iandol on sun 30 sep 01
Rather surprising that the Physicists among you have not pounced on this =
one as they did when I suggested that hot air rises or floats.
So in the absence of profession opinion, here are my thoughts.
There must be a direct relationship which each kiln has with barometric =
pressure which relates to the velocity of the draw and the damper =
setting. For any given set of circumstances ( kiln configuration, stack =
height, ware density and placement, volume, hearth or burner type, =
damper setting etc) the higher the barometric pressure the greater the =
the velocity of the gas up the stack. Electric kilns excepted.
The other point, which has been discussed before, relates kiln heating =
to geographic elevation. I think in this case, barometric pressure is =
inversely proportional to the height of the country where the kiln is =
located. So taller stacks may be needed to achieve greater fuel =
efficiency.
Best regards,
Ivor Lewis. Redhill, South Australia.
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