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2) Show that in a 50% reaction turbine stage, the maximum stage efficiency is a is...
power plant /Steam Turbines/Impules Turbine i need solution in 30 minutes Q2) A single stage simple...
power plant /Steam Turbines/Impules Turbine
i need solution in 30 minutes
Q2) A single stage simple impulse turbine generator set is to operate under the following conditions. Steam at inlet :8 bar, dry saturated Exhaust :0.2 bar Nozzle efficiency :0.9 Nozzle angle :15° Internal efficiency :0.75 Mechanical efficiency :0.92 Generator efficiency :0.9 Find (a) the mean blade speed for maximum blading efficiency, (b) the steam flow rate for developing 200 kW.
A Pelton wheel turbine (at maximum efficiency) is designed for a water head H of 80...
A Pelton wheel turbine (at maximum efficiency) is designed for a water head H of 80 ft. The wheel having a diameter of 5 ft with a rotating speed of the wheel is 130 rpm. The nozzle efficiency is: Select one: a. 0.8 b. 0.9 C. 0.86 O d. 0.95
Q2 Figure 2.1 shows the velocity diagram for an axial turbine stage. The turbine rotor blade...
Q2 Figure 2.1 shows the velocity diagram for an axial turbine stage. The turbine rotor blade speed is 80 m's. Exhaust gas flow through the turbine stage with a constant axial velocity (2) at 90 m/s. List of relative and absolute flow angles at the rotor inlet and outlet are given in APPENDIX D for each student, respectively. At rotor inlet At rotor outlet B3 Cx2 = 90 m/s B2 Cx3 = 90 m/s W2 0.3 Cys 44 U =...
5.4 The following particulars apply to a two-row velocity compounded impulse stage of a turbine: ...
5.4 The following particulars apply to a two-row velocity compounded impulse stage of a turbine: nozzle angle 17°; blade speed 125 m/s; exit angles of the first row moving blades, the fixed blades, and the second row moving blades, 22, 26, and 30° respectively. Take the blade velocity coefficient for each row of blades as 0.9, and assume that the absolute velocity of the steam leaving the stage is in the axial direction. Draw the velocity diagram for the stage...
power plant / Steam Turbine/ i need solution in 24 hour 7.1 How does a steam...
power plant / Steam Turbine/ i need solution in 24 hour
7.1 How does a steam turbine convert energy in steam to shaft work? 7.2 What do you understand by (a) a nozzle, (b) a diffusor? 7.3 What is a compressible fluid? 7.4 What is the velocity of a pressure pulse in an isentropic flow? 7.5 What is the velocity of sound in an ideal gas? On what factors does it depend? 7.6 What is a stagnation state? 7.7 What...
Problem 10.4 aircraft propulsion farokhi A turbine stage is designed with a constant axial velocity of...
Problem 10.4 aircraft propulsion farokhi
A turbine stage is designed with a constant axial velocity of
250 m/s and zero exit swirl. For a rotor rotational speed Um at the
pitchline of 600 m/s. Calculate and comment on your results
a) the nozzle exit flow angle, ?2 in degrees for ◦Rm = 0.50
b) the nozzle exit flow angle, ?2 in degrees for ◦Rm = 0.0
c) the rotor specific work at the pitchline radius, for ◦Rm =
0.50 and...
4. A regenerative two-stage gas turbine with reheat operating on the standard-air Brayton cycle i...
4. A regenerative two-stage gas turbine with reheat operating on
the standard-air Brayton cycle is illustrated in Figure 3. In an
ideal Brayton cycle, the processes in the turbines and compressor
are adiabatic and isentropic, and the air flows through the
combustor and heat exchangers at constant pressure.
a) Show that the maximum total work output is
developed when the pressure ratio is the same across each stage, if
the temperature at the inlet to each turbine stage is the...
Show that the maximum efficiency of a transformer-coupled Class A amplifier is 50%.
Show that the maximum efficiency of a transformer-coupled Class A amplifier is 50%.
The maximum efficiency of a steam turbine cycle with a steam temperature of 556oC and a...
The maximum efficiency of a steam turbine cycle with a steam temperature of 556oC and a cooling water temperature of 27oC is (give your answer in %) ______________.
Q4. A turbine stage has a loading factor (V)of 1, reaction (R) of 0.5, blade velocity...
Q4. A turbine stage has a loading factor (V)of 1, reaction (R) of 0.5, blade velocity (U) of 400. If exit velocity (V2) from stator, exit at an angle of z= 45 degrees, what will be its value?
power plant /Steam Turbines/Impules Turbine
i need solution in 30 minutes
Q2) A single stage simple impulse turbine generator set is to operate under the following conditions. Steam at inlet :8 bar, dry saturated Exhaust :0.2 bar Nozzle efficiency :0.9 Nozzle angle :15° Internal efficiency :0.75 Mechanical efficiency :0.92 Generator efficiency :0.9 Find (a) the mean blade speed for maximum blading efficiency, (b) the steam flow rate for developing 200 kW.
A Pelton wheel turbine (at maximum efficiency) is designed for a water head H of 80 ft. The wheel having a diameter of 5 ft with a rotating speed of the wheel is 130 rpm. The nozzle efficiency is: Select one: a. 0.8 b. 0.9 C. 0.86 O d. 0.95
Q2 Figure 2.1 shows the velocity diagram for an axial turbine stage. The turbine rotor blade speed is 80 m's. Exhaust gas flow through the turbine stage with a constant axial velocity (2) at 90 m/s. List of relative and absolute flow angles at the rotor inlet and outlet are given in APPENDIX D for each student, respectively. At rotor inlet At rotor outlet B3 Cx2 = 90 m/s B2 Cx3 = 90 m/s W2 0.3 Cys 44 U =...
5.4 The following particulars apply to a two-row velocity compounded impulse stage of a turbine: nozzle angle 17°; blade speed 125 m/s; exit angles of the first row moving blades, the fixed blades, and the second row moving blades, 22, 26, and 30° respectively. Take the blade velocity coefficient for each row of blades as 0.9, and assume that the absolute velocity of the steam leaving the stage is in the axial direction. Draw the velocity diagram for the stage...
power plant / Steam Turbine/ i need solution in 24 hour
7.1 How does a steam turbine convert energy in steam to shaft work? 7.2 What do you understand by (a) a nozzle, (b) a diffusor? 7.3 What is a compressible fluid? 7.4 What is the velocity of a pressure pulse in an isentropic flow? 7.5 What is the velocity of sound in an ideal gas? On what factors does it depend? 7.6 What is a stagnation state? 7.7 What...
Problem 10.4 aircraft propulsion farokhi
A turbine stage is designed with a constant axial velocity of
250 m/s and zero exit swirl. For a rotor rotational speed Um at the
pitchline of 600 m/s. Calculate and comment on your results
a) the nozzle exit flow angle, ?2 in degrees for ◦Rm = 0.50
b) the nozzle exit flow angle, ?2 in degrees for ◦Rm = 0.0
c) the rotor specific work at the pitchline radius, for ◦Rm =
0.50 and...
4. A regenerative two-stage gas turbine with reheat operating on
the standard-air Brayton cycle is illustrated in Figure 3. In an
ideal Brayton cycle, the processes in the turbines and compressor
are adiabatic and isentropic, and the air flows through the
combustor and heat exchangers at constant pressure.
a) Show that the maximum total work output is
developed when the pressure ratio is the same across each stage, if
the temperature at the inlet to each turbine stage is the...
Q4. A turbine stage has a loading factor (V)of 1, reaction (R) of 0.5, blade velocity (U) of 400. If exit velocity (V2) from stator, exit at an angle of z= 45 degrees, what will be its value?
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