Impact of Methane and Hydrogen-Enriched Methane Pilot Injection on the Surface Temperature of a Scaled-Down Burner Nozzle Measured Using Phosphor Thermometry

The surface temperature of a burner nozzle using three different pilot hardware configurations was measured using lifetime phosphor thermometry with the ZnS:Ag phosphor in a gas turbine model combustor designed to mimic the Siemens DLE (Dry Low Emission) burner. The three pilot hardware configuratio...

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Bibliographic Details
Published in:International journal of turbomachinery, propulsion and power propulsion and power, 2022-11, Vol.7 (4), p.29
Main Authors: Feuk, Henrik, Pignatelli, Francesco, Subash, Arman, Bi, Ruike, Szász, Robert-Zoltán, Bai, Xue-Song, Lörstad, Daniel, Richter, Mattias
Format: Article
Language:English
Subjects:
Atom and Molecular Physics and Optics
Atom- och molekylfysik och optik
Combustion chambers
Comparative analysis
Configurations
Efficiency
Frame structures
Fysik
gas turbine model combustor
Gas turbines
Hardware
Hydrogen
Hydrogen as fuel
hydrogen-enrichment
Investigations
Lasers
Measurement techniques
Methane
Methane fuels
Natural Sciences
Naturvetenskap
Nozzles
phosphor thermometry
Phosphors
Physical Sciences
pilot injection combustion
Premixing
Reynolds number
Surface temperature
surface thermometry
Temperature
Temperature measurements
Thermometry
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Summary:The surface temperature of a burner nozzle using three different pilot hardware configurations was measured using lifetime phosphor thermometry with the ZnS:Ag phosphor in a gas turbine model combustor designed to mimic the Siemens DLE (Dry Low Emission) burner. The three pilot hardware configurations included a non-premixed pilot injection setup and two partially premixed pilot injections where one had a relatively higher degree of premixing. For each pilot hardware configuration, the combustor was operated with either methane or hydrogen-enriched methane (H2/CH4: 50/50 in volume %). The local heating from pilot flames was much more significant for hydrogen-enriched methane compared with pure methane due to the pilot flames being in general more closely attached to the pilot nozzles with hydrogen-enriched methane. For the methane fuel, the average surface temperature of the burner nozzle was approximately 40 K higher for the partially premixed pilot injection configuration with a lower degree of mixing as compared to the non-premixed pilot injection configuration. In contrast, with the hydrogen-enriched methane fuel, the differences in surface temperature between the different pilot injection hardware configurations were much smaller due to the close-to-nozzle frame structure.
ISSN:2504-186X
2504-186X
DOI:10.3390/ijtpp7040029