Cooling with just one rad

[Otis11]

Now if anyone lived near a lake, sinking a 100m or so of tubing on the bottom of a lake and using that to radiate heat into a lake would work pretty damn good I think. Kinda like a nuclear power plants often do A river or stream would work well with a radiator I would think, keep some flowing water moving over the rad.

I've thought about trying this... but I don't have nearly enough rigs... or a lake.