The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is

Compressors, Gas Turbines and Jet Engines
The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is

Compressed air before entering the combustion chamber is heated

Bled gas from turbine is heated and readmitted for complete expansion

Exhaust gases drive the compressor

Heated

Compressed air before entering the combustion chamber is heated

Bled gas from turbine is heated and readmitted for complete expansion

Exhaust gases drive the compressor

Heated

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Compressors, Gas Turbines and Jet Engines
Intercooling in gas turbines

Decreases net output but increases thermal efficiency

Increases net output and thermal efficiency both

Decreases net output and thermal efficiency both

Increases net output but decreases thermal efficiency

Decreases net output but increases thermal efficiency

Increases net output and thermal efficiency both

Decreases net output and thermal efficiency both

Increases net output but decreases thermal efficiency

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Compressors, Gas Turbines and Jet Engines
Gas turbines use following type of air compressor

Centrifugal type

Lobe type

Reciprocating type

Axial flow type

Centrifugal type

Lobe type

Reciprocating type

Axial flow type

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Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

p₂ = p₃/p₁

p₂ = p₁ × p₂

p₂ = p₁ × p₃

p₂ = p₁/p₃

p₂ = p₃/p₁

p₂ = p₁ × p₂

p₂ = p₁ × p₃

p₂ = p₁/p₃

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Compressors, Gas Turbines and Jet Engines
Turbofan engine employs

No air stream

Two or more air streams

One air stream

Solid fuel firing

No air stream

Two or more air streams

One air stream

Solid fuel firing

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by

Increasing the turbine work

Increasing the compression work

Both (A) and (C) above

Decreasing the compression work

Increasing the turbine work

Increasing the compression work

Both (A) and (C) above

Decreasing the compression work

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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is

Compressors, Gas Turbines and Jet Engines Intercooling in gas turbines

Compressors, Gas Turbines and Jet Engines Gas turbines use following type of air compressor

Compressors, Gas Turbines and Jet Engines The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

Compressors, Gas Turbines and Jet Engines Turbofan engine employs

Compressors, Gas Turbines and Jet Engines Work ratio of a gas turbine may be improved by

Compressors, Gas Turbines and Jet Engines
The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is

Compressors, Gas Turbines and Jet Engines
Intercooling in gas turbines

Compressors, Gas Turbines and Jet Engines
Gas turbines use following type of air compressor

Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

Compressors, Gas Turbines and Jet Engines
Turbofan engine employs

Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by