Earl Brunner on mon 11 jun 01
Furthermore, your idiot "plumber" has charts, tables and formulas to
figure out at a given pressure/distance, the diameter of pipe required
to do the job. If you gave him the required BTU's, he should have been
able to figure the requirements. The idiot shouldn't be doing plumbing
if he can't do the basics.
vince pitelka wrote:
>>John wrote:
>> So, anyway, what I want to do is add some BTU's and get from 018 up to
>
> cone
>
>> 6/7 without having to run another line. Since with our low pressure, I'm
>> not sure I'd get there even with a bigger pipe. I'm considering adding a
>> couple of extra burners to run off of a small propane tank or two.
>
>
> John -
> A larger pipe is exactly how you do get higher BTUs with very low pressure.
> I fired a 100-cubic foot car kiln in my studio in California, using about 9
> water column inches of natural gas. It was about a 75-foot run from the gas
> meter, and I used 2" plastic-coated black iron pipe. At the kiln I had
> about a million BTUs at my disposal. This required a very large gas meter
> and regulator, but when I told the gas company how many BTUs I needed they
> supplied the large gas meter and regulator with no questions. They are
> pleased to know that you will be using that much gas.
> Best wishes -
> - Vince
>
> Vince Pitelka
John Jensen on mon 11 jun 01
Thanks to all for the advice. I did in fact change my orifices. I think my
problem is inadequate supply of gas. Our service is very low pressure and
the run to the kiln is long. I ran 1" flexible line about 60 ft from the
meter. Surely I should have used larger line, it now seems clear. My
advice is never to trust a plumber who says something like "I guarantee
you'll be getting 200,000 BTU at the kiln with this line" (uh, is that
guarantee in writing?) No.
So, anyway, what I want to do is add some BTU's and get from 018 up to cone
6/7 without having to run another line. Since with our low pressure, I'm
not sure I'd get there even with a bigger pipe. I'm considering adding a
couple of extra burners to run off of a small propane tank or two.
John Jensen, Mudbug Pottery, Annapolis, Md.
mudbug@toad.net www.Toadhouse.com
vince pitelka on mon 11 jun 01
> So, anyway, what I want to do is add some BTU's and get from 018 up to
cone
> 6/7 without having to run another line. Since with our low pressure, I'm
> not sure I'd get there even with a bigger pipe. I'm considering adding a
> couple of extra burners to run off of a small propane tank or two.
John -
A larger pipe is exactly how you do get higher BTUs with very low pressure.
I fired a 100-cubic foot car kiln in my studio in California, using about 9
water column inches of natural gas. It was about a 75-foot run from the gas
meter, and I used 2" plastic-coated black iron pipe. At the kiln I had
about a million BTUs at my disposal. This required a very large gas meter
and regulator, but when I told the gas company how many BTUs I needed they
supplied the large gas meter and regulator with no questions. They are
pleased to know that you will be using that much gas.
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/
wrives@MINDSPRING.COM on tue 12 jun 01
I think someone aluded to this already, but do not overlook the gas meter as a possible part of the problem. When I looked into using natural instead of propane, that was one of the issues. In order to have a sufficient Volume of gas to support the Pressure I wanted, the gas company would have had to replace my meter with one designed to provide a greater volume of gas than you would normally use for a home gas connection.
Wayne
Peachtree City, GA
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