Thermosiphoning - 
The existence of a T&P valve suggests untapped energy source.
Implementation example -We surround a wind mill with vertical evac tubes,raising water,
then drop the load, hydro generating. then repeat the cycle .
I agree with you, continuous flow probably won't work.
But filling a basin, then dropping it, would work.
This is not a stand alone solution, but rather an add on.
That's the concept, we need help.
Figuring out how to bring concept to fruition.
How, and who to pitch this to ?
where we get funding ? gov grants ? crowd funding ?
Calculate loads ?
How do we explore further developments with your services ?
Regards JP.