Looks like you would not have a safety blow off event, (> 2500kPa) that would require tank liquid well above 50 degC. And its hard to add that much heat to ~ 3/4 ton of liquid ... then add in the phase change.Here is a plot of propane vapour pressure valve temperature between 50 and 100 F . The pressure goes from 100 to 200 psi, but with time some of the actual vapour goes back into solution.
That's a giant tank for just hot water heating. We use only about 12-14 gal over six months for a gas range and oven and my wife cooks most every meal ... and bakes. - Arco
Last edited: