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Module IV

Gas Turbine - Introductions

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Gas turbine - Introduction

James Watt invented Steam engine

An intermediate fluid (steam) act on piston

Later Turbines replaced piston engine and steam turbines

become prominent Steam turbines requires a bulky and expensing steam

generating equipment

A much compact power plant can be made if the hot gas from

combustion itself is used for driving the turbine

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Advantages of Gas turbine

Absence of reciprocating and rubbing members whichreduces the vibration and balancing problem

High reliability

Low lubricating oil consumption High power to weight ratio