Closed Cycle Constant Pressure | Gas Turbine Working | Types of Gas Turbines | Turbine Parts |Basics
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Closed Cycle Constant Pressure |
Closed Cycle Constant Pressure | Gas Turbine Working | Types of Gas Turbines | Turbine Parts |Basics
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In a closed cycle gas turbine, the working fluid is continuously circulated within a closed loop and is not discharged into the environment. This type of gas turbine is commonly used in certain industrial processes, such as combined cycle power plants, where high-efficiency power generation is required.
Here is a general description of the closed cycle gas turbine process:
Compression: The working fluid, which can be a gas or a vapor, is initially at low pressure and temperature. It is compressed by a compressor, which is usually driven by a turbine or an external power source. The compression process increases the pressure and temperature of the working fluid.
Combustion: The compressed working fluid is then heated by transferring heat from an external heat source, such as a fuel-fired boiler or a nuclear reactor. The heat is added at a constant pressure, maintaining a constant pressure throughout the combustion process. The working fluid absorbs the heat and its temperature increases further.
Expansion: The high-temperature and high-pressure working fluid passes through a turbine, which extracts energy from the fluid as it expands. The turbine converts the thermal energy of the working fluid into mechanical work, which is used to drive a generator or provide propulsion in certain applications.
Heat Rejection: After passing through the turbine, the working fluid is cooled down by transferring heat to a heat sink, such as a cooling tower or a heat exchanger. This step reduces the temperature and pressure of the working fluid.
Return to Compression: The cooled working fluid is then returned to the compressor, where it is compressed again to initiate another cycle. The cycle repeats continuously as long as the external heat source is available.
The closed cycle gas turbine operates at a constant pressure during the combustion process, allowing for efficient heat transfer and continuous circulation of the working fluid. The closed loop design also allows for better control over the working fluid and enables the use of different working fluids, depending on the specific application.
By using a closed cycle and a constant pressure combustion process, the closed cycle gas turbine can achieve high thermal efficiencies, especially when combined with additional components like heat recovery steam generators (HRSG) or steam turbines in a combined cycle configuration.
Overall, the closed cycle gas turbine offers advantages such as improved efficiency, flexibility in the choice of working fluids, and reduced environmental impact compared to other types of power generation technologies.
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5 سال پیش
در تاریخ 1399/01/07 منتشر شده
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