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

Introduction Introduction

• The word “turbine” was coined by the French engineer Claude Bourdin

• Derived from the Latin word for “whirling” or a “vortex”.

Types of Turbine Types of Turbine

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

Basic ComponentsBasic Components

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

CompressorCompressor

• Supplies high pressure air for combustion process

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

TurbinesTurbines• Consists of one or more stages designed to

develop rotational energy• Uses sets of nozzles & blades

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.

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

Disadvantages of GTDisadvantages of GT• Many parts under high stress• High pitched noise• Needs large quantities of gas• Large quantities of hot exhaust (target)

Applications of GTApplications of GT

•High Speed Cars.•Aircraft •Ships. • Power Generation (Used For Peak Load And As Stand-by Unit).