Advanced

Experimental Investigation of Laminar Flame Speeds for Medium Calorific Gas with Various Amounts of Hydrogen and Carbon Monoxide Content at Gas Turbine Temperatures

Sigfrid, Ivan LU ; Whiddon, Ronald LU ; Collin, Robert LU and Klingmann, Jens LU (2010) ASME Turbo Expo 2010: Power for Land, Sea, and Air In Proceedings of the ASME Turbo Expo 2010, GT2010-22275 Volume 2: Combustion, Fuels and Emissions, Parts A and B. p.173-181
Abstract
It is expected that, in the future, gas turbines will be operated on gaseous fuels currently unutilized. The ability to predict the range of feasible fuels, and the extent to which existing turbines must be modified to accommodate these fuels, rests on the nature of these fuels in the combustion environment. Understanding the combustion behavior is aided by investigation of syngases of similar composition. As part of an ongoing project at the Lund University Departments of Thermal Power Engineering and Combustion Physics, to investigate syngases in gas turbine combustion, the laminar flame speed of five syngases (see table) have been measured. The syngases examined are of two groups. The first gas group (A), contains blends of H-2, CO and... (More)
It is expected that, in the future, gas turbines will be operated on gaseous fuels currently unutilized. The ability to predict the range of feasible fuels, and the extent to which existing turbines must be modified to accommodate these fuels, rests on the nature of these fuels in the combustion environment. Understanding the combustion behavior is aided by investigation of syngases of similar composition. As part of an ongoing project at the Lund University Departments of Thermal Power Engineering and Combustion Physics, to investigate syngases in gas turbine combustion, the laminar flame speed of five syngases (see table) have been measured. The syngases examined are of two groups. The first gas group (A), contains blends of H-2, CO and CH4, with high hydrogen content. The group A gases exhibit a maximum flame speed at an equivalence ratio of approximately 1.4, and a flame speed roughly four times that of methane. The second gas group (B) contains mixtures of CH4 and H-2 diluted with CO2. Group B gases exhibit maximum flame speed at an equivalence ratio of 1, and flame speeds about 3/4 that of methane. A long tube Bunsen-type burner was used and the conical flame was visualized by Schlieren imaging. The flame speeds were measured for a range of equivalence ratios using a constrained cone half-angle method. The equivalence ratio for measurements ranged from stable lean combustion to rich combustion for room temperature (25 degrees C) and an elevated temperature representative of a gas turbine at full load (270 degrees C). The experimental procedure was verified by methane laminar flame speed measurement; and, experimental results were compared against numerical simulations based on GRI 3.0, Hoyerman and San Diego chemical kinetic mechanisms using the DARS v2.02 combustion modeler. On examination, all measured laminar flame speeds at room temperature were higher than values predicted by the aforementioned chemical kinetic mechanisms, with the exception of group A gases, which were lower than predicted. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
hydrogen, syngas, laminar flame speed, stretch, combustion
in
Proceedings of the ASME Turbo Expo 2010, GT2010-22275
volume
Volume 2: Combustion, Fuels and Emissions, Parts A and B
pages
9 pages
publisher
American Society Of Mechanical Engineers (ASME)
conference name
ASME Turbo Expo 2010: Power for Land, Sea, and Air
external identifiers
  • WOS:000290693200018
  • Other:GT2010-22275
  • Scopus:82055205050
ISBN
978-0-7918-4397-0
DOI
10.1115/GT2010-22275
language
English
LU publication?
yes
id
db10a699-2523-4f8b-a41d-7cf85da751c8 (old id 1984581)
date added to LUP
2011-07-11 10:37:03
date last changed
2017-01-01 08:03:22
@inproceedings{db10a699-2523-4f8b-a41d-7cf85da751c8,
  abstract     = {It is expected that, in the future, gas turbines will be operated on gaseous fuels currently unutilized. The ability to predict the range of feasible fuels, and the extent to which existing turbines must be modified to accommodate these fuels, rests on the nature of these fuels in the combustion environment. Understanding the combustion behavior is aided by investigation of syngases of similar composition. As part of an ongoing project at the Lund University Departments of Thermal Power Engineering and Combustion Physics, to investigate syngases in gas turbine combustion, the laminar flame speed of five syngases (see table) have been measured. The syngases examined are of two groups. The first gas group (A), contains blends of H-2, CO and CH4, with high hydrogen content. The group A gases exhibit a maximum flame speed at an equivalence ratio of approximately 1.4, and a flame speed roughly four times that of methane. The second gas group (B) contains mixtures of CH4 and H-2 diluted with CO2. Group B gases exhibit maximum flame speed at an equivalence ratio of 1, and flame speeds about 3/4 that of methane. A long tube Bunsen-type burner was used and the conical flame was visualized by Schlieren imaging. The flame speeds were measured for a range of equivalence ratios using a constrained cone half-angle method. The equivalence ratio for measurements ranged from stable lean combustion to rich combustion for room temperature (25 degrees C) and an elevated temperature representative of a gas turbine at full load (270 degrees C). The experimental procedure was verified by methane laminar flame speed measurement; and, experimental results were compared against numerical simulations based on GRI 3.0, Hoyerman and San Diego chemical kinetic mechanisms using the DARS v2.02 combustion modeler. On examination, all measured laminar flame speeds at room temperature were higher than values predicted by the aforementioned chemical kinetic mechanisms, with the exception of group A gases, which were lower than predicted.},
  author       = {Sigfrid, Ivan and Whiddon, Ronald and Collin, Robert and Klingmann, Jens},
  booktitle    = {Proceedings of the ASME Turbo Expo 2010, GT2010-22275},
  isbn         = {978-0-7918-4397-0},
  keyword      = {hydrogen,syngas,laminar flame speed,stretch,combustion},
  language     = {eng},
  pages        = {173--181},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  title        = {Experimental Investigation of Laminar Flame Speeds for Medium Calorific Gas with Various Amounts of Hydrogen and Carbon Monoxide Content at Gas Turbine Temperatures},
  url          = {http://dx.doi.org/10.1115/GT2010-22275},
  volume       = {Volume 2: Combustion, Fuels and Emissions, Parts A and B},
  year         = {2010},
}