investigation of a prototype industrial gas turbine combustor using ...

3. Experimental setups
3.4 The pressurized full burner setup
As the full burner did not fit the original plenum (Figure 3.7), the
high pressure facility was modified. A new plenum was built to fit the
full burner (Figure 3.8). In addition the liner section was expanded
to ensure a sufficiently long residence time for complete combustion to
be achieved, i.e. approximately 15 ms, and a combustor loading below
10 kg/s atm 1.8 m 3 . The square section of the liner was still 100×100 mm,
but the length was now 459 mm. The optical access was the same as
for the previous design, with the addition of a second optical access possibility
downstream of the first section (Figure 3.8). Cooling air was
channelled along the outside wall of the liner in order to avoid overheating
of the liner. This kept the liner outer wall temperature close to 300 ◦ C
during combustion.
The air was supplied to the Main and Pilot sections by the air compressor
Figure 3.8: The new plenum and test section, 1: DLE burner; 2: Liner
with quartz windows; 3 Emission probe position.
system of the high pressure facility. It was heated before the combustion
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