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Unread 08-22-2013, 06:54 PM   #1
fattdaddy
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Default Pipe Burner Help Needed

Hello all, I have made this pipe burner for a griddle. It is made out of 1/2" pipe and the venturi was made out of a turkey fryer burner. It is just not burning quite right. It acts as if it is puffing or sucking the flames in and out and for some reason I can not get the whole burner to light, I am using the standard regulator that comes with turkey fryers. Any help would be appreciated.

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Unread 08-22-2013, 06:56 PM   #2
Yellowhair42
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Too many holes for that small of pipe.
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Unread 08-22-2013, 06:59 PM   #3
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Quote:
Originally Posted by Yellowhair42 View Post
Too many holes for that small of pipe.
^ Agree, one row of holes should be plenty.
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Unread 08-22-2013, 07:01 PM   #4
fattdaddy
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Yellowhair42

What size pipe and hole size do you suggest? Also what do you think the spacing should be between the holes.

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Unread 08-22-2013, 07:09 PM   #5
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Probably 1 1/2 inch if I had to guess.My gasser has 1 1/4 for about that size.Too bad there wasn't a formula somewhere.Size and spacing look OK.
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Unread 08-22-2013, 07:21 PM   #6
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Holey holes batman! That would be a propane hog for sure...
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Unread 08-22-2013, 07:30 PM   #7
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I agree, too many holes. Not enough gas can come out and my thinking is that it is sucking air in the other ones. I would try half the amount and start from there. Hole size seems fine.
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Unread 08-22-2013, 07:32 PM   #8
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I agree with too many/too big holes. The velocity of the gas/air mix in the holes has to be higher than the flame front speed otherwise the flame will burn back into the manifold. Once it does so, the gas in the manifold burns, increasing the velocity of the gas flowing through the orifices and pushing the flame back out. Then the cycle repeats. That's probably what is causing the puffing.

I would look at a gas grill of known BTU output and measure and count the holes. You want to provide about the same on your burner if you are hoping for the same BTU output.
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Unread 08-22-2013, 08:03 PM   #9
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Ok, thanks for all the responses! I think I will rebuild this burner this weekend using larger pipe and only one row of holes. What do ya'll think about increasing the pipe size to 3/4" and reducing the hole size just a tad?

I agree it would be nice if there was a Burner Calculator out there similar to the one for the fireboxes and smokers.

Again Thanks to all.
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Unread 08-26-2013, 04:04 PM   #10
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Quote:
Originally Posted by fattdaddy View Post
I agree it would be nice if there was a Burner Calculator out there similar to the one for the fireboxes and smokers.

Check this page out, keep in mind these are designed for Forges and Metal melting Furnaces

http://ronreil.abana.org/burnerdoc.shtml

http://ronreil.abana.org/design1.shtml

and here is a file that has some useful data in it

http://www.burnersinc.com/pipeburners/pipeburnerfaq.pdf
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