Effect of fuel composition on jet flames in a heated and diluted oxidant stream

Paul R. Medwell; Bassam B. Dally

doi:10.1016/j.combustflame.2012.04.012

Effect of fuel composition on jet flames in a heated and diluted oxidant stream

Paul R. Medwell, Bassam B. Dally

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

The role of hydrogen addition on the structure of the Moderate or Intense Low oxygen Dilution (MILD) combustion regime is examined using a combination of experimental techniques and laminar flame calculations. Laser diagnostic imaging is used to simultaneously reveal the in situ distribution of the hydroxyl radical (OH), formaldehyde (H 2CO), and temperature using the Jet in Hot Coflow (JHC) burner. The fuels considered are natural gas, ethylene, and LPG (each diluted with hydrogen 1:1 by volume). Hydrogen addition to the primary fuel was found necessary to stabilise the flames. Further to the role of hydrogen in the stabilisation of the flames, hydrogen addition also leads to the reaction zone exhibiting similar structure for different primary fuel types. The independence of the reaction zone structure with hydrogen addition suggests that a wide variety of fuels may be usable for achieving MILD combustion. © 2012 The Combustion Institute.

Original language	English (US)
Pages (from-to)	3138-3145
Number of pages	8
Journal	Combustion and Flame
Volume	159
Issue number	10
DOIs	https://doi.org/10.1016/j.combustflame.2012.04.012
State	Published - Oct 1 2012
Externally published	Yes

ASJC Scopus subject areas

Energy Engineering and Power Technology
General Physics and Astronomy
General Chemical Engineering
General Chemistry
Fuel Technology

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10.1016/j.combustflame.2012.04.012

Cite this

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title = "Effect of fuel composition on jet flames in a heated and diluted oxidant stream",

abstract = "The role of hydrogen addition on the structure of the Moderate or Intense Low oxygen Dilution (MILD) combustion regime is examined using a combination of experimental techniques and laminar flame calculations. Laser diagnostic imaging is used to simultaneously reveal the in situ distribution of the hydroxyl radical (OH), formaldehyde (H 2CO), and temperature using the Jet in Hot Coflow (JHC) burner. The fuels considered are natural gas, ethylene, and LPG (each diluted with hydrogen 1:1 by volume). Hydrogen addition to the primary fuel was found necessary to stabilise the flames. Further to the role of hydrogen in the stabilisation of the flames, hydrogen addition also leads to the reaction zone exhibiting similar structure for different primary fuel types. The independence of the reaction zone structure with hydrogen addition suggests that a wide variety of fuels may be usable for achieving MILD combustion. {\textcopyright} 2012 The Combustion Institute.",

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AU - Medwell, Paul R.

AU - Dally, Bassam B.

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AB - The role of hydrogen addition on the structure of the Moderate or Intense Low oxygen Dilution (MILD) combustion regime is examined using a combination of experimental techniques and laminar flame calculations. Laser diagnostic imaging is used to simultaneously reveal the in situ distribution of the hydroxyl radical (OH), formaldehyde (H 2CO), and temperature using the Jet in Hot Coflow (JHC) burner. The fuels considered are natural gas, ethylene, and LPG (each diluted with hydrogen 1:1 by volume). Hydrogen addition to the primary fuel was found necessary to stabilise the flames. Further to the role of hydrogen in the stabilisation of the flames, hydrogen addition also leads to the reaction zone exhibiting similar structure for different primary fuel types. The independence of the reaction zone structure with hydrogen addition suggests that a wide variety of fuels may be usable for achieving MILD combustion. © 2012 The Combustion Institute.

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DO - 10.1016/j.combustflame.2012.04.012

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EP - 3145

JO - Combustion and Flame

JF - Combustion and Flame

IS - 10

ER -

Effect of fuel composition on jet flames in a heated and diluted oxidant stream

Abstract

ASJC Scopus subject areas

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