Question
In: Mechanical Engineering
Water vapor at 800 lbf/in.2, 1000 F enters a turbine operating at steady state and expands...
Water vapor at 800 lbf/in.2, 1000 F enters a turbine operating at
steady state and expands adiabatically to 2 lbf/ in.2, developing
work at a rate of 490 Btu per lb of vapor flowing. Determine the
condition at the turbine exit: two- phase liquid–vapor or
superheated vapor? Also, evaluate the isentropic turbine
efficiency. Kinetic and potential energy effects are
negligible.
Solutions
samet mamat answered 2 years agoRelated Solutions
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.
Air expands through a turbine operating at steady state. At the inlet, p1 = 150 lbf/in.2,...
Air expands through a turbine operating at steady state. At the
inlet, p1 = 150 lbf/in.2,
T1 = 1400°R, and at the exit,
p2 = 14.8 lbf/in.2,
T2 = 900°R. The mass flow rate of air entering
the turbine is 11 lb/s, and 65,000 Btu/h of energy is rejected by
heat transfer.
Neglecting kinetic and potential energy effects, determine the
power developed, in hp.
Air expands through a turbine operating at steady state. At the inlet, p1 = 150 lbf/in.2,...
Air expands through a turbine operating at steady state. At the
inlet, p1 = 150 lbf/in.2,
T1 = 1400°R, and at the exit,
p2 = 14.8 lbf/in.2,
T2 = 900°R. The mass flow rate of air entering
the turbine is 5 lb/s, and 65,000 Btu/h of energy is rejected by
heat transfer.
Neglecting kinetic and potential energy effects, determine the
power developed, in hp.
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
state with a volumetric flow rate of 3 m3/s and expands
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.
Water vapor enters a turbine operating at steady state at 480°C, 90 bar, with a velocity...
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.
Air enters a turbine operating at steady state at 6 bar, 1200 K and expands to...
Air enters a turbine operating at steady state at 6 bar, 1200 K
and expands to 0.8 bar. The turbine is well insulated, and kinetic
and potential energy effects can be neglected.
Assuming ideal gas behavior for the air, what is the maximum
theoretical work that could be developed by the turbine in kJ per
kg of air flow?
Air enters a turbine operating at steady state at 6 bar, 1600 K and expands to...
Air enters a turbine operating at steady state at 6 bar, 1600 K
and expands to 0.8 bar. The turbine is well insulated, and kinetic
and potential energy effects can be neglected. Assuming ideal gas
behavior for the air, what is the maximum theoretical work that
could be developed by the turbine in kJ per kg of air flow?
Air enters a turbine operating at steady state at 10 bar, 1200 K and expands to...
Air enters a turbine operating at steady state at 10 bar, 1200 K
and expands to 0.8 bar. The turbine is well insulated, and kinetic
and potential energy effects can be neglected. Assuming ideal gas
behavior for the air, what is the maximum theoretical work that
could be developed by the turbine in kJ per kg of air flow?
Saturated water vapor at 300°F enters a compressor operating at steady state with a mass flow...
Saturated water vapor at 300°F enters a compressor operating at
steady state with a mass flow rate of 5 lb/s and is compressed
adiabatically to 750 lbf/in.2
If the power input is 2150 hp, determine for the compressor:
(a) the percent isentropic compressor efficiency and
(b) the rate of entropy production, in hp/°R.
Ignore kinetic and potential energy effects.
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