[ExI] dark confession time

[Keith Henson]

On Sat, Mar 9, 2024 at 7:02 PM <spike at rainier66.com> wrote:

snip

> Keith I heard of the propane incident.  It is compelling.  I haven't done the calculations, but it kinda feels like by the time the flame started, the reaction would be fuel rich.

For a typical mine shaft, around 200 feet is enough air.  I worked
this out, but it's been a long time and my memory may not be accurate.
The shaft we used was 800 feet to water and I have no idea of how many
side drifts.

>  But I don't know.  It would be cool to work with it, see if we could find a way to mix the fuel and air close to the stoichiometric ratio before igniting, but I don't know how to do that.

Propane is much heavier than air, so it would fall and mix.

Keith

> spike
>