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Streamer Discharges Caused by High-Frequency Voltage Leading to Ignition of Hydrogen/Air Mixtures.

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Title: Streamer Discharges Caused by High-Frequency Voltage Leading to Ignition of Hydrogen/Air Mixtures.
Authors: Langer, T.1 Tim.Langer@ptb.de, Markus, D.1, Lienesch, F.1, Maas, U.2
Source: Combustion Science & Technology. Nov/Dec2010, Vol. 182 Issue 11/12, p1718-1734. 17p. 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 1 Chart, 8 Graphs.
Subjects: Electric potential, Hydrogen, Industrial safety, Probability theory, Electric fields
Abstract: The authors investigated the ignition process of hydrogen/air mixtures by repetitive streamer discharges due to high-frequency AC voltage in order to achieve a better comprehension in matters of safety engineering. Therefore, the dependence of ignition on the number of voltage cycles is examined. The location of the highest ignition probability is analysed. The electric field strength in the test setup is calculated to explain the obtained effect of different streamer elongation for different polarities. The streamer current is investigated. The streamer radius and length in air are determined. Considering the impact of the discharge as gas heating the minimum ignition energy density of different hydrogen/air mixtures is calculated using detailed chemical kinetics. Based on this approach, the energy deposition resulting from streamer discharges in the gas mixture is estimated. [ABSTRACT FROM AUTHOR]
Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Streamer Discharges Caused by High-Frequency Voltage Leading to Ignition of Hydrogen/Air Mixtures.
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  Data: <searchLink fieldCode="AR" term="%22Langer%2C+T%2E%22">Langer, T.</searchLink><relatesTo>1</relatesTo><i> Tim.Langer@ptb.de</i><br /><searchLink fieldCode="AR" term="%22Markus%2C+D%2E%22">Markus, D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lienesch%2C+F%2E%22">Lienesch, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Maas%2C+U%2E%22">Maas, U.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Combustion+Science+%26+Technology%22">Combustion Science & Technology</searchLink>. Nov/Dec2010, Vol. 182 Issue 11/12, p1718-1734. 17p. 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 1 Chart, 8 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Electric+potential%22">Electric potential</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen%22">Hydrogen</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+safety%22">Industrial safety</searchLink><br /><searchLink fieldCode="DE" term="%22Probability+theory%22">Probability theory</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+fields%22">Electric fields</searchLink>
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  Data: The authors investigated the ignition process of hydrogen/air mixtures by repetitive streamer discharges due to high-frequency AC voltage in order to achieve a better comprehension in matters of safety engineering. Therefore, the dependence of ignition on the number of voltage cycles is examined. The location of the highest ignition probability is analysed. The electric field strength in the test setup is calculated to explain the obtained effect of different streamer elongation for different polarities. The streamer current is investigated. The streamer radius and length in air are determined. Considering the impact of the discharge as gas heating the minimum ignition energy density of different hydrogen/air mixtures is calculated using detailed chemical kinetics. Based on this approach, the energy deposition resulting from streamer discharges in the gas mixture is estimated. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/00102202.2010.497374
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      – SubjectFull: Industrial safety
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      – TitleFull: Streamer Discharges Caused by High-Frequency Voltage Leading to Ignition of Hydrogen/Air Mixtures.
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              Text: Nov/Dec2010
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