Question
In: Mechanical Engineering
4. 4MPa, 350°C of water vapor enters the insulating turbines, and is discharged into 50kPa of...
4. 4MPa, 350°C of water vapor enters the insulating turbines,
and is discharged into 50kPa of saturated vapor after expansion.
Ignore kinetic energy and position energy.
1) Draw a schematic diagram and a T-s diagram of the turbine.
2) Obtain turbine efficiency.
3) Obtain entropy change from turbine.
Solutions
samet mamat answered 1 year agoRelated Solutions
Water vapor at 5 bar, 320°C enters a turbine operating at steady state with a volumetric...
Water vapor at 5 bar, 320°C enters a turbine operating at steady
state with a volumetric flow rate of 3 m3/s and expands
adiabatically to an exit state of 1 bar, 160°C. Kinetic and
potential energy effects are negligible.
Determine for the turbine:
(a) the power developed, in kW.
(b) the rate of entropy production, in kW/K.
(c) the percent isentropic turbine efficiency.
Water vapor at 5 bar, 320°C enters a turbine operating at steady state with a volumetric...
Water vapor at 5 bar, 320°C enters a turbine operating at steady
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adiabatically to an exit state of 1 bar, 200°C. Kinetic and
potential energy effects are negligible. Determine for the turbine:
(a) the power developed, in kW. (b) the rate of entropy production,
in kW/K. (c) the percent isentropic turbine efficiency.
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Water vapor enters a turbine operating at steady state at 480°C,
90 bar, with a velocity of 247 m/s, and expands adiabatically to
the exit, where it is saturated vapor at 12 bar, with a velocity of
113 m/s. The exit diameter is 0.22 m. Determine the power developed
by the turbine, in kW.
Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to...
Water vapor at 5 MPa, 320°C enters a turbine operating at steady
state and expands to 0.1 bar. The mass flow rate is 2.52 kg/s, and
the isentropic turbine efficiency is 92%. Stray heat transfer and
kinetic and potential energy effects are negligible.
Determine the power developed by the turbine, in kW.
Water vapor enters a subsonic diffuser at 0.5 bar, 175 °C, and 200 m/s. The diffuser...
Water vapor enters a subsonic diffuser at 0.5 bar,
175 °C, and 200 m/s. The diffuser inlet is 100 cm2. During passage
through the diffuser, the fluid velocity is reduced to 50 m/s,
pressure increases to 1.0 bar and heat transfer to the surroundings
is
0.5 kg/kJ. Determine
a) the final temperature,
b) the mass flow rate [kg/s] and
c) the outlet area [cm2]
Solid Aluminum hydroxide decomposes to produce aluminum oxide and water vapor. If 350 mL of water...
Solid Aluminum hydroxide decomposes to produce aluminum oxide
and water vapor. If 350 mL of water is produced at STP, how many
grams of aluminum hydroxide were used? How many grams of aluminum
oxide are produced?
Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at...
Water is the working fluid in an ideal Rankine cycle. Saturated
vapor enters the turbine at 16 MPa, and the condenser pressure is 8
kPa. The mass flow rate of steam entering the turbine is 50
kg/s.
Determine:
(a) the net power developed, in kW.
(b) the rate of heat transfer to the steam passing through the
boiler, in kW.
(c) the percent thermal efficiency.
(d) the mass flow rate of condenser cooling water, in kg/s, if the
cooling water...
At 25 C, the vapor pressure of pure water is 23.8 torr. What is the vapor...
At
25 C, the vapor pressure of pure water is 23.8 torr. What is the
vapor pressure of an aqueous solution that is 8.00% NaCl by mass?
Assume the NaCl is 100% dissociated.
The vapor pressure of ethonal (C2H5OH) is 672torr at 75°C. The vapor pressure of water is...
The vapor pressure of ethonal (C2H5OH) is 672torr at
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Ethonal and water forms solution that behave like ideal solution.
Calc vapor pressure of ethonal and water above the solution at
75°C.
1) At 24 C the vapor pressure of water is 3 kPa. The vapor pressure of...
1) At 24 C the vapor pressure of water is 3 kPa. The vapor
pressure of water over a sample is 2 kPa, what is the water
activity of the sample?
2) The water activity above a saturated NaCl solution is 0.75.
If a sample is enclosed in a jar with the NaCl solution and
equilibrium is achieved, what is the water activity of the sample?
NaCl and the sample are in separate containers within the jar.
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