Quote Originally Posted by n00b 0f l337 View Post
No, you can create a liquid delta
Its done but normally needs much larger systems, I've gotten cold side down a few degrees actually, seems to help temps when the rad can take the heat
Here's what I mean:

Run a loop on the cold side and another loop on the hot side. Measure the temps in the cold loop vs. TEC voltage. Now run the loops in series. The temp coming off of the cold side (where one would presumably place the water block) will now be wamer than it was at equal volts across the TEC. Therefoe the temps rose.