[Gasification] 300 Megawatt Power Plant and underground coal fires

[Anand Karve]

On Wed, Feb 16, 2011 at 6:08 AM, Thomas Reed <tombreed2010 at gmail.com> wrote:

>
> Dear Kevin and all...
>
> the "underground coal fire " is really a continuation of the coal making
> process, and not a fire at all, since there is no way to get oxygen
> underground.
>

Dear All,
 Burning coal breaths, if it is kept in a container having a loosely fitting
lid. One can test it in a tin can with a lid, which has not been sealed on
the can. Put a small quantity of burning coal into the can and close the
lid. The heat of the burning coal causes the air inside the can to
expand, causing a part of the air inside the can to be expelled. The reduced
supply of oxygen causes the fire intensity to be lowered, resulting into
cooling. The air inside the can contracts, drawing external air into the
can. With the supply of fresh oxygen, the fire intensity goes up, driving
the air inside the can to be expelled. This process of alternate heating and
cooling goes on until all the coal has burned itself out. One can imagine a
similar process taking place in an abandoned mine, or in a natural coal seam
with a relatively porous stratum covering it.
Yours
A.D.Karve
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