Ask for ignition skills
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Please tell me: I saw that the minimum ignition energy of hydrogen is 0.02mJ, but I don’t think it is vivid enough. Can you give an example to explain how much energy is 0.02mJ? Is it the energy generated by a nail falling on the ground? In other words, if there is hydrogen gas around, within the explosion limit, can the energy generated by a falling iron nail ignite the hydrogen gas? It would be best to have a more vivid explanation? Thank you all, please wait and thank you again!
No one has a reply. I calculated that if the iron nail falls and the potential energy is completely converted into heat energy, the heat generated should be greater than 0.02
Just calculate it like this, and you can intuitively realize how small the required ignition energy is.
According to the data, when the electrostatic voltage of the human body reaches 2000V (usually the electrostatic voltage of the human body is between 1000V and 10000V), the discharge energy between the human body and the electrostatic conductor can reach 0.4mJ.
0.02mJ is the energy of spark discharge of the charge in the capacitor. For details, please refer to the corresponding MIE test method. The energy of a needle dropped on the ground, although it can reach 0.02mJ, may not ignite hydrogen because its energy intensity may not be enough. Just like when a person jumps up, its energy is far more than 0.02mJ, but it may not ignite hydrogen.
In which standard or manual can I find the minimum ignition energy of most media?
May I ask where you can find the relevant data? Can you share some common learning?* ! Thanks