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#4. To operate a steam turbine in part-load output, a throttling valve is used as shown....
Iam looking for the detailed solutions to this question. Absolute answers are given but Im lookin...
Iam looking for the detailed solutions to this question.
Absolute answers are given but Im looking for the step by step
solutions with every step clearly explained. Thanks In
advance..
Problem 8: Throttling valve for turbine load regulation (adapted from Cravalho & Smith) A throttle valve is used to control the power output of a reversible adiabatic gas turbine as shown in Fig. Q8. The two states 1 and 3 are fixed as follows P 4 x 105 N/m2 7,...
Can some one solve this question please Q4) A steam turbine at steady state is operated...
Can some one solve this question please
Q4) A steam turbine at steady state is operated at part load by throttling the steam to a lower pressure before it enters the turbine. Before throttling, the pressure and temperature are, respectively, 1.5 MPa and 320°C. After throttling, the pressure is 1 MPa. At the turbine exit, the steam is at 8 kPa and a quality of 90%. Heat transfer with the surroundings and all kinetic and potential energy effects can be...
Steam enters a well-insulated throttling valve (treat the process as adiabatic) at a mass flow rate...
Steam enters a well-insulated throttling valve (treat the process as adiabatic) at a mass flow rate of m=15 kg/min with an initial pressure of Pi= 550 kPa and initial temperature Ti= 200ºC and exits at a pressure of Pf= 200 kPa. What is the temperature of the steam upon exiting the valve?
3. Question 3: Entropy change in a diabatic steam turbine (20) Steam enters a reversible, adiabatic...
3. Question 3: Entropy change in a diabatic steam turbine (20) Steam enters a reversible, adiabatic turbine at 4 MPa and 520°C with a velocity of 60 m/s. The steam exhausts from the turbine at a pressure of 80 kPa with a velocity of 140 m/s. Determine the work output of the turbine per unit mass of steam flowing through the turbine. Steam Pi = 4 MPa Ti = 520°C Vi = 60 m/s Reversible, adiabatic turbine w System boundary...
Thermo one Question 5 A steam turbine generates energy in the form of work at the rate of 346.1...
Thermo one Question 5 A steam turbine generates energy in the form of work at the rate of 346.1 kJ/kg of steam. The steam at the inlet of the turbine is at 8 MPa, 480oC, and at a velocity of 163.5 m/s. The steam exits the turbine at 2 MPa, 240oC, and a velocity of 55.3 m/s. Heat transfer to the surroundings occurs where the outer surface (boundary) temperature is at 333.5oC. Determine the rate of entropy production (kJ/kg-K) within...
Steam lows through a heavily insulated ideal throttling valve. The valve is similar to the one...
Steam lows through a heavily insulated ideal throttling valve. The valve is similar to the one Casey Jones used many years ago to control his locomotive. It is used in this case to control the output of a turbine. The turbine heat loss is 20 kJ/kg. Ignore piping losses. b) Complete the system diagrams adding information to the dia ams below c) Draw Pv or Tv diagram for processes. t bine. e) Calculate the power output of the turbine. 30...
Problem 4 – Entropy transfer in a control volume (18 pts) An adiabatic reversible steam turbine...
Problem 4 – Entropy transfer in a control volume (18 pts) An
adiabatic reversible steam turbine steadily processes 2 kg/s of
steam at 5 MPa and 450°C, which is exhausted at 100 kPa and 100°C.
The turbine exhibits an isentropic efficiency of 0.85. a) Draw a
schematic representation of the system with all the energy
interactions involved. (2pts) b) Determine the h (kJ/kg) and s
(kJ/kg-K) at the inlet. (2 pts) c) Determine the actual h (kJ/kg)
and s (kJ/kg-K)...
5.(14 marks total) The sketch shows a system for producing superheated steam from hot liquid water....
5.(14 marks total) The sketch shows a system for producing superheated steam from hot liquid water. A steady flow of saturated liquid water enters at 1 at a pressure of P, = 200 kPa and passes through a valve which reduces the pressure to P, = 100 kPa. The resulting mixture enters a separation tank, from which saturated vapour at 4 flows out to a compressor which compresses it to Ps = 300 kPa, while saturated liquid at 3 is...
In the power plant shown in Figure P2 below, steam leaves the boiler at p3 P2...
In the power plant shown in Figure P2 below, steam leaves the boiler at p3 P2 6 MPa and ??-320°C, flows through the throttling valve, which drops the pressure to p4-4 MPa. then enters the turbine in which it expands to the condenser pressure of p5-10 kPa. The water then leaves the condenser at p 10 kPa and T1-40°C. The net power output is 450 MW. The turbine isentropic efficiency is 85% and that of the pump is 78%. Determine:...
2. Consider a process in which two tanks A and B are connected by a valve....
2. Consider a process in which two tanks A and B are connected by a valve. Tank A, which is insulated, has a volume of 600 liters and contains steam at 1.4 MPa, 300°C. Tank B, which is uninsulated, has a volume of 300 liters and contains steam at 200 kPa, 200°C. The valve connecting the two tanks is now opened and steam flows from A to B until the temperature in A reaches 250°C, at which time the valve...
Iam looking for the detailed solutions to this question.
Absolute answers are given but Im looking for the step by step
solutions with every step clearly explained. Thanks In
advance..
Problem 8: Throttling valve for turbine load regulation (adapted from Cravalho & Smith) A throttle valve is used to control the power output of a reversible adiabatic gas turbine as shown in Fig. Q8. The two states 1 and 3 are fixed as follows P 4 x 105 N/m2 7,...
Can some one solve this question please
Q4) A steam turbine at steady state is operated at part load by throttling the steam to a lower pressure before it enters the turbine. Before throttling, the pressure and temperature are, respectively, 1.5 MPa and 320°C. After throttling, the pressure is 1 MPa. At the turbine exit, the steam is at 8 kPa and a quality of 90%. Heat transfer with the surroundings and all kinetic and potential energy effects can be...
3. Question 3: Entropy change in a diabatic steam turbine (20) Steam enters a reversible, adiabatic turbine at 4 MPa and 520°C with a velocity of 60 m/s. The steam exhausts from the turbine at a pressure of 80 kPa with a velocity of 140 m/s. Determine the work output of the turbine per unit mass of steam flowing through the turbine. Steam Pi = 4 MPa Ti = 520°C Vi = 60 m/s Reversible, adiabatic turbine w System boundary...
Steam lows through a heavily insulated ideal throttling valve. The valve is similar to the one Casey Jones used many years ago to control his locomotive. It is used in this case to control the output of a turbine. The turbine heat loss is 20 kJ/kg. Ignore piping losses. b) Complete the system diagrams adding information to the dia ams below c) Draw Pv or Tv diagram for processes. t bine. e) Calculate the power output of the turbine. 30...
Problem 4 – Entropy transfer in a control volume (18 pts) An
adiabatic reversible steam turbine steadily processes 2 kg/s of
steam at 5 MPa and 450°C, which is exhausted at 100 kPa and 100°C.
The turbine exhibits an isentropic efficiency of 0.85. a) Draw a
schematic representation of the system with all the energy
interactions involved. (2pts) b) Determine the h (kJ/kg) and s
(kJ/kg-K) at the inlet. (2 pts) c) Determine the actual h (kJ/kg)
and s (kJ/kg-K)...
5.(14 marks total) The sketch shows a system for producing superheated steam from hot liquid water. A steady flow of saturated liquid water enters at 1 at a pressure of P, = 200 kPa and passes through a valve which reduces the pressure to P, = 100 kPa. The resulting mixture enters a separation tank, from which saturated vapour at 4 flows out to a compressor which compresses it to Ps = 300 kPa, while saturated liquid at 3 is...
In the power plant shown in Figure P2 below, steam leaves the boiler at p3 P2 6 MPa and ??-320°C, flows through the throttling valve, which drops the pressure to p4-4 MPa. then enters the turbine in which it expands to the condenser pressure of p5-10 kPa. The water then leaves the condenser at p 10 kPa and T1-40°C. The net power output is 450 MW. The turbine isentropic efficiency is 85% and that of the pump is 78%. Determine:...
2. Consider a process in which two tanks A and B are connected by a valve. Tank A, which is insulated, has a volume of 600 liters and contains steam at 1.4 MPa, 300°C. Tank B, which is uninsulated, has a volume of 300 liters and contains steam at 200 kPa, 200°C. The valve connecting the two tanks is now opened and steam flows from A to B until the temperature in A reaches 250°C, at which time the valve...
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