Pro/Forums - View Single Post - Another DIY Peltier

Exie · 12-28-2006, 07:56 PM

WOW!

Thanks for the insights. I hear what your saying with the lines/rails in a stock PC powersupply. I just wanted to start off simple with cheap/common parts where ever possible.

I've just ordered 2 x 80W pelts (40mm x 40mm) which might consume about 130watts each, which hopefully my PSU will deliver. (I hate measuring heat in "W", I do fall for the trap of thinking in terms of electricity.)

I have milled out a prototype water block from some MDF I had lying around, and am pretty happy with how it looks. I'm now hunting down a block of copper I can mill out, and I'll see how it goes.

Can I ask a silly question, what does "0.1C/W" refer to ? heat absorbed by copper heatsink from the Pelt ? Some sort of themal efficiency ? <shrug>

At this stage, I have 2 Thermalright XP90C's which are old CPU heatsinks (with "heat pipes"), I was going to bolt on to the Peltier blocks. My equation might look like:
25c ambient + (0.1C/W * 80W Pelts) = 33c which should be no problem at all ?

I accpet that 80W pelts may not cool my water block & coolant by much, but I'd be happy with modest gains. Coolant temp currently sits at about 35c, if I could knock 5 or 10 degrees C off it, I'd be happy.

Thanks again for the insight.

12-28-2006, 07:56 PM	#3
Exie Cooling Neophyte Join Date: Sep 2006 Location: Melbourne, Australia Posts: 9	Re: Another DIY Peltier - Adivce needed WOW! Thanks for the insights. I hear what your saying with the lines/rails in a stock PC powersupply. I just wanted to start off simple with cheap/common parts where ever possible. I've just ordered 2 x 80W pelts (40mm x 40mm) which might consume about 130watts each, which hopefully my PSU will deliver. (I hate measuring heat in "W", I do fall for the trap of thinking in terms of electricity.) I have milled out a prototype water block from some MDF I had lying around, and am pretty happy with how it looks. I'm now hunting down a block of copper I can mill out, and I'll see how it goes. Can I ask a silly question, what does "0.1C/W" refer to ? heat absorbed by copper heatsink from the Pelt ? Some sort of themal efficiency ? <shrug> At this stage, I have 2 Thermalright XP90C's which are old CPU heatsinks (with "heat pipes"), I was going to bolt on to the Peltier blocks. My equation might look like: 25c ambient + (0.1C/W * 80W Pelts) = 33c which should be no problem at all ? I accpet that 80W pelts may not cool my water block & coolant by much, but I'd be happy with modest gains. Coolant temp currently sits at about 35c, if I could knock 5 or 10 degrees C off it, I'd be happy. Thanks again for the insight.