Extremely weak hydrogen flames

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Combustion and Flame

DOI:https://doi.org/10.1016/J.COMBUSTFLAME.2010.07.024· OSTI ID:21379826

Lecoustre, V R; Sunderland, P B ^[1]; Chao, B H ^[2]; Axelbaum, R L ^[3]

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1. Department of Fire Protection Engineering, University of Maryland, College Park, MD 20742 (United States)
2. Department of Mechanical Engineering, University of Hawaii, Honolulu, HI 96822 (United States)
3. Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130 (United States)

Hydrogen jet diffusion flames were observed near their quenching limits. These involved downward laminar flow of hydrogen from a stainless steel hypodermic tube with an inside diameter of 0.15 mm. Near their quenching limits these flames had hydrogen flow rates of 3.9 and 2.1 {mu}g/s in air and oxygen, respectively. Assuming complete combustion, the associated heat release rates are 0.46 and 0.25 W. To the authors' knowledge, these are the weakest self-sustaining steady flames ever observed. (author)

• OSTI ID: 21379826
• Journal Information: Combustion and Flame, Vol. 157, Issue 11; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
HYDROGEN
FLAMES
AIR
COMBUSTION
OXYGEN
LAMINAR FLOW
COMBUSTION PROPERTIES
FLOW RATE
DIFFUSION
JETS
TUBES
Microcombustors
Microflames
Quenching limits