[jackhack]

That differential could run a Sterling engine.

[GregBuchholz]

You can run a Stirling engine on much lower temperature differentials:

https://en.wikipedia.org/wiki/Applications_of_the_Stirling_e...

https://www.amazon.com/Three-Stirling-Engines-Without-Machin...

[eternauta3k]

That differential was quoted for perfect insulation. Plugging in a heat engine is the opposite of insulation.

[52-6F-62]

My god, that could be a great asset to communities in water-starved regions of the planet.