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Started By
Message
re: Natural Gas Crawfish Burner - Info and Build
Posted on 4/24/23 at 6:59 pm to LSUtigerME
Posted on 4/24/23 at 6:59 pm to LSUtigerME
That’s damn impressive work.
0
Posted on 4/24/23 at 8:16 pm to DVinBR
Yes. You would want to cut a hole in the pot and weld the heat sink into the hole so that you don't have a gab between the flat surface of the heat sink and the pot. I bought a heat sink for this but never tried it out. My thought was that I would probably melt the fins off the heat sink if it didn't cunduct the heat quickly enough into the water. Heat sinks are usually made to be pretty thick. They might work really well though, especially for lower btu burners that won't melt the long fins.
Another concept is the rocket pot that puts nubs on the bottom of the pot to increase the surface area. What I've seen stated about them leads me to believe that the increase in efficiency range only gets the pot into the low 20% efficiency range.
The following is a pot on the market that claims to boil 15 gallons of water in 7 minutes using 375,000 BTU/hr's worth of jet burners. I'm doubtful that they get the efficiency that they imply but they don't really post enough information to know what their efficiency is.
LINK
I make crawfish boilers as a hobby. I'll try that heat sink out one of these days.
Another concept is the rocket pot that puts nubs on the bottom of the pot to increase the surface area. What I've seen stated about them leads me to believe that the increase in efficiency range only gets the pot into the low 20% efficiency range.
The following is a pot on the market that claims to boil 15 gallons of water in 7 minutes using 375,000 BTU/hr's worth of jet burners. I'm doubtful that they get the efficiency that they imply but they don't really post enough information to know what their efficiency is.
LINK
I make crawfish boilers as a hobby. I'll try that heat sink out one of these days.
This post was edited on 4/25/23 at 7:44 am
Posted on 4/25/23 at 6:39 pm to BiggerBear
How much you sell them for? Looking for a natural gas set up
Posted on 4/26/23 at 7:43 am to shoelessjoe
I couldn’t help but notice your username. Did your ME design class make these in college as well? That was one of my favorite classes.
Posted on 4/26/23 at 5:13 pm to LSUtigerME
I made one that I modified from a cheap burner. I need to make me another one.
Posted on 4/26/23 at 9:46 pm to bigbuckdj
quote:
I couldn’t help but notice your username. Did your ME design class make these in college as well? That was one of my favorite classes.
Nah, graduated in ‘08 and don’t remember anybody making them. Would be a pretty cool simple project for the shop/manufacturing class though.
Posted on 4/27/23 at 11:07 pm to BiggerBear
Hey BiggerBear, do you mind an email convo? Got a few questions for you.
genejr at bayou dOt net
TIA!
genejr at bayou dOt net
TIA!
Posted on 3/7/24 at 8:12 am to LSUtigerME
Very clean fabricating! Did you just run the hose straight to the burner with just a shut off valve? No regulator I assume.
Posted on 3/7/24 at 3:13 pm to lsuson
Boiling crawfish this year with that rig is more than a subtle brag!
Posted on 3/7/24 at 7:38 pm to sosaysmorvant
Great job! Now can you make crawfish .97/lb?
Posted on 3/8/24 at 12:31 pm to lsuson
No regulator needed if you're on a regular gas line. If you had a high pressure regulator installed (for a home generator) then you would likely have to regulate it down at the burner for it to work properly.
Posted on 5/2/24 at 4:03 pm to LSUtigerME
What pipe sealant did you use? Worried about a paste melting. Figured teflon won’t hold up
Posted on 5/2/24 at 4:08 pm to lsuson
Following for comment
Posted on 5/2/24 at 5:07 pm to LSUtigerME
How tall is your burner stand? And length and or width? Looks great. I bought a burner like yours two years ago and haven’t built a stand yet. You have a great design.
Posted on 5/2/24 at 5:16 pm to Sloughdog
You can take an exiting stand. Remove the burner. Add metal walls and run the burner about 8-10” below where the pot will sit
Posted on 5/2/24 at 5:39 pm to lsuson
quote:
What pipe sealant did you use? Worried about a paste melting. Figured teflon won’t hold up
I don’t recall exactly, but it wasn’t a special high temperature sealant. Just a readily available NG compatible product. They do have high temp ones but I did not feel it was warranted.
It’s very low pressure, so it’s not really much of a risk. Also, the piping does not get very hot, at least outside of the shield. The nipple to burner connection is the only one that would be warm, but if it leaks it’s already within the burner area and wouldn’t really have much effect.
quote:
How tall is your burner stand? And length and or width? Looks great. I bought a burner like yours two years ago and haven’t built a stand yet. You have a great design.
I honestly don’t remember exact dimensions but it’s about 16” x 16” and roughly 15” tall overall.
Posted on 5/2/24 at 5:43 pm to LSUtigerME
Thanks. 400 degrees will do
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