Steve Mills on sat 25 jun 11
Gary, my last production gas kiln was in a basement, and I had to have a ve=
r=3D
y tall stack outside to clear the roof line. So to solve the potential exce=
s=3D
s draught problem, I routinely removed six full bricks from the base of it.=
T=3D
his slowed the chimney gasses right down giving me perfect auto-controlling=
r=3D
eduction and non-destructive exiting gas speed.=3D20
Win win!
Steve M
Steve Mills
Bath
UK
www.mudslinger.me.uk
Sent from my Ipod touch
On 25 Jun 2011, at 02:30, gary navarre wrote=
:=3D
> That's what I was wondering about Steve, by intuition I put 4 soap sized =
h=3D
oles up the stack but so far only used the one above the active damper for =
t=3D
hat afterburner effect and the lowest one below the active damper to see co=
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es placed at the exit flue. My feeling is the draft is increased by adding =
t=3D
hat air instead of cooling and slowing. Maybe opening the lower one would c=
o=3D
ol the stack below the active damper thereby slowing the draft. I haven't d=
o=3D
ne that yet.
>=3D20
> Gary Navarre
> Navarre Pottery
> Navarre Enterprises
> Norway, Michigan, USA
> http://www.NavarrePottery.etsy.com
> http://www.youtube.com/GindaUP
> http://public.fotki.com/GindaUP/
>=3D20
>=3D20
> --- On Fri, 6/24/11, Steve Mills wrote:
>=3D20
>> From: Steve Mills
>> Subject: Re: [Clayart] kiln chimneys etc
>> To: Clayart@LSV.CERAMICS.ORG
>> Date: Friday, June 24, 2011, 4:14 AM
>> For many years I've used Fred Olsen's
>> calculations as my guide on Flue/Stack proportions, but more
>> recently have opted for taller stacks with a large-ish
>> chamber at the base with several passive dampers. The idea
>> being to promote an "after-burner" effect by allowing some
>> (controlled) air in at the bottom to burn off the excess
>> unburnt gasses. This decreases the amount of visible smoke
>> from the stack exit, if you like a "visual clean-up".=3D20
>> This works pretty well in practice, with no detriment to
>> the actual firing.=3D20
>>=3D20
>> Steve M
>>=3D20
>>=3D20
>> Steve Mills
>> Bath
>> UK
>> www.mudslinger.me.uk
>> Sent from my Ipod touch
>>=3D20
>> On 21 Jun 2011, at 21:16, Bill Merrill
>> wrote:
>>=3D20
>>> There is a lot mentioned about chimney height during
>> conversations on
>>> clay art. =3D20
>>=3D20
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