David Kanter (dkanter@realworldtech.com) on 6/22/11 wrote:
---------------------------
>A peltier is a heat exchanger, there's no reason why it needs to simply use the
>air to dump out heat. What about a Peltier that pumps heat to the liquid nitrogen?
>You could get a much larger surface area that way.

But would it work at such low temperatures?
for all I know they are just too inefficient.
in the end the coolant is always air.
using anything else than over-sized air cooling makes only sense to me under space-constrains, if one can not channel enough air through the rack or fit the exchanger.