Lower Explosive Limit (LEL)
Wow, been slow here lately. Anyways, I have a question regarding LEL's. So first lets look at the composition of normal breathing air.
78% Nitrogen and 21% Oxygen. Now let's say we have a space that contains methane at a 100% of its LEL or 5% by volume. Would the methane just displace the O2 or would it also displace the N2? What I am unclear about is, would the 5% methane just displace the O2, and our Gas indicator would read 5% less O2 or 15% O2?
If yes, why would the methane not displace N2 as well?