Question
In: Mechanical Engineering
A gas turbine air- standard cycle operates between a low pressure of 14.7 Psia and a...
A gas turbine air- standard cycle operates between a low pressure of 14.7 Psia and a high pressure of 60 Psia. The temperature of the gas at the inlet to the compressor and turbine are 60 and 1000 respectively. If 40,000 ft3 /min. of air enter the compressor and assuming k=1.41, compute:
a) The theoretical net power output, and
b) The air – standard thermal efficiency
Solutions
samet mamat answered 1 year agoRelated Solutions
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a. thermal efficiency of the cycle?
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A steam Rankine cycle operates between the pressure limits of
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A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1200 kPa. The working fluid is air, which enters the compressor at 300K at a rate of 150 m3/min and leaves the turbine at 773K. Using variable specific heats for air and assuming a compressor isentropic efficiency of 82 percent and a turbine isentropic efficiency of 88 percent, determine:
(a) the net power output
(b) the back work ratio
(c) the thermal efficiency
In a marine gas turbine unit a high-pressure turbine drives the compressor, and a low-pressure turbine...
In a marine gas turbine unit a high-pressure turbine drives the
compressor, and a low-pressure turbine drives the propeller through
suitable gearing. The overall pressure ratio is 4/1, and the
maximum temperature is 650⁰C. The isentropic efficiencies of the
compressor, High Pressure turbine, and Low Pressure turbine are
0.8, 0.83 and 0.85 respectively, and the mechanical efficiency of
both shafts is 98%.
Calculate the pressure entering the Low Pressure turbine when
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A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid...
A gas-turbine power plant operates on the simple Brayton cycle
with air as the working fluid and delivers 32 MW of power. The
minimum and maximum temperatures in the cycle are 310 and 900 K,
and the pressure of air at the compressor exit is 8 times the value
at the compressor inlet. Assuming an isentropic efficiency of 80%
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A gas turbine operates with two stages of compression with an intercooler between the stages. Air...
A
gas turbine operates with two stages of compression with an
intercooler between the stages. Air enters the first stage at 100
kPa and 300 K. The pressure ratio across each compressor stage is 5
to 1 and each stage has an isentropic efficiency of 85%. Air exits
the intercooler at 330 K. The maximum cycle temperature is 1500 K
and the cycle has a single turbine stage that works isentropically.
Calculate the mass flow rate of the air if...
A gas turbine operates with two stages of compression with an intercooler between the stages. Air...
A
gas turbine operates with two stages of compression with an
intercooler between the stages. Air enters the first stage at 100
kPa and 300 K. The pressure ratio across each compressor stage is 5
to 1 and each stage has an isentropic efficiency of 85%. Air exits
the intercooler at 330 K. The maximum cycle temperature is 1500 K
and the cycle has a single turbine stage that works isentropically.
Calculate the exit temperature of each compressor stage and...
1) A gas turbine operates on an ideal Joule cycle using air (γ = 1.4; R...
1) A gas turbine operates on an ideal Joule cycle using air (γ =
1.4; R = 0.287 kJ/kg K) as working fluid. Air enters the compressor
at temperature of 27◦C and pressure of 1.25 bar and is compressed
to 7.6 bar. When the maximum cycle temperature is limited to 800
oC, calculate,
(i) the thermal efficiency and work ratio of the cycle
(ii) the temperature of air exiting the turbine and the change
in specific entropy of turbine process...
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