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Friday, 4 April 2014

Operation of Two Shaft Gas Turbine

Operation of Two Shaft Gas Turbine Points : Operation of Two Shaft Gas Turbine, Operation of double Shaft Gas Turbine In this two shaft turbine the high pressure turbine drives the compressor and the combination act a gas generator for the low pressure power turbine.
It is also used for large electricity generating units, with the power turbine designed to run at alternator speed without the need for an expensive gear box. A significant advantage is that the starter unit needs only be sized to turn over the gas generator variation of power is controlled by controlling the fuel supplied to the combustion chamber I this case the cycle pressure ratio and maximum temperature decrease as the power is reduced from the design valve with the result that the thermal efficiency deteriorate considerably at part load.

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