Imapct of the Ambient Tempreture on Gas Turbine Efficiency
Imapct of the Ambient Tempreture on Gas Turbine Efficiency
(OP)
Dear All,
I would like to know if there is studies regarding the Imapct of the Ambient Tempreture on Gas Turbine Efficiency.
I would appreciate any information on that matter.
Thank you a lot
--Amr Salah
I would like to know if there is studies regarding the Imapct of the Ambient Tempreture on Gas Turbine Efficiency.
I would appreciate any information on that matter.
Thank you a lot
--Amr Salah





RE: Imapct of the Ambient Tempreture on Gas Turbine Efficiency
I'm not sure what, in particular, you are looking for. In general, ambient temperature (aka compressor inlet temperature, or CIT) has a definite impact on gas turbine performance based on the fundamental principals of thermodynamics and the ideal gas law (pv=RT). The gas turbine is generally designed for optimum performance (efficiency) at a defined set of inlet conditions at base load. Deviation from these defined inlet conditions will have an impact on performance. The quantitative effects on gas turbine performance as a result of varying CITs are unique for each engine model (the reason is that the compressor volume flow rate is changed due to Mach number effects and the cycle pressure ratio is changed because turbine inlet temperature (TIT) is normally held constant at base load conditions). If you are looking for an in-depth technical reference, try "Gas Turbine Performance" by Walsh and Fletcher.
Do you have a specific gas turbine for which you would like to have correction curve for ambient temperature? If so, this is generally available from the gas turbine manufacturer.
RE: Imapct of the Ambient Tempreture on Gas Turbine Efficiency
The ambient humidity can have a significant effect upon GT efficiency as well (as you will learn from the book referenced by Steve58).
RE: Imapct of the Ambient Tempreture on Gas Turbine Efficiency
RE: Imapct of the Ambient Tempreture on Gas Turbine Efficiency
http://
ger3567h has the correction curves for gt performance, fig 9, 10 and 11.
these curves are actually used in practice to correct the unit's output to ISO conditions.
HTH
saludos.
a.