Ignition of Methane-Air Mixtures by Isothermal Hot Wires.
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- KIM Hyungman
- Department of Aeronautics and Astronautics, Faculty of Engineering, The University of Tokyo
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- ENOMOTO Hiroshi
- Department of Aeronautics and Astronautics, Faculty of Engineering, The University of Tokyo
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- KATO Hideki
- Department of Aeronautics and Astronautics, Faculty of Engineering, The University of Tokyo
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- TSUE Mitsuhiro
- Department of Aeronautics and Astronautics, Faculty of Engineering, The University of Tokyo
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- KONO Michikata
- Department of Aeronautics and Astronautics, Faculty of Engineering, The University of Tokyo
Bibliographic Information
- Other Title
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- 定温度熱線によるメタン‐空気予混合気の点火
- テイ オンド ネッセン ニヨル メタン クウキ ヨ コンゴウキ ノ テンカ
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Abstract
Hot surface ignition of methane-air mixtures has been experimentally studied in normal gravity and microgravity. The primary aim of this research is to explain the effects of natural convection and catalytic reaction on the hot surface ignition in a closed vessel. The hot surfaces used are platinum wire for catalyst and nickel wire for non-catalyst. In order to define the initial condition and make the analysis simple, the following control unit was developed; which heats the wire to the setting temperature in a very short time, and maintains the wire temperature constant until ignition. From experimental results, ignition temperatures with platinum wire are higher than those with nickel wire by the catalytic inhibition of ignition due to the reactant depletion on the surface of the wire. Ignition temperatures with platinum wire are highest near the stoichiometric mixture ratio and decrease with equivalence ratio depart from stoichiometric mixture ratio, while those with nickel wire increase with equivalence ratio. Ignition temperatures in normal gravity are higher than those in microgravity. Natural convection supplies reactants to the platinum wire surface, and therefore reactants are consumed because of promoting catalytic reaction in normal gravity.
Journal
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- Journal of the Japan Institute of Energy
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Journal of the Japan Institute of Energy 76 (5), 412-420, 1997
The Japan Institute of Energy
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Details 詳細情報について
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- CRID
- 1390001204356970368
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- NII Article ID
- 130004017331
- 10002068604
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- NII Book ID
- AN10373883
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- ISSN
- 18826121
- 09168753
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- NDL BIB ID
- 4228147
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed