Dave Finkelnburg on tue 14 mar 06
David,
I have used a Bailey Vent for 7 years on my
electric kiln and am extremely satisfied with it. As
with any vent, the duct does require maintenance in a
cool area where condensation can cause corrosion.
As you note, the Bailey vent is an alternative
design to the Envirovent attatched to the bottom of
the kiln. In my opinion, the Bailey design is
superior. In fact, Orton, who makes the Envirovent,
now sells a copy of the wall-mounted Bailey design
under the name VentMaster.
Wall mounted vent fans have two advantages. The
fan motor is far from the kiln heat, so they're
cooler, which extends their life. Also, vibration
from the motor and fan is at the wall, not shaking the
kiln. Over the life of the vent that vibration does
not help the brick, especially as the fan ages and
gets a little out of balance.
Whether the vent pulls from the lower wall of the
kiln or from the center of the floor is not very
critical, but I do like the center of the floor
design. Still, any vent that keeps the kiln under
negative pressure...any leakage is INTO the
kiln...keeps the room free of noxious fumes and that's
the point of the vent...to let you breathe clean air
while you're around the kiln. One could easily vent
the Bailey out the bottom by making a fitting that was
a 90-degree transition piece.
By the way, all kiln vents need to have a lot of
cooling air leaking into the suction side of the fan,
so the fan is seeing relatively cool air, not the full
heat of the kiln. Otherwise the fan and duct would
have to be made of materials good for more than
2,000°F! Just like the Bailey, the Envirovent moves
room air as well as air from the kiln out through the
duct.
Good potting,
Dave Finkelnburg
--- David Jenkins wrote:
> Has anyone used the Bailey kiln vent system?
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