Podcast
Questions and Answers
What is the primary function of the compressor in a gas turbine?
What is the primary function of the compressor in a gas turbine?
- To discharge compressed air into the combustion chamber (correct)
- To expand the hot air through the turbine
- To add fuel and burn it
- To draw air into the turbine
What is the effect of higher combustion temperature on the efficiency of a gas turbine?
What is the effect of higher combustion temperature on the efficiency of a gas turbine?
- Does not affect efficiency
- Stops the operation of the turbine
- Increases efficiency (correct)
- Decreases efficiency
What determines the output power (power rating) of a gas turbine?
What determines the output power (power rating) of a gas turbine?
- The mass of hot gas flowing through it per unit time (correct)
- The type of fuel used in the combustion chamber
- The temperature of the air entering the turbine
- The speed of the compressor
Why is it best to operate gas turbines at the maximum possible temperature that its construction materials can handle?
Why is it best to operate gas turbines at the maximum possible temperature that its construction materials can handle?
What effect does cold air at the compressor intake have on gas turbine output?
What effect does cold air at the compressor intake have on gas turbine output?
What is the role of the combustion chamber in a gas turbine?
What is the role of the combustion chamber in a gas turbine?
What provides power in a simple gas turbine?
What provides power in a simple gas turbine?
What type of gas turbine is derived from the jet engines used in aircrafts?
What type of gas turbine is derived from the jet engines used in aircrafts?
In which type of gas turbine are the combustion chamber and the engine body separated?
In which type of gas turbine are the combustion chamber and the engine body separated?
Which type of gas turbine has a two-stage centrifugal compressor?
Which type of gas turbine has a two-stage centrifugal compressor?
What is the design of a typical turboprop aircraft engine like?
What is the design of a typical turboprop aircraft engine like?
Which type of gas turbine draws the air used to drive the turbine from the atmosphere?
Which type of gas turbine draws the air used to drive the turbine from the atmosphere?
What is an essential auxiliary for a gas turbine, as it is not self-starting?
What is an essential auxiliary for a gas turbine, as it is not self-starting?
What does a simple gas turbine lack?
What does a simple gas turbine lack?
What is a characteristic of a single shaft gas turbine?
What is a characteristic of a single shaft gas turbine?
Flashcards
Compressor's job
Compressor's job
Compresses air and sends it to the combustion chamber.
High combustion temperature effect
High combustion temperature effect
Increases the gas turbine's efficiency.
Gas turbine power rating
Gas turbine power rating
The amount of hot gas flowing through it per unit time.
Max temperature operation
Max temperature operation
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Cold intake air effect
Cold intake air effect
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Combustion chamber role
Combustion chamber role
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Simple gas turbine power source
Simple gas turbine power source
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Jet engine based gas turbine
Jet engine based gas turbine
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Separated combustion chamber
Separated combustion chamber
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Two-stage centrifugal compressor
Two-stage centrifugal compressor
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Turboprop design
Turboprop design
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Atmospheric air turbine
Atmospheric air turbine
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Gas turbine auxiliary
Gas turbine auxiliary
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Simple gas turbine lack
Simple gas turbine lack
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Single shaft gas turbine
Single shaft gas turbine
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Study Notes
Gas Turbine Fundamentals
- The primary function of the compressor in a gas turbine is to compress air for combustion.
Efficiency and Performance
- Higher combustion temperature increases the efficiency of a gas turbine.
- Operating gas turbines at the maximum possible temperature that its construction materials can handle is desirable.
- Cold air at the compressor intake increases gas turbine output.
Power Generation
- The output power (power rating) of a gas turbine is determined by multiple factors.
- In a simple gas turbine, power is provided by the turbine.
- The combustion chamber plays a crucial role in a gas turbine, where fuel is burned to produce hot gas.
Gas Turbine Types
- An industrial gas turbine is derived from the jet engines used in aircraft.
- In a twin-shaft gas turbine, the combustion chamber and the engine body are separated.
- A turbojet engine has a two-stage centrifugal compressor.
Turboprop Engines
- A typical turboprop aircraft engine combines a gas turbine engine with a propeller.
Air Supply and Starting
- An open-cycle gas turbine draws the air used to drive the turbine from the atmosphere.
- A starter motor is an essential auxiliary for a gas turbine, as it is not self-starting.
Characteristics
- A simple gas turbine lacks a separate compressor and turbine.
- A characteristic of a single shaft gas turbine is that it has a single shaft connecting the compressor, combustion chamber, and turbine.
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Description
Test your knowledge on the principles of gas turbines, including the process of air compression, fuel combustion, and power generation through turbine expansion.
