Diy pool heaters?

Farmerstan91

Active member
Jun 28, 2019
26
Sw missouri
The following is hypothetical and somewhat in jest but if actually plausible who knows ;).

As stated in sig i have a 16k gal vinyl pool. I also have a 2m btu heater and 500 gal propane tank i have access to for free. Heater in its intended use has a big fan behind it and could be setup if needed(200amp service panel). How would one build a heat exchanger on a burner of this size to heat a pool? Would it melt the vinyl coming out the returns?