Pro/Forums - View Single Post - Peltier-based water-chilling experiment

Cathar · 02-17-2003, 03:14 PM

Maybe I poorly phrased myself and that's what you're jumping on.

I'm well aware of peltier efficiency with respect to voltage. I really should have said "half-voltage", not "half-capacity". Before jumping on me, if you read through my post again, you'll notice that I said I'd be aiming to 120W of heat moving power per element, rather than 80W. I never thought for a moment that if I doubled the voltage/power than I'd achieve double the heat-moving potential.

Thanks for jumping on me Since87 and picking up on it, but in this instance you were merely jumping on my phrasing, rather than my understanding.

JimS/Robotech, yes, only just now have I started to poke around and have seen both of your experiments. Very good. Very inspirational. Gives me something to aim at!

The micro-fin blocks I'm getting made up are going to be some pretty finely engineered (read fine = small, rather than fine = good) blocks. Fine enough to make the smallest micro-fin heatsinks you've seen look "clunky" in comparison.

I already talked about getting a long one made up like JimS's with the machinists. What I'm aiming for here is for a more efficient heat exchange on both sides of the peltier to see if I can get those coolant temps well into the freezing range. My goal is with a White Water CPU block to get to below 0C full-load CPU temps. It may not be possible, but I'm going to try for it.

02-17-2003, 03:14 PM	#7
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	Maybe I poorly phrased myself and that's what you're jumping on. I'm well aware of peltier efficiency with respect to voltage. I really should have said "half-voltage", not "half-capacity". Before jumping on me, if you read through my post again, you'll notice that I said I'd be aiming to 120W of heat moving power per element, rather than 80W. I never thought for a moment that if I doubled the voltage/power than I'd achieve double the heat-moving potential. Thanks for jumping on me Since87 and picking up on it, but in this instance you were merely jumping on my phrasing, rather than my understanding. JimS/Robotech, yes, only just now have I started to poke around and have seen both of your experiments. Very good. Very inspirational. Gives me something to aim at! The micro-fin blocks I'm getting made up are going to be some pretty finely engineered (read fine = small, rather than fine = good) blocks. Fine enough to make the smallest micro-fin heatsinks you've seen look "clunky" in comparison. I already talked about getting a long one made up like JimS's with the machinists. What I'm aiming for here is for a more efficient heat exchange on both sides of the peltier to see if I can get those coolant temps well into the freezing range. My goal is with a White Water CPU block to get to below 0C full-load CPU temps. It may not be possible, but I'm going to try for it. Last edited by Cathar; 02-17-2003 at 03:42 PM.