About Lesson
A gas turbine is a type of combustion engine that converts the energy from burning fuel into mechanical energy using a high-speed rotating shaft. It operates on the Brayton cycle, which involves compressing air, mixing it with fuel, igniting the mixture, and then expanding the high-pressure gases through a turbine to generate power.
How Does a Gas Turbine Work?
- Air Compression: Ambient air is compressed by a series of compressor blades, increasing its pressure.
- Combustion: The compressed air is mixed with fuel and ignited in a combustion chamber.
- Energy Expansion: The high-temperature, high-pressure gases expand through the turbine blades, causing the rotor to spin.
- Power Generation: The rotating shaft drives a generator to produce electricity.
Applications of Gas Turbines:
- Power Plants: Used in combined-cycle power plants for electricity generation.
- Aviation: Provide propulsion for aircraft engines.
- Marine Propulsion: Used in naval vessels and some commercial ships.
Advantages of Gas Turbines:
- Compact Size: Smaller and lighter compared to steam turbines, making them suitable for mobile applications.
- Quick Start-Up: Can reach full power quickly, making them ideal for peak shaving and emergency power.