Question
In: Mechanical Engineering
A gas turbine operates as a cold-air standard Brayton cycle. Air enetrs the compressor at 300K...
A gas turbine operates as a cold-air standard Brayton cycle. Air enetrs the compressor at 300K and 100kPa and is compressed to 700kPa. During the heat addition process in the combustor, the temperature of the air increases to 1000K. The turbine and compressor can be assumed to be operating isentropically. Evaluate specific heat at 300K.
a. thermal efficiency of the cycle?
b. net work of the cycle (kj/kg)?
c. Back work ratio?
Solutions
samet mamat answered 2 years agoRelated Solutions
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Take K=1.4 a) Draw the T-S diagram of the cycle. [2] b) Calculate
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Air enters the compressor of an ideal cold air-standard Brayton cycle at 100 kPa, 300 K,...
Air enters the compressor of an ideal cold air-standard Brayton
cycle at 100 kPa, 300 K, with a mass flow rate of 6 kg/s. The
compressor pressure ratio is 10, and the turbine inlet temperature
is 1400 K.
For k = 1.4 and Cp = 1.005 kJ/kg,
calculate:
(a) the percent thermal efficiency of the cycle.
(b) the back work ratio.
(c) the net power developed, in kW
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A gas-turbine power plant operates on the simple Brayton cycle
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minimum and maximum temperatures in the cycle are 310 and 900 K,
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at the compressor inlet. Assuming an isentropic efficiency of 80%
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a gas turbine power plant operating on brayton cycle with a fuel compressor isentropic efficiency of...
a gas turbine power plant operating on brayton cycle with a fuel
compressor isentropic efficiency of 80 and turbine isentropic
efficiency of 85 percent and it has a pressure ratio of rp. The gas
temperature is 300K at a compressor inlet and 1300K at the turbine
inlet. Heat is received from a source of 1700K. Utilizing the
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which varies from 3 to 10, determine:
a) The gas temperature at the exits...
Air enters the compressor of an ideal air standard Brayton cycle at 100 kPa and 290...
Air enters the compressor of an ideal air standard Brayton cycle
at 100 kPa and 290 K with a mass flow rate (m⋅)
of 6 kg/s. The compressor pressure ratio is 10. The turbine inlet
temperature is 1500 K. If a regenerator with an effectiveness of
70% is incorporated in the cycle, determine (a) the thermal
efficiency (ηth,Brayton) of the cycle. Use the
PG model for air. (b) What-if Scenario: What would
the thermal efficiency be if the regenerator effectiveness...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of...
Air enters the compressor of a regenerative air-standard Brayton
cycle with a volumetric flow rate of 100 m3/s at 0.8 bar, 280 K.
The compressor pressure ratio is 20, and the maximum cycle
temperature is 1800 K. For the compressor, the isentropic
efficiency is 92% and for the turbine the isentropic efficiency is
95%. For a regenerator effectiveness of 86%, determine: (a) the net
power developed, in MW. (b) the rate of heat addition in the
combustor, in MW. (c)...
Air enters the compressor of an air-standard Brayton cycle with a volumetric flow rate of 60...
Air enters the compressor of an air-standard Brayton cycle with
a volumetric flow rate of 60 m3/s at 0.8 bar, 280 K. The
compressor pressure ratio is 17.5, and the maximum cycle
temperature is 1950 K. For the compressor, the isentropic
efficiency is 92% and for the turbine the isentropic efficiency is
95%.
Determine:
(a) the net power developed, in kW.
(b) the rate of heat addition in the combustor, in kW.
(c) the percent thermal efficiency of the cycle....
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of...
Air enters the compressor of a regenerative air-standard Brayton
cycle with a volumetric flow rate of 60 m3/s at 0.8 bar,
280 K. The compressor pressure ratio is 20, and the maximum cycle
temperature is 1950 K. For the compressor, the isentropic
efficiency is 92% and for the turbine the isentropic efficiency is
95%.
For a regenerator effectiveness of 86%, determine:
(a) the net power developed, in MW.
(b) the rate of heat addition in the combustor, in MW.
(c)...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of...
Air enters the compressor of a regenerative air-standard Brayton
cycle with a volumetric flow rate of 20 m3/s at 0.8 bar,
280 K. The compressor pressure ratio is 20, and the maximum cycle
temperature is 1950 K. For the compressor, the isentropic
efficiency is 92% and for the turbine the isentropic efficiency is
95%.
For a regenerator effectiveness of 86%, determine:
(a) the net power developed, in MW.
(b) the rate of heat addition in the combustor, in MW.
(c)...
1) In an air-standard Brayton cycle, the air enters the compressor at 0.1 MPa and 15?C....
1) In an air-standard Brayton cycle, the air enters the
compressor at 0.1 MPa and 15?C. The pressure leaving the compressor
is 1.0 MPa, and the maximum temperature in the cycle is 1100?C.
Determine The pressure and temperature at each point in the cycle.
The compressor work, turbine work, and cycle efficiency. For each
control volume analysed, the model is ideal gas with constant
specific heat at 300 K, and each process is steady state with no
kinetic or potential...
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