Here is another illustration that was mentioned in the Heatsprings presentation, but a better illustration was found at home power:
This is a very low water temperature radiator from JAGA.
It uses small fans that look ever so much like computer fans, and if you look at the power supply, it looks ever so much like a 12v wall wart power supply.
Some more info
RIGHT_HERE.
This idea has abundant DIY potential.
-AC