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Wisconsin | I brought up the surface area, I was thinking out loud and I was wrong. When you have 50 gallons of propane left, that quantity can cool very easily because it's sitting in the very bottom of the tank, the outside of the tank at that level will get covered in ice if it's not already sitting in snow, and once the propane cools itself to -40, there's no more pressure.
If the tank has 400 gallons (max in a 500 gallon tank), the larger quantity of liquid will have to cool before the pressure will drop, and it will have a larger surface of the tank in contact with the liquid and warming the liquid.
The propane will boil based on temp and pressure, the surface area just makes it boil more violently if it's all in one spot compared to spread way out. | |
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? on 500 gal l.p. tank
