louroess2210 on sun 29 jan 06
I'm firing my L&L electric kiln to cone 6 today. I programmed =
it to =20
go to 2199=BAF with a 20 minute hold, then fire down at 150=BAF per hour =
=20
until 1500=BA, then shut off. When it started into the "hold' cycle, I =20=
shut off the vent, which had been on up until then.
My reasoning was that the kiln would stay hotter without the =
vent =20
and wouldn't require so much energy to keep it at top temperature or =20
to slow the cooling.
Is there any reason to leave the vent running during hold and =
cool =20
down?
I'd appreciate any input on this. (Mr. Howard?)
Thanks, Lou in Colorado=
John Hesselberth on mon 30 jan 06
On Jan 29, 2006, at 8:13 PM, louroess2210 wrote:
> I'm firing my L&L electric kiln to cone 6 today. I =20
> programmed it to go to 2199=BAF with a 20 minute hold, then fire down =20=
> at 150=BAF per hour until 1500=BA, then shut off. When it started =
into =20
> the "hold' cycle, I shut off the vent, which had been on up until =20
> then.
> My reasoning was that the kiln would stay hotter without the =20=
> vent and wouldn't require so much energy to keep it at top =20
> temperature or to slow the cooling.
> Is there any reason to leave the vent running during hold =20
> and cool down?
> I'd appreciate any input on this. (Mr. Howard?)
> Thanks, Lou in Colorado
Hi Lou,
I think it depends on what type of kiln vent you have. If it is =20
mounted on the wall away from the kiln, like most L&L vents are, it =20
is probably fine to turn it off as you start to cool. Whatever fumes =20
are going to be emitted will have been on the way up. But if it is =20
the type of vent where the blower is mounted underneath the kiln I =20
would leave it on. Otherwise, it may overheat and you may shorten the =20=
life of the fan motor. I don't like that "under the kiln" design of =20
kiln vent for this and other reasons which I have explained before in =20=
other posts. The wall mounted type is clearly superior in my opinion.
Regards,
John=
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