Computational and experimental investigation of emissions in a highly humidified premixed flame
(2003) 2003 ASME Turbo Expo 1. p.819-827- Abstract
- Emission formation and flame stability were investigated, both experimentally and computationally, for premixed combustion with varying amounts of water vapor in the mixture. Emission measurements were made in a gas turbine combustor at atmospheric conditions, using Danish Natural Gas (NG) as fuel. The emissions were mapped as a function of humidity, inlet air temperature, equivalence ratio and aerodynamic load. Operating conditions were chosen to match what can be expected from e.g. an EvGT cycle for power generation. The inlet air temperature was slightly lower than the inlet temperatures that would be found in a recuperated cycle. The degree of humidity was varied from 0w% to 33w% of the airflow in the experiment, while the air inlet... (More)
- Emission formation and flame stability were investigated, both experimentally and computationally, for premixed combustion with varying amounts of water vapor in the mixture. Emission measurements were made in a gas turbine combustor at atmospheric conditions, using Danish Natural Gas (NG) as fuel. The emissions were mapped as a function of humidity, inlet air temperature, equivalence ratio and aerodynamic load. Operating conditions were chosen to match what can be expected from e.g. an EvGT cycle for power generation. The inlet air temperature was slightly lower than the inlet temperatures that would be found in a recuperated cycle. The degree of humidity was varied from 0w% to 33w% of the airflow in the experiment, while the air inlet temperature was varied from 500K to 800K. Computations were made using a single Perfectly Stirred Reactor (PSR) model and a reaction scheme with 821 reactions and 69 species. It was found that the NO<sub>X</sub> emissions were strongly reduced by the addition of water. Most of this decrease vanishes in practical combustion since richer combustion is required to keep CO emissions (combustion efficiency) at a tolerable level. The maximum humidity was found to be dependent on inlet air temperature and aerodynamic load. In this experiment, the maximum humidity achieved was 33%. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/613282
- author
- Hermann, Fredrik LU ; Klingmann, Jens LU and Gabrielsson, Rolf LU
- organization
- publishing date
- 2003
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Combustion efficiency, Premixed flame, Perfectly stirred reactor (PSR)
- host publication
- American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI
- volume
- 1
- pages
- 819 - 827
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- 2003 ASME Turbo Expo
- conference location
- Atlanta, GA, United States
- conference dates
- 2003-06-16 - 2003-06-19
- external identifiers
-
- scopus:0347578111
- language
- English
- LU publication?
- yes
- id
- 76f0ed82-c2d6-42a4-9048-94033540d1a0 (old id 613282)
- date added to LUP
- 2016-04-04 12:04:18
- date last changed
- 2022-03-16 00:14:00
@inproceedings{76f0ed82-c2d6-42a4-9048-94033540d1a0,
abstract = {{Emission formation and flame stability were investigated, both experimentally and computationally, for premixed combustion with varying amounts of water vapor in the mixture. Emission measurements were made in a gas turbine combustor at atmospheric conditions, using Danish Natural Gas (NG) as fuel. The emissions were mapped as a function of humidity, inlet air temperature, equivalence ratio and aerodynamic load. Operating conditions were chosen to match what can be expected from e.g. an EvGT cycle for power generation. The inlet air temperature was slightly lower than the inlet temperatures that would be found in a recuperated cycle. The degree of humidity was varied from 0w% to 33w% of the airflow in the experiment, while the air inlet temperature was varied from 500K to 800K. Computations were made using a single Perfectly Stirred Reactor (PSR) model and a reaction scheme with 821 reactions and 69 species. It was found that the NO<sub>X</sub> emissions were strongly reduced by the addition of water. Most of this decrease vanishes in practical combustion since richer combustion is required to keep CO emissions (combustion efficiency) at a tolerable level. The maximum humidity was found to be dependent on inlet air temperature and aerodynamic load. In this experiment, the maximum humidity achieved was 33%.}},
author = {{Hermann, Fredrik and Klingmann, Jens and Gabrielsson, Rolf}},
booktitle = {{American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI}},
keywords = {{Combustion efficiency; Premixed flame; Perfectly stirred reactor (PSR)}},
language = {{eng}},
pages = {{819--827}},
publisher = {{American Society Of Mechanical Engineers (ASME)}},
title = {{Computational and experimental investigation of emissions in a highly humidified premixed flame}},
volume = {{1}},
year = {{2003}},
}