STVC on sat 17 feb 01
Has anybody out there devised ways to make secondary use of kiln heat? I'm
very interested in putting some kind of system in to "recycle" heat
exhausted from kilns. So much energy wasted... There's got to be ways to
use it.
Steven Van Cleave
Vista, CA
vince pitelka on sun 18 feb 01
> Has anybody out there devised ways to make secondary use of kiln heat?
I'm
> very interested in putting some kind of system in to "recycle" heat
> exhausted from kilns. So much energy wasted... There's got to be ways to
> use it.
Steve -
As I remember, OSAC (Oregon School of Art and Craft) put in such a heat
reclamation system on the kiln exhausts. I do not know how well it worked
out. There has also been some articles in Ceramics Monthly or Studio Potter
about studio kiln heat exchangers. The problem is of course making
high-temperature heat exchanger components which guarantee that no kiln
exhaust fumes will get into your room air.
Let us know what you find out about this.
Best wishes -
- 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/
Louis Katz on sun 18 feb 01
The first is to build a multichamber kiln.
Second might be to build the thing in a space adjacent to your home, studio etc,
and use the heat from the kiln to heat your home/studio.
I did a small project on this at the University of Michigan in 1975 where I
designed a house for a community of potters and built into the house/studio a kiln
with some heat storage surrounding it. The plan was to store ware in the summer
and fire in the winter so the heat would be used. There was still so much spare
heat that it had to be vented. I no longer have the data. It was lost along with a
bunch of stuff, most of my slides, in the flood in Kansas City in the late 70's.
Preheating primary air for the kiln using the waste heat is a great as an idea but
I doubt that it really is economical on the small studio potter scale. There was
an article somewhere about 10-20 years ago, Studio Potter or Ceramics monthly, on
building a heat exchanger for a studio kiln.
Louis
> Has anybody out there devised ways to make secondary use of kiln heat?
Terrance Lazaroff on sun 18 feb 01
>Has anybody out there devised ways to make secondary use of kiln heat? I'm
>very interested in putting some kind of system in to "recycle" heat
>exhausted from kilns. So much energy wasted... There's got to be ways to
>use it.
>
>Steven Van Cleave
I don't know if you are talking electric or gas kilns. I believe Ceramics
Monthly ran an article a few years back about recycling heat from a gas kiln
back into the system to save on fuel.
Other than that I would suggest you think air exchanger. You should not use
the exhaust directly but you could possible rig up some kind of an exchanger
using a box around your exhaust ducts.
Food for thought
Terrance
L. P. Skeen on sun 18 feb 01
> > Has anybody out there devised ways to make secondary use of kiln heat?
Steve,
I currently fire in my garage, which is where the studio is located. Said
studio is cold in winter. I fire w the garage door open, then when the
firing is complete, I shut the garage door to keep the heat in. This does a
good job of pre-heating the studio for me to work, especially after the lid
gets cracked. :)
L
David Jenkins on mon 19 feb 01
The STUDIO POTTER BOOK published in 1978 has an article by John Glick entitles "Some Proposals concerning the use of waste heat" This has some great suggestions for heat exchangers and ways of storing and transferring heat. The one I have always wanted to try is running a copper coil over top of the kiln and running water through it to provide hot water heat. Our kiln takes 12 hours to fire and if I don't crack it the heat will stay in there for 48 hours. That's 6o hours of water heating capability which is not inconsequential.
This article also appeared in one of the very early issues of Studio Potter. The book is well worth having although I am sure it would be hard to find now. It is a collection of the best articles from Studio Potter from the first few years.
David Jenkins
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David Jenkins on mon 19 feb 01
Should have done this before I sent the last post. Just called Gerry Williams at Studio Potter in Goffstown N.H. 603/774-3582 and he said that they do have "very few" of the Studio Potter books left. This has the article by John Glick on recycling waste heat. It also has the article by Ron Propst on flameware. In view of the warnings about flameware from Vince and others I am only passing this along as a source of information not an endorsement.
The book is a great collection of articles from the first 5 years of Studio Potter magazine.
David Jenkins
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