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Caution with Propane Burners

Submitted by: Rob on September 12th, 2002

After kicking out 150,000+ BTUs for more than an hour, an outdoor propane burner can get very hot. Take caution when standing near these things while trying to stir your kettle. Especially be careful when you're throwing a stick for the dog and take a step back trying to get some real distance on the stick -- you might just step back and plant your leg right up against that hot burner and get a nasty 2nd degree burn.

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Re: Caution with Propane Burners Oct 9th 2002, 07:49 pm
Of course, that's never happened to you, right, Rob? :)
Comment by: DConn reply to comment
Re: Caution with Propane Burners Nov 28th 2002, 04:10 am
Not just the burners. People don't understand how dangerous a propane tank connected to anything. I seem to remember a number like 300 people killed a year in accidents with equipment (BBQ's, etc) connected to propane tanks.

I have scars on my legs, my uncle had to have plastic facial surgery, and my older brother can still barely walk from an event in 1997 when we were using a propane BBQ and the tank/hose fitting blew and gave all three of us a quick blast at 1,500 degrees.
Comment by: Greg reply to comment
Re: Caution with Propane Burners Dec 19th 2002, 08:59 pm
Singed leg hair here :) Can never be too careful. When brewing, it has to be the top of your priority list!
Comment by: daftpunk reply to comment
Re: Caution with Propane Burners Mar 30th 2003, 05:33 am
No sense showing up on the "darwin awards" while homebrewing...
Comment by: milesae reply to comment
Re: Caution with Propane Burners May 31st 2003, 02:23 pm
Don't forget the kettle itself. I have grabbed the petcock lever on my kettle while it was heating up (not boiling yet), and ended up with a nice burn on my fingers. Not drastic, but not very comfortable while brewing for the next few hours. I now assume that anything on the burner is hot, even if it hasn't been fired yet.
Comment by: BrownDog reply to comment
Re: Caution with Propane Burners Oct 9th 2003, 04:16 am
Just because the boiler's empty, doesn't mean it's cool either, those keg boilers hold the heat quite nicely. Found out the hard way, have a nice set of leather gloves now, for when I have to move it about.
Comment by: Lagerman64 reply to comment
Re: Caution with Propane Burners Jul 15th 2004, 02:45 pm
Also make sure your dog is far away as the burner is going to town. We accidentaly set a dog on fire one time. My buddy had an interesting time explaining that to the girlfriend.
Comment by: joe reply to comment
Re: Caution with Propane Burners Apr 7th 2005, 11:40 am
just a quite simple question : how can we define the size and power of the burner we need ? I'm installing a micro-pico-small-brewery and i cannot find it... when looking at the shops sites, they say some quite different stuffs :
on one website : this burner is ok for 50 gallons, and the same product on another website will say : 10 gallons... Do you know if there is a way to calculate?

Greg.
Comment by: gregmurer reply to comment
Re: Caution with Propane Burners Apr 13th 2005, 12:47 am
This may help - then again it may not.

Since 1 BTU is equal to 252 calories.
1 BTU will raise 252 grams of water 1 degree centigrade OR 1 gram of water 252 degrees.

That rate is linear until the boiling point of the water (wort) is reached. Then it takes 2.13 BTU (539.6 calories) to get that 1 gram of water to boil (heat of vaporization for water).
This assumes that the heat transfer is 100% and there is no heat lost to the enclosure (pot) or surrounding atmosphere.

Water is 8.3 lbs. per gallon
and 1 lbs. is 453 grams.
Therefore 5 gallons of water is 37,600 grams.

Assuming perfect heat transfer from the burner to the water -
it will take a minimum of 80,770 BTU to get the 5 gallons of water from 100 degrees Centigrade to boiling.

How much heat passes around the pot on your Cajun burner ?
Comment by: Anonymous Brewer reply to comment
Re: Caution with Propane Burners Apr 13th 2005, 12:25 pm
damn good answer.... since some mounths i'm searching for that kind of answer!!!
Thanks indeed for it...
The heat transfer is not easy to see, because i don't have the burner nor the kettle!!!
I've got my little stuffs that work good, but i'm prepraing the installation of a bigger one (around 100gallons) to make beer more professionally...
Thanks a lot for the info.
GreG.
Comment by: greg reply to comment