. Gas turbine presentation (2)
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Transcript of . Gas turbine presentation (2)
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Contents Contents • Introduction • Turbine • Types of Turbine • Gas Turbine • Components of Gas turbine • Working Principle of Gas Turbine • Applications of GT• Advantages & Disadvantages of GT
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Introduction Introduction
• The word “turbine” was coined by the French engineer Claude Bourdin
• Derived from the Latin word for “whirling” or a “vortex”.
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Types of Turbine Types of Turbine
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Gas Turbine Gas Turbine
• Gas turbines combust liquid or gaseous fossil fuels in the presence of compressed air and then convert the thermal and kinetic energy of the product gases into mechanical energy
• Gas turbines burn fuels such as oil, nature gas and pulverized(powdered) coal
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Basic ComponentsBasic Components
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Basic ComponentsBasic Components• Compressor
Draws in air & compresses it• Combustion ChamberCombustion Chamber
Fuel pumped in and ignited to burn with compressed air
• Turbine Hot gases converted to work Can drive compressor & external load
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CompressorCompressor
• Supplies high pressure air for combustion process
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Combustion ChambersCombustion Chambers
• Where air & fuel are mixed, ignited, and burned
• Spark plugs used to ignite fuel
• Types Can: for small, centrifugal compressors Annular: for larger, axial compressors (LM
2500) Can-annular: for really large turbines
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TurbinesTurbines• Consists of one or more stages designed to
develop rotational energy• Uses sets of nozzles & blades
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Working Principle of GTWorking Principle of GT
• The compressed air passes to the combustion
chamber, where it is mixed with fuel and
burned. The combustion produces hot gases
that rush through the turbine blades held on a
rotor.
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Advantages of GTAdvantages of GT• Weight reduction of 70%• Simplicity• Reduced manning requirements• Quicker response time• Faster Acceleration/deceleration• Modular replacement• Less vibrations• More economical
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Disadvantages of GTDisadvantages of GT• Many parts under high stress• High pitched noise• Needs large quantities of gas• Large quantities of hot exhaust (target)
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Applications of GTApplications of GT
•High Speed Cars.•Aircraft •Ships. • Power Generation (Used For Peak Load And As Stand-by Unit).