How do you know if you need a jet burner or a cast burner? If you are boiling large pots of
seafood you will need a jet burner. A jet burner is normally required for pots of 40 quarts and
If you are frying, boiling small pots of seafood, simmering stews or pots of chili, then a
cast burner is the right tool.
Propane burners are often rated by BTUs, but what they really mean is BTUs per hour.
A BTU (British Thermal Unit) is the amount of energy required to raise 1 lb of water 1 degree
Here is how to calculate how many BTUs you need for your pot size. Water density is 8.3 lb/gal.
To raise 1 gallon of water (1 x 8.3 = 8.3 lbs) from 70 to 212 deg F in 1 hour you will need 8.3 x 142 = 1,178.6 BTUs.
Using this BTU requirement for each gallon of water you can figure out how many BTUs would be required
to bring your pot of water to boiling temperature in one hour. For example, a 30 quart pot (7.5 gallons) (full) would require
7.5 X 1,178.6 BTUs = 8,839.5 BTUs to bring the pot to a boil in one hour, assuming 100% efficiency. If you wanted
to bring that pot to a boil in 15 minutes, you would need 4 times the BTU output or around 35,000 BTUs/hr.
You know you aren't going to transfer 100% of the BTU output to the pot, so even 35,000 BTUs/hr is
not going to get your full 30 quart pot boiling in 15 minutes.
Your propane burner is not designed to operate on natural gas and no conversion kits are