Steven D. Lee on mon 16 sep 02
If I would like to extend the cool down time of my electric kiln but
have no computer controller and don't really want to babysit the kiln
as it is cooling by power down slowly, is there a way of introducing
heat radiating materials into the firing chamber to slow down this
cooling?
What I was thinking is using blocks of graphite as kiln shelf posts
or have some thinner ones between the ware?
***********************
Steven D. Lee
SD Pottery
www.sdpottery.com
millenial_age@yahoo.com
***********************
Ditmar on mon 16 sep 02
You have a fixed amount of heat in the firing chamber when the kiln shuts
off. You don't want a radiator. What you need is a greater mass to absorb
heat on firing and slowly release it after shut down. ( or more insulation
to slow heat loss to the outside....or both ) You actually want thicker or
more massive posts and furniture. Put some firebricks in with the firing.
Try to imagine yourself in a small tent, stuck in the Alaskan wilderness
during winter.
You're going to stay warmer overnight with a layer of insulating snow on the
outside of the tent, and curled up in a sleeping bag with a 300 lb.
girlfriend instead of a 75 lb. sled dog.
Ditmar
----- Original Message -----
From: "Steven D. Lee"
To:
Sent: Monday, September 16, 2002 3:36 AM
Subject: Heat Radiators in an Electric Kiln
> If I would like to extend the cool down time of my electric kiln but
> have no computer controller and don't really want to babysit the kiln
> as it is cooling by power down slowly, is there a way of introducing
> heat radiating materials into the firing chamber to slow down this
> cooling?
>
> What I was thinking is using blocks of graphite as kiln shelf posts
> or have some thinner ones between the ware?
>
> ***********************
> Steven D. Lee
> SD Pottery
> www.sdpottery.com
> millenial_age@yahoo.com
> ***********************
>
>
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>
vince pitelka on mon 16 sep 02
> If I would like to extend the cool down time of my electric kiln but
> have no computer controller and don't really want to babysit the kiln
> as it is cooling by power down slowly, is there a way of introducing
> heat radiating materials into the firing chamber to slow down this
> cooling?
Steven -
I have accomplished this by using hardbrick chunks as kiln furniture, and
even by including extra hardbrick in the firing. I firing complex inlaid
colored clay sculpture, I had some problems with a commercial low-fire clear
glaze coming out of the firing with bubbles in the surface. After I started
including some hardbrick, the problem disappeared.
Good luck -
- Vince
Vince Pitelka
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
http://www.craftcenter.tntech.edu/
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