Abstract
In this work, we report the ignition potential between an earthed
spherical metal electrode and a charged insulating plate in hydrogen-air
mixture. The test results indicate that it is very difficult to generate
brush discharge when the surface potential of the plate center is
less than -10 kV. And it is very difficult to ignite the hydrogen-air
mixture when the surface potential of the plate center is less than
-20 kV. The ignition can be generated when the range of the hydrogen
concentration is 20-25%.
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