Why Does Ice Form on the Outside of My Propane Tank?
DOT CylindersWhy Does Ice Form on the Outside of My Propane Tank?
Even on a hot summer day you might notice ice forming on the outside of your propane tank! Why?
First you need to know a few facts!
- Propane in your tank is a liquid under pressure.
- Propane boils (converts to vapor) at -44 degrees F and above. That is right ...below zero!
- When propane vapor pressure is reduced, then the liquid boils to replace vapor pressure
- Propane liquid (when boiling) extracts heat from the steel of the propane tank.
So how does Ice form?
- If the vapor pressure withdrawal exceeds the capacity of the steel's ability to provide heat,
- then ice forms on the outside of the steel propane tank.