Mohammaed Salah Al Deen . on fri 29 dec 00
Dear sir
I looking for electrical kiln formula , what power can applied to kiln =
volume made of Brick or Fiber,I like to design kiln .
-can you send me that formula
-web site take about that
-research=20
-books
regard
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Michael Mandaville on mon 8 oct 01
On Fri, 29 Dec 2000 22:23:07 +0200, Mohammaed Salah Al Deen .
wrote:
>Dear sir
>
>I looking for electrical kiln formula , what power can applied to kiln
volume made of Brick or Fiber,I like to design kiln .
>-can you send me that formula
>-web site take about that
>-research
>-books
>regard
Hello, Mohammaed, and please call me Michael.
Here is a book about how to build an electric resistance furnace which
would be suitable for firing pottery:
http://www.lindsaybks.com/dgjp/djgbk/found/index.html
Voltage equals current times resistance I believe is the formula which you
are looking for.
Electric kilns need to be made of brick, rather than fiber, because the
resistance-wire heating-element needs to be able to rest in a groove which
is cut into the brick, where it will be free to expand and contract without
breaking.
Harry Fraser also has an excellent book which is entitled "The Electric
Kiln", and which has enough information in it to enable the reader to
design and build their own kiln.
Regards,
Michael Mandaville
Austin, Texas
Michael Mandaville on mon 8 oct 01
Mohammaed wrote:
>...I looking for electrical kiln formula , what power can applied to kiln
>volume made of Brick...
Sorry to answer my own post, but I finally found my "Fraser", so I can now
give a proper answer to Mohammaed's main question.
>From page 30, paragraph 2:
"Small kilns for stoneware tend to have 2.5 to 3 kW (kilowatts of power-MM)
per cubic foot dropping to about 1.5 kW per cubic foot for kilns about 10
cubic feet capacity."
I don't think I would want to design an electric kiln without having
Fraser's book. He really does seem to cover everything.
Michael Mandaville
Wayne Matthews on mon 8 oct 01
I don't know where this conclusion about fiber comes from. I have an
electric fiber kiln with groves cut in the fiber. Works just fine. I fire
earthenware to cone 04-01 and stoneware - porcelain to cone 9-10. The kiln
is 30" square and 49" tall front loader.
Wayne Matthews
Proud Tiger Pottery
Potter and Sculptor
Ojai, CA 93023
805.646.7338
on 10/8/01 2:35 AM, Michael Mandaville at MchlMndvl@AOL.COM wrote:
>
> Electric kilns need to be made of brick, rather than fiber, because the
> resistance-wire heating-element needs to be able to rest in a groove which
> is cut into the brick, where it will be free to expand and contract without
> breaking.
>
> Regards,
>
> Michael Mandaville
> Austin, Texas
Michael Mandaville on mon 8 oct 01
Hello, Wayne.
I stand corrected.
The nice thing about being corrected is that I get to learn something!
Regards,
Michael Mandaville
Austin, Texas
On Mon, 8 Oct 2001 09:06:04 -0700, Wayne Matthews wrote:
>I don't know where this conclusion about fiber comes from. I have an
>electric fiber kiln with groves cut in the fiber. Works just fine. I fire
>earthenware to cone 04-01 and stoneware - porcelain to cone 9-10. The kiln
>is 30" square and 49" tall front loader.
>
>Wayne Matthews
>Proud Tiger Pottery
>Potter and Sculptor
>Ojai, CA 93023
>805.646.7338
>
>
>
>on 10/8/01 2:35 AM, Michael Mandaville at MchlMndvl@AOL.COM wrote:
>
>>
>> Electric kilns need to be made of brick, rather than fiber, because the
>> resistance-wire heating-element needs to be able to rest in a groove
which
>> is cut into the brick, where it will be free to expand and contract
without
>> breaking.
>>
>> Regards,
>>
>> Michael Mandaville
>> Austin, Texas
John Baymore on tue 9 oct 01
Electric kilns need to be made of brick, rather than fiber, because the
resistance-wire heating-element needs to be able to rest in a groove whic=
h
is cut into the brick, where it will be free to expand and contract witho=
ut
breaking.
Michael,
Actually, electric kiln elements can be designed in many configurations. =
In Japan it is quite common to have the elements suspended by pins on fla=
t,
ungrooved walls of fiber or brick. Also element holders can be inlaid in=
to
groves in fiber boad, castable, or even blanket. For larger industrial
electric kilns you can even find elements made out of silicon carbide
material, and they are sometimes sort of free standing...... attached at
the ends but not anywhere in the middle. These looks sort of like a fuel=
fired muffle kiln.
We tend to get used to what is commonly seen.......... =
Lots of way to "skin the _______________" (fill in your favorite
item....... I would never say "cat" .)
Best,
..............................john
John Baymore
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086 USA
603-654-2752 (s)
800-900-1110 (s)
JohnBaymore.com
JBaymore@compuserve.com
John.Baymore@GSD-CO.com
"Earth, Water, and Fire Noborigama Woodfiring Workshop 2002 Dates TBA"=
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