Comment by pjc50

Not really, because you're pumping it against the thermal gradient to start with. Low temperature difference heat is one of the more worthless things in the universe.

The only way you could make this viable would be to change silicon processes to those capable of running at significantly over 100C. This incurs a big efficiency penalty, but then you can start boiling water directly off the die and letting the steam move itself, perhaps to some sort of Stirling engine condenser cycle, with a lot less pumping losses.