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propane tank blankets

Mr. Wizard

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Anyone have any experience with these? This will be a good one to experiment with this weekend. Propane vaporizes on the surface of the liquid in the tank at temps above -47. Vaporization (technically evaporation in this case)is a cooling process; energy in the form of heat is removed from the environment in order to put the molecules into a gaseous state from the liquid state. So, I would think then that the tank blanket would keep the cold in from the cooling process and act like a freezer vs. a blanket to keep things warmer.

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What makes a propane tank freeze up? I've had propane heating stoves since the mid-1970's when I built a fish house heater using 2 gas burners out of a gas rangetop. I've had 2 other stoves since then, the current one being a Portable Buddy. I always had 20# bottles and have never had a freeze-up even in temps a lot colder than what is being predicted. In really cold weather I've seen frost form on the outside of the tank and that's it; didn't affect performance.

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The tank will be fine. It's the regulator that will freeze up on you, unless you run high pressure hose into the house and have the regulator inside with you. Then you run into the gunk form the high pressure hose, though, and possibly needing a filter before the regulator. I'm referencing the buddy heater/ lp tank deal, where the regulator is built into the heater instead of mounted at the tank, requiring a high pressure hose from the tank to the buddy. That is, unless you are using the quick connect camper-style connection, where there it bypasses the internal regulator so you need on at the tank.

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