Rankine cycle heat rejection obtained from the .....Group of answer choicesCondenserPumpBoilerTurbine
Question
Rankine cycle heat rejection obtained from the .....Group of answer choicesCondenserPumpBoilerTurbine
Solution
The heat rejection in the Rankine cycle is obtained from the Condenser.
Here's a step-by-step explanation:
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Boiler: In the boiler, heat is added to the working fluid, which is usually water. This causes the water to evaporate into steam.
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Turbine: The high-pressure steam from the boiler is expanded in the turbine to produce work. The steam loses some of its energy in this process.
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Condenser: The low-pressure steam from the turbine is condensed back into water in the condenser. This is where heat rejection occurs, as the heat from the steam is transferred to the cooling water and then rejected to the environment.
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Pump: The condensed water is then pumped back into the boiler to repeat the cycle.
So, the heat rejection in the Rankine cycle is obtained from the Condenser.
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Q2. Consider an ideal Rankine cycle where the boiler operates at 12.5 MPa and thecondenser operates at 40 kPa. The steam is superheated after the boiler to 600 oC. Theturbine produces 100 MW of shaft work. Determine:a) The mass flow rate of water through the turbine (in kg/s).b) The work required for the pump.Q3. For the process in Q2. Determine:a) The heat input into the boiler (in MW).b) The heat out for the condenser (in MW)c) The thermal efficiency of the cycle (in %).
When a simple Rankine cycle is modified to include reheating for the same mass flowQuestion 1Select one:a.the pump work remains the same, the heat supplied is increased, the heat rejected is increased, the total turbine work increases, and the quality of steam leaving the turbine decreasesb.the pump work remains the same, the heat supplied is increased, the heat rejected stays the same, the total turbine work increases, and the quality of steam leaving the turbine decreasesc.the pump work remains the same, the heat supplied is increased, the heat rejected is increased, the total turbine work increases, and the quality of steam leaving the turbine increasesd.the pump work remains the same, the heat supplied remains the same, the heat rejected is increased, the total turbine work increases, and the quality of steam leaving the turbine increasese.the pump work remains the same, the heat supplied remains increases, the heat rejected stays the same, the total turbine work increases, and the quality of steam leaving the turbine increases
A simple ideal Rankine cycle operates between the pressure limits of 10 kPa and 4 MPa, with a turbine inlet temperature of 500C. The mass fraction of steam that condenses at the turbine exit isQuestion 1Select one:a.14%b.0%c.92%d.86%e.8%
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