Has anyone tried this???? or do you think it would work???
 

I have an idea for an expiriment...
I have one of those travel coolers that use pelts to cool the inside and the hot side of the pelt is on the outside of the cooler. I made a copper coil about 25 feet long which is inside the cooler, i made an inlet for the air to go in, pass my the cool sink on the pelt inside the cooler, and a fan over the coil to get the cold air to pass by and cool off the water. I am only getting like 15 degrees of coolness, and i wanted more... would it work if i placed a block of dry ice on the heat sink outside the cooler, so the cool sink on the inside of the cooler would get to -50 less than the hot side, acording to the delta T of the pelt. Would this work? so say if it was 100 % efficent, the hot side would be -109.3 degrees F and make the cool side -159.3 degrees F which i would think air at around -100 degrees would cool off my 85 degree water!

do you think this would work?????

how did you plan to keep the hotside at -103? Also peltiers loose efficiency as you move away from room temperature.

i was saying if there was 100% efficentcy. make a hot plate for the hot side which dry ice would rest on, taking the temp of the hot side down dramaticly making the cool side even cooler than the dry ice.

surely it'd be better just to cool the cpu with dry ice directly? or the water for that matter, cooling the air with dry ice seems rather inefficient