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In gas turbine starting what is the relation between IGV angle and exhust temperature?

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Question added by Khalid Rwaili , Head of instrument disciplines , Al Furat Petroleum Company(AFPC), Damascus
Date Posted: 2014/08/19
Nidal Elsayed
by Nidal Elsayed , technical advisor /generator specialist , Granite international services

Exhaust temperature is directly proportional to IGV to referenced

temperature within certain limit to the compressor

Agenor Benedito Da Silva
by Agenor Benedito Da Silva , Gas Turbines Controls Systems Upgrades Lead , Solar Turbines Europe S.A

The IGV temperature control reference is basically the same as the CPD-biased exhaust temperature control reference. (Some older units had a 5-10 deg F offset, making the IGV exhaust temp control reference slightly lower.

Adeel Ahmed
by Adeel Ahmed , Incharge Overhaul Workshop , Sui Northern Gas Pipelines Limited

Exhaust temperature is directly proportional to IGV angle. If IGV angle is large, there will be high exhaust temperature.

PRABHAKARAN KAMARAJ
by PRABHAKARAN KAMARAJ , Instrumentation lead , HOT Engineering and Construction Company

The IGV ( INLET GUIDE VANE) controls the amount of inlet air entering the gas turbine. Depend of the speed control system air to fuel ratio will be adjusted,IGV operates -30 to +5 angle roataion, the IGV opens to keep exhaust more and speed up the turbine speed

Hassan Al Yagoub
by Hassan Al Yagoub , Advisor - Human Capital Management , Ministry of Human Resources and Social Development

The IGV controls the amount of inlet air entering the gas turbine. Thus, if the amount of air to fuel ratio is not constant. Then the higher the IGV, the lower the exhaust temperature. 

Using this principle, the IGV opens to keep exhaust temperature rerferenced within certain limit.

mohamed eliwa
by mohamed eliwa , instrument and control engineer , egyptian maintenance company 'emc'

igv modulate in order to keep const exhaust temp doesnot exceed limit520 cent grade for various loadind requirements .

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