[TheForge] eco coke

[peter fels]

The danger isn't a gradual build up of pressure probably,
Rather it's if the " brown smoke" of volatiles gets just enough oxy and flashes.
A friend , Al( RIP) was firing a VW sized pottery kiln, years ago. He was using drain oil as fuel,
and had a modest little fire going, "candling" the kiln all night.
When he turned on the blowers, there was a brief puff of heavy brown smoke, a heavy whumph!
and the kiln went flying in all directions.
Some of the bricks flew over 100 feet and Al's full beard, eyebrows and hair evaporated.
I was about 70' away and we did some hasty fire control while Al went straight to his water tank.
He was face down in the water, coming up only for breath, for a couple of hours.
No lasting damage to Al, except his craftsman's pride.

On May 25, 2011, at 7:47 PM, Saint Phlip wrote:

>> From what the video said, the tanks aren't closed in the sense you're
> talking. The weight of the internal barrel is all that holds it down.
> If the internal pressure increases, it escapes under the edges of the
> internal barrel. Using pressure cookers as  a comparison, that's a
> very light weight (comparatively) so you wouldn't be building up more
> than about 10 or 20 lbs of pressure (depending on the weight of the
> barrel). And, the relief "valve" isn't a  teensy little thing as on a
> pressure cooker. The relief valve would be the entire circumference of
> the internal barrel, which means you don't have a lot of pressure in a
> small area, but rather evenly distributed pressure across a large
> area. It's just sufficient closure to prevent inflow of air, not out
> flow, given that you're dealing with positive [pressure.
> 
> 
> On Wed, May 25, 2011 at 7:50 PM, peter fels <artgawk at thegrid.net> wrote:
>> A word of caution;
>> Colliers regularly were killed by explosions while making charcoal.
>> A closed container full of fuel, heated...ought to spook one some.
>> 
>> On May 25, 2011, at 4:43 PM, Mike Spencer wrote:
>> 
>>> 
>>> Bruce wrote:
>>> 
>>>> I'd like to see plans for the thing, because I didn't get from the
>>>> video where the air enters.
>>> 
>>> IIRC, there's one barrel inverted inside a larger barrel, right?  Fuel
>>> in the space between.  Air holes at/near the bottom of the outer
>>> barrel so the annular space serves as a firebox and the thing stuck on
>>> top is a flue that helps create some up-draught.
>>> 
>>> No opening in the bottom (which is up) of the inner barrel so active
>>> burning doesn't propagate there.
>>> 
>>> 
>>> --
>>> Michael Spencer                  Nova Scotia, Canada       .~.
>>>                                                           /V\
>>> mspencer at tallships.ca                                     /( )\
>>> http://home.tallships.ca/mspencer/                        ^^-^^
>>> 
>>> ______________________________________________________________
>>> TheForge mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/theforge
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:TheForge at mailman.qth.net
>>> 
>>> TheForge mail list group photo site is
>>> http://www.photoworks.com
>>> Login: blacksmithblacksmith at hotmail.com
>>> Password: anvil
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>> 
>> ______________________________________________________________
>> TheForge mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/theforge
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:TheForge at mailman.qth.net
>> 
>> TheForge mail list group photo site is
>> http://www.photoworks.com
>> Login: blacksmithblacksmith at hotmail.com
>> Password: anvil
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> 
> 
> 
> 
> -- 
> Saint Phlip
> 
> So, you think your data is safe?
> http://www.cnn.com/2010/OPINION/01/23/schneier.google.hacking/index.html?hpt=T2
> 
> Heat it up
> Hit it hard
> Repent as necessary.
> 
> Priorities:
> 
> It's the smith who makes the tools, not the tools which make the smith.
> 
> .I never wanted to see anybody die, but there are a few obituary
> notices I have read with pleasure. -Clarence Darrow
> ______________________________________________________________
> TheForge mailing list
> Home: http://mailman.qth.net/mailman/listinfo/theforge
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:TheForge at mailman.qth.net
> 
> TheForge mail list group photo site is
> http://www.photoworks.com
> Login: blacksmithblacksmith at hotmail.com
> Password: anvil
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html