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7.A two stage turbine with reheat drives an electrical alternator of output 33 MW and an internal...
An existing steam turbine operating on a reheat Rankine cycle in which the first stage turbine...
An existing steam turbine operating on a reheat Rankine cycle in
which the first stage turbine has an inlet pressure of 12.5MPa and
inlet temperature of 550 degree celcius. The second stage has an
inlet temperature of 500 degree celcius. Assuming both turbines and
water pump run at 100% isentropic efficiency. The steam leaves the
condenser as saturated liquid at 15kPa.
Based on the set up above, the engineer decides to add an open
feedwater heater (FWH) to the reheat...
Problem 8.021 SI Water is the working fluid in a Rankine cycle with reheat. Superheated vapor...
Problem 8.021 SI Water is the working fluid in a Rankine cycle with reheat. Superheated vapor enters the turbine at 10 MPa, 520°C, and the condenser pressure is 6 kPa. Steam expands through the first-stage turbine to 0.7 MPa and then is reheated to 520°C. The pump and each turbine stage have an isentropic efficiency of 80%. Determine for the cycle: (a) the heat addition, in kJ per kg of steam entering the first-stage turbine. (b) the percent thermal efficiency....
In a reheat-cycle power plant, steam enters the high-pressure turbine at 5 MPa, 450°C, and expands...
In a reheat-cycle power plant, steam enters the high-pressure turbine at 5 MPa, 450°C, and 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 (Vi 0.001 m/kg) leaves the condensor at 30°C, is pumped to 5 MPa, and returned to the steam generator. Each turbine is adiabatic, with an isentropic efficiency of 81.6 % and the pump efficiency is 848 %. If the total...
A steam power plant equipped with an open feed water heater as well as reheat arrangement,...
A steam power plant equipped with an open feed water heater as
well as reheat arrangement, as shown in figure 1, supplies 50 kg/s
of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a
part of steam is extracted at 7 bar and the remainder of the steam
is reheated to 350°C in a reheater and then expanded in L.P.
turbine down to 0.035 bar. The isentropic efficiency of both
turbines is 0.85:
(a) Plot the...
A steam power plant equipped with an open feed water heater as well as reheat arrangement,...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
A steam power plant is based on the Rankine cycle with reheat (refer to the figure below). Steam ...
A steam power plant is based on the Rankine cycle with reheat (refer to the figure below). Steam is produced by the boiler/superheater (H-1) at 100 bar and 600 C at a rate of 2.5 kgs. This is expanded to 10 bar in the turbine T-1 and then reheated to 600 °C in heater H-2. The steam is then expanded in turbine T-2 to a pressure of 0.1 bar. The steam is then condensed in condenser (C-1) which operates at...
3. In a reheat cycle, steam leaves the boiler and enters the high-pressure turbine (HPT) at...
3. In a reheat cycle, steam leaves the boiler and enters the high-pressure turbine (HPT) at 6 MPa and 440 °C. After expansion in the high-pressure turbine to 500 kPa, the steam is reheated to 480 °C and then expanded in the low-pressure turbine (LPT) to 10 kPa. The end states of both the HPT and LPT fall in the liquid-vapor mixture region. Draw the cycle diagram and the T-s diagram, and determine the work done to the pump, total...
A steam power plant equipped with an open feed water heater as well as reheat arrangement,...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
Thermodynamics 1 A thermal power plant based on an ideal reheat cycle uses steam as the...
Thermodynamics
1 A thermal power plant based on an ideal reheat cycle uses steam as the operating fluid and is operated between 800 psi and 2 psi. The pressure and temperature at the turbine inlet are 800 psi and 750° F. The steam is expanded in the turbine to 80 psi and then reheated to 700° F. The steam is then expanded to 2 psi. (a) Show the schematic identifying the major components in the power plant, i.e. boiler, turbine,...
Problem 1. (40) Water is the working fluid in an ideal Rankine cycle with reheat. Superheated...
Problem 1. (40) Water is the working fluid in an ideal Rankine cycle with reheat. Superheated vapor enters the turbine at 12 MPa, 480 °C and the pressure at the exit of the second stage turbine is 8 kPa. Steam expands through the first stage turbine to 1 MPa and then is reheated to 440 °C. Saturated liquid water leaves the condenser. After the pump, pressure goes back to 12 MPa. Find: (1) Sketch the process on a T-s diagram...
An existing steam turbine operating on a reheat Rankine cycle in
which the first stage turbine has an inlet pressure of 12.5MPa and
inlet temperature of 550 degree celcius. The second stage has an
inlet temperature of 500 degree celcius. Assuming both turbines and
water pump run at 100% isentropic efficiency. The steam leaves the
condenser as saturated liquid at 15kPa.
Based on the set up above, the engineer decides to add an open
feedwater heater (FWH) to the reheat...
In a reheat-cycle power plant, steam enters the high-pressure turbine at 5 MPa, 450°C, and 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 (Vi 0.001 m/kg) leaves the condensor at 30°C, is pumped to 5 MPa, and returned to the steam generator. Each turbine is adiabatic, with an isentropic efficiency of 81.6 % and the pump efficiency is 848 %. If the total...
A steam power plant equipped with an open feed water heater as
well as reheat arrangement, as shown in figure 1, supplies 50 kg/s
of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a
part of steam is extracted at 7 bar and the remainder of the steam
is reheated to 350°C in a reheater and then expanded in L.P.
turbine down to 0.035 bar. The isentropic efficiency of both
turbines is 0.85:
(a) Plot the...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
A steam power plant is based on the Rankine cycle with reheat (refer to the figure below). Steam is produced by the boiler/superheater (H-1) at 100 bar and 600 C at a rate of 2.5 kgs. This is expanded to 10 bar in the turbine T-1 and then reheated to 600 °C in heater H-2. The steam is then expanded in turbine T-2 to a pressure of 0.1 bar. The steam is then condensed in condenser (C-1) which operates at...
3. In a reheat cycle, steam leaves the boiler and enters the high-pressure turbine (HPT) at 6 MPa and 440 °C. After expansion in the high-pressure turbine to 500 kPa, the steam is reheated to 480 °C and then expanded in the low-pressure turbine (LPT) to 10 kPa. The end states of both the HPT and LPT fall in the liquid-vapor mixture region. Draw the cycle diagram and the T-s diagram, and determine the work done to the pump, total...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
Thermodynamics
1 A thermal power plant based on an ideal reheat cycle uses steam as the operating fluid and is operated between 800 psi and 2 psi. The pressure and temperature at the turbine inlet are 800 psi and 750° F. The steam is expanded in the turbine to 80 psi and then reheated to 700° F. The steam is then expanded to 2 psi. (a) Show the schematic identifying the major components in the power plant, i.e. boiler, turbine,...
Problem 1. (40) Water is the working fluid in an ideal Rankine cycle with reheat. Superheated vapor enters the turbine at 12 MPa, 480 °C and the pressure at the exit of the second stage turbine is 8 kPa. Steam expands through the first stage turbine to 1 MPa and then is reheated to 440 °C. Saturated liquid water leaves the condenser. After the pump, pressure goes back to 12 MPa. Find: (1) Sketch the process on a T-s diagram...
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