Egt rise with flow increase
Joined: Jun 2001
Posts: 518
Likes: 0
From: Chicago, IL, USA
Actually, now that I think about this for a second...
...in a piston engine you can get cooler EGTs with excessively rich fuel mixtures because the unburnt fuel absorbs some of the heat from combustion.
Is that the type of answer you're looking for?
...in a piston engine you can get cooler EGTs with excessively rich fuel mixtures because the unburnt fuel absorbs some of the heat from combustion.
Is that the type of answer you're looking for?
Joined: Mar 2002
Posts: 4,569
Likes: 1
From: Florida
What flow is being increased?
What cycle are we talking about?
Are we talking about an increase in thrust on a jet engine? or some sort of idle point where bleed air is being manipulated?
Are you willing to share the proceeds of the bet?, if not bugger off with ye trick questions
What cycle are we talking about?
Are we talking about an increase in thrust on a jet engine? or some sort of idle point where bleed air is being manipulated?
Are you willing to share the proceeds of the bet?, if not bugger off with ye trick questions
Joined: Feb 2005
Posts: 4,581
Likes: 0
From: flyover country USA
In the higher power regime, a gas turbine runs hotter at higher rpm because of the temperature "extracted" in the turbine to turn the compressor, which itself is delivering hotter air (adiabatic heating) to the burner.
But slowly accelerating out of idle, it's common to see the temp. cooler at 80% e.g. than at 65%. This is because the efficiency is falling off at lower rpm. Thus there is usually a "bucket" or "sweet spot" at part power where the turbine temp. is coolest.
But slowly accelerating out of idle, it's common to see the temp. cooler at 80% e.g. than at 65%. This is because the efficiency is falling off at lower rpm. Thus there is usually a "bucket" or "sweet spot" at part power where the turbine temp. is coolest.
