marks=6%] [Marks=6%] [Marks=6%] [Marks=6%] [Marks=6%]

Answer rating: 100% (QA)

To solve the problem we can use the basic principles of the Rankine cycle and the properties of steam Here are the solutions to each part of the question i To determine the quality of the steam at the ... View the full answer