Question
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A steam turbine expands steam from 70 bar, 300 °C, to 6.5 bar. The flow rate...
A steam turbine expands steam from 70 bar, 300 °C, to 6.5 bar. The flow rate of steam is 2.5 kg/s and the turbine generates 500 kW of power.
a) Determine the temperature at the outlet.
b) Determine the efficiency of the turbine.
c) Determine the entropy generation.
Solutions
Amanda K answered 1 month agoRelated Solutions
Steam at 5MPa and 300°C enters a turbine in a steady flow manner, from the turbine...
Steam at 5MPa and 300°C enters a turbine in a
steady flow manner, from the turbine the steam expands to
200kPa with a quality of 90%. Find the
following:
The work done by the steam to the turbine in
kj/kg
The amount of steam flow rate needed in kg/hr
if the turbine produces 200kW of power
The efficiency of the expansion process
Steam at 10 bar and 330°C is fed to an adiabatic turbine at a mass flow...
Steam at 10 bar and 330°C is fed to an adiabatic turbine at a
mass flow rate of m = 5 kg/s. The output stream is saturated steam
at 1.1 bar. The inlet steam flows
through a 15 cm diameter pipe and the exit steam discharges
through a 20 cm diameter pipe.
a) Calculate the velocity of the input and output streams in
m/s.
b) The power generated by the turbine in kW
The mass flow rate of steam through an ideal Rankine turbine ( with an isentropic turbine...
The mass flow rate of steam through an ideal Rankine turbine (
with an isentropic turbine and an isentropic pump) is 30lbm/s. The
water and or steam is at a pressure of 1000 psia throughout the
boiler and superheater and exits the superheater at a temperature
of 600 F. The condenser is at a pressure of 2 psia, and the water
exits the condenser as a saturated liquid. Calculate the
following.
(a) the power output of the turbine
(b) the...
Steam at 5mpa and 300C enters a turbine in a steady flow manner, from the turbine...
Steam at 5mpa and 300C enters a turbine in a steady flow manner,
from the turbine the steam expands to 200 kpa with a quality of
90%. FInd the ff:
a. The work done by the steam to the turbine in kj/kg
b. The amount of steam flow rate needed in kg/hr if the turbine
produces 200kW of power
c. The efficiency of the expansion process
The steady flow rate of steam through an adiabatic turbine is 2.5 kg/s . The steam...
The steady flow rate of steam through an adiabatic turbine is
2.5 kg/s . The steam at 600 oc and 10 bar enters the
turbine through pipeline 10 cm in diameter. The steam exits the
turbine through at pipeline 25 cm in diameter at a temperature 400
oc and pressure of 1 bar.
State the steady flow energy equation
At the inlet conditions of the turbine, obtain from steam
tables
The
saturation temperature of steam at 10 bar
Specific
volume...
The steady flow rate of steam through an adiabatic turbine is 2.5 kg/s . The steam...
The steady flow rate of steam through an adiabatic turbine is
2.5 kg/s . The steam at 600 oc and 10 bar enters the
turbine through pipeline 10 cm in diameter. The steam exits the
turbine through at pipeline 25 cm in diameter at a temperature 400
oc and pressure of 1 bar.
State the steady flow energy equation
At the inlet conditions of the turbine, obtain from steam
tables
The
saturation temperature of steam at 10 bar
Specific
volume...
Steam enters the nozzle of an impulse turbine stage at 60 bar and 500 °C and...
Steam enters the nozzle of an impulse turbine stage at 60 bar
and 500 °C and leaves at 20 bar. Flow is adiabatic and reversible.
The nozzle angle is 20°. The moving blade is symmetric, travels at
optimum velocity, and assumed to be frictionless. It is also
assumed that there is neither expansion nor contraction of the
steam flow through the blade passage. Draw the velocity diagram and
calculate (a) the blade efficiency and (b) the stage
efficiency.
Steam enters the nozzle of an impulse turbine stage at 60 bar and 500 °C and...
Steam enters the nozzle of an impulse turbine stage at
60 bar and 500 °C and leaves at 20 bar. Flow is adiabatic and
reversible. The nozzle angle is 20°. The moving blade is symmetric,
travels at optimum velocity, and assumed to be frictionless. It is
also assumed that there is neither expansion nor contraction of the
steam flow through the blade passage. Draw the velocity diagram and
calculate (a) the blade efficiency and (b) the stage
efficiency.
Steam is supplied to a turbine at 50Bar, 400oC. It expands in the first stage until...
Steam is supplied to a turbine at 50Bar, 400oC. It expands in
the first stage until it is dry saturated and then reheated to
400oC before expanding in the second stage to a condenser pressure
of 0.05 Bar. Calculate the work output, Specific Steam Consumption
(SSC) and the Rankine efficiency Compare these values with those
obtained by a single stage expansion without reheat. Note - Neglect
feed pump work
Steam enters a turbine at a rate of 550 kg/hr. The steam enters the turbine at...
Steam enters a turbine at a rate of 550 kg/hr. The steam enters
the turbine at 28 atm and 350°C at a linear velocity of 55 m/s. The
steam leaves the turbine at a point 3.5 m below the turbine inlet
at atmospheric pressure and a velocity of 355 m/s. The turbine
delivers shaft work at a rate of 50 kW, and the heat loss from the
turbine is estimated to be 2250 kcal/hr.
What is the temperature of the...
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