Hank Murrow on mon 7 may 01
> A question for the kiln building guru's. I've just about finished
>building an envelope kiln. It is a cylinder that is 4ftx4ft (I used a
>cylinder because it was free.) I've erected a 16 ft three legged scafold
>around the pad. The cross members will serve as pick points, the kiln is
>counter-weighted. It is lined with 4 inches of fiber blanket, which I pl=
an
>to coat with ITC.The blanket on the hot face has a continuous duty ratin=
g
>of 2700F. I really need all of the heigth for taller pieces so I'm
>building a fire box beneath.
> My question is would it be better to have the burners oriented
>horizontally or vertically. Does it make a difference. If at all possibl=
e
>I would like to use natural aspiration rather than forced draft. Is it
>better to use several small burners rather than a couple big ones?
>Additionally, I'll be firing with propane, though it isn't that difficul=
t
>for me to pipe in natural gas from the house.
> The only reason I'm asking the question is because I noticed a kiln
>that had been built with the burners beneath the kiln rather than on the
>side as I was purusing Olson's book. I've used burners beneath quite
>successfully in the past on small raku kilns. My primary concern is
>efficiency and decent flame circulation. Thankyou
>Craig Dunn Clark
Dear Craig;
I reccommend that you arrange the burners to fire in from a position
tangent to the circle of the shell. Additionally, it would be very good t=
o
have them fire in under the first level of the setting. You can get a
spiral effect this way, which is a good thing.
Hank
craig clark on mon 7 may 01
A question for the kiln building guru's. I've just about finished =
building an envelope kiln. It is a cylinder that is 4ftx4ft (I used a =
cylinder because it was free.) I've erected a 16 ft three legged scafold =
around the pad. The cross members will serve as pick points, the kiln is =
counter-weighted. It is lined with 4 inches of fiber blanket, which I =
plan to coat with ITC.The blanket on the hot face has a continuous duty =
rating of 2700F. I really need all of the heigth for taller pieces so =
I'm building a fire box beneath.
My question is would it be better to have the burners oriented =
horizontally or vertically. Does it make a difference. If at all =
possible I would like to use natural aspiration rather than forced =
draft. Is it better to use several small burners rather than a couple =
big ones? Additionally, I'll be firing with propane, though it isn't =
that difficult for me to pipe in natural gas from the house.
The only reason I'm asking the question is because I noticed a kiln =
that had been built with the burners beneath the kiln rather than on the =
side as I was purusing Olson's book. I've used burners beneath quite =
successfully in the past on small raku kilns. My primary concern is =
efficiency and decent flame circulation. Thankyou
Craig Dunn Clark
619 East 11 1/2 st
Houston, Texas 77008
(713)861-2083
mudman@hal-pc.org
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