Susan Fox-Hirschmann on thu 24 jan 02
Brad,
how many cubic feet is your kiln? fiber or brick?
just curious.
thanks for the explanation.....kinda like to know what i am getting into.
GAs firing...exciting times, i am sure!
susan fox hirschmann
>From: "Brad S. Reitz"
>Reply-To: Ceramic Arts Discussion List
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Geil Gas Use
>Date: Thu, 24 Jan 2002 10:59:27 -0800
>
>Susan and Joyce,
>
>My figures agree with Earl. Somewhere around $8 a firing is what I
>fugured recently. The kilns are marked with how many BTU's an hour they
>burn, however, you have to factor in that you're not going full speed all
>the way. Our gas is priced in therms, which I believe is equal to
>1,000,000 BTUs. Evidently, differing grades of gas will provide more or
>less BTUs so the therm is a way to have consistent pricing.
>
>Joyce, you don't sound at all casual about firing. My experience has been
>that it has been easy to get consistent results. To tell you how bad I am,
>I inch my way up to 1300 degrees, turn up the burners with reduction set,
>and go to bed for a few hours. I know the kiln will stall at around 2100
>degrees. I then get up, open the damper, and finish off. I must say,
>though, I tend to sleep lightly when I do this! One night, the sound of
>fire trucks had me flying outside from a dead sleep, although everything
>was fine!
>
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Brad S. Reitz on thu 24 jan 02
Susan and Joyce,
My figures agree with Earl. Somewhere around $8 a firing is what I
fugured recently. The kilns are marked with how many BTU's an hour they
burn, however, you have to factor in that you're not going full speed all
the way. Our gas is priced in therms, which I believe is equal to
1,000,000 BTUs. Evidently, differing grades of gas will provide more or
less BTUs so the therm is a way to have consistent pricing.
Joyce, you don't sound at all casual about firing. My experience has been
that it has been easy to get consistent results. To tell you how bad I am,
I inch my way up to 1300 degrees, turn up the burners with reduction set,
and go to bed for a few hours. I know the kiln will stall at around 2100
degrees. I then get up, open the damper, and finish off. I must say,
though, I tend to sleep lightly when I do this! One night, the sound of
fire trucks had me flying outside from a dead sleep, although everything
was fine!
Roger Korn on thu 24 jan 02
Hi All,
A therm is 100,000 BTUs. The gas company reads the meter in cubic feet, then
applies a "power factor" to convert to therms, depending on how much energy per
cubic foot the gas yields when burned. The variables are chiefly water vapor and
sulfur dioxide.
Roger
"Brad S. Reitz" wrote:
> Susan and Joyce,
> ... Our gas is priced in therms, which I believe is equal to
> 1,000,000 BTUs. Evidently, differing grades of gas will provide more or
> less BTUs so the therm is a way to have consistent pricing.
>
> ...______________________________________________________________________________
>
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
--
Roger Korn
McKay Creek Ceramics
In AZ: PO Box 463
4215 Culpepper Ranch Rd
Rimrock, AZ 86335
928-567-5699 <-
In OR: PO Box 436
31330 NW Pacific Ave.
North Plains, OR 97133
503-647-5464
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