*Increase mechanical efficience
*Increase thermal efficience
*Improve cooling efficience
*Reduce specific fuel conjumption
*Better combustion
SURGING:
It is excess areodynamic pulsation is air steam .when the discharge volute pressure exceedes
the pressure build up in the diffuser & impeller
it produces a back flow of air from discharge to suction &it is characherized by noise &vibrate of
turbo surger speed its called surging
Noising at the T/C
Gulping air sound at the compressor
Howling or banging noise
CAUSE:
&*Scavenge space fre
*Exhaust trunking fire
*Poor power balance
*Fault turbine nozzle blade
*Suddenly load change
*Individual cylinder misfire
*Chocked scavenge ports
*Governor shut the fuel off
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