CloudDriver wrote:
However, the suggestion to insulate the propane tanks is absolutely the wrong thing to do - unless you also supply some source of heat inside the insulation. A bare propane tank absorbs heat energy from the surrounding air which then evaporates the liquid propane to gas to supply the appliances. A draft of air around the tank actually increases the rate of heat transfer into the tank, improving the rate of evaporation and keeping the pressure inside up. Insulating the tank cuts off the source of energy needed to evaporate the propane to a gas. Propane boils at something like minus 44 degrees F, so an air temperature above zero is plenty warm to boil off enough propane from a full tank to keep the appliances supplied.
You are correct sir! I was actually trying to explain building an air gap to surround the tank(s) where the airspace surrounding the tank can be regulated, and after re-reading this thread I left out half my thought! :o
