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Lower explosvie limit

  1. May 13, 2008 #1
    Can the lower explosive limit (LEL) be calculated for a gas composition if you have each components LEL but not the mixtures LEL? Or does this need to be determined experementially?
  2. jcsd
  3. May 14, 2008 #2


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    Good bloody question.

    I don't know.

    Easy answer would be to determine experimentally. I would imagine the difficult answer involves looking at the part pressures of each individual component gas in the mixture to give you an air/fuel ratio for each component, and assuming that the component with the lowest LEL will ignite the rest (though reaction kinetics being complicated as they are, I doubt this would be correct!).

    I don't know. Perhaps asking a mod nicely to move this to the chemistry house would be more useful?
  4. May 15, 2008 #3


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    Section 2.3 of this report and references therein.
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