Question
In: Mechanical Engineering
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?
Solutions
samet mamat answered 2 years agoRelated Solutions
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 at 400 kPa, 980 K enters a turbine operating at steady state and exits at...
Air at 400 kPa, 980 K enters a turbine operating at steady state
and exits at 100 kPa, 670 K. Heat transfer from the turbine occurs
at an average outer surface temperature of 315 K at the rate of 30
kJ per kg of air flowing. Kinetic and potential energy effects are
negligible. Assuming the air is modeled as an ideal gas with
variations in specific heat, determine (a) the rate power is
developed, in kJ per kg of air...
Air enters a compressor operating at steady state at 1.05 bar, 300 K, with a volumetric...
Air enters a compressor operating at steady state at 1.05 bar,
300 K, with a volumetric flow rate of 48 m3/min and
exits at 12 bar, 400 K. Heat transfer occurs at a rate of 8 kW from
the compressor to its surroundings.
Assuming the ideal gas model for air and neglecting kinetic and
potential energy effects, determine the power input, 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.
Air enters the turbine of a gas turbine at 1400 kPa, 1400 K, and expands to...
Air enters the turbine of a gas turbine at 1400 kPa, 1400 K, and
expands to 100 kPa in two stages. Between the stages, the air is
reheated at a constant pressure of 350 kPa to 1400 K. The expansion
through each turbine stage is isentropic.
Determine:
(b) the heat transfer for the reheat process, in kJ/kg of air
flowing.
(c) the increase in net work as compared to a single stage of
expansion with no reheat.
Water at p1 = 20 bar, T1 = 400oC enters a turbine operating at steady state...
Water at p1 = 20 bar, T1
= 400oC enters a turbine operating at steady state and
exits at p2 = 1.5 bar, T2 =
220oC. The water mass flow rate is 4000 kg/hour. Stray
heat transfer and kinetic and potential energy effects are
negligible.
Determine the power produced by the turbine, in kW, and the rate of
entropy production in the turbine, in kW/K.
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.
Air enters a horizontal, constant-diameter heating duct operating at steady state at 280 K, 1 bar,...
Air enters a horizontal, constant-diameter heating duct
operating at steady state at 280 K, 1 bar, with a volumetric flow
rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The
flow area is 0.05 m2.
Assuming the ideal gas model with k = 1.4 for the air,
determine:
(a) the mass flow rate, in kg/s,
(b) the velocity at the inlet and exit, each in m/s, and
(c) the rate of heat transfer to the air, in kW
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