S
Dear all,
I have read some of the interesting thread here about gas turbine temperature control. I am interested in gas turbine control and its efficiency at part load.
The gas turbine operation is normally controlled by manipulating fuel flow and IGV to meet load and control turbine inlet temperature (as measured by exhaust temperature).
From what i've read, the GT can be controlled by:
1) manipulating fuel only to meet load (approximately constant air flow)
2) manipulating both fuel and IGV to meet load and exhaust temperature.
For GT with simple cycle operation (no HRSG), at part load operation, the efficiency of fuel control only can be higher than control with fuel and IGV control.
The GT that I look for shows high turbine exhaust temperature of about 1100 deg F even in part load (ambient temp of 80-90 deg F), with the brochure indicating exhaust temperature of just 700-800 deg F (iso).
Can we just use fuel control only (to reduce exhaust temp and increase efficiency)? or the GT is automatically configured to use both IGV and fuel control for simple operation at part load operation?
Thanks
I have read some of the interesting thread here about gas turbine temperature control. I am interested in gas turbine control and its efficiency at part load.
The gas turbine operation is normally controlled by manipulating fuel flow and IGV to meet load and control turbine inlet temperature (as measured by exhaust temperature).
From what i've read, the GT can be controlled by:
1) manipulating fuel only to meet load (approximately constant air flow)
2) manipulating both fuel and IGV to meet load and exhaust temperature.
For GT with simple cycle operation (no HRSG), at part load operation, the efficiency of fuel control only can be higher than control with fuel and IGV control.
The GT that I look for shows high turbine exhaust temperature of about 1100 deg F even in part load (ambient temp of 80-90 deg F), with the brochure indicating exhaust temperature of just 700-800 deg F (iso).
Can we just use fuel control only (to reduce exhaust temp and increase efficiency)? or the GT is automatically configured to use both IGV and fuel control for simple operation at part load operation?
Thanks