exotic watercooling Peltier Module Cooling

[Punk with the Backpack]

Has anyone tried: cooling a cpu with an peltier module and using the generated voltage for something? / Integrated peltier modules into a watercooling loop?

Plz send pictures :D

[porina]

What "generated voltage"? They consume a TON of power, the resulting heat has to be disposed of on top of whatever it is you're cooling. Good luck with that.

[Windows7ge]

I tried using a 40W Peliter on a 4 core AMD socket AM1 processor (very low power, low heat output). It "worked". The CPU didn't overheat but it didn't get any cooler than with the original heatsink. In fact I think it got hotter.

 

I then tried a 100W Peltier on a 3930K and a waterblock to cool the hot side. The CPU almost immediately started overheating. Barely into the BIOS.

 

It's not particularly viable. You need a peltier with about double the Wattage of the chip you're trying to cool then a cooler that can handle all of that.

[Punk with the Backpack]

4 minutes ago, porina said:

What "generated voltage"? They consume a TON of power, the resulting heat has to be disposed of on top of whatever it is you're cooling. Good luck with that.

When you heat up one side of a peltier module it will generate a voltage. :v

Im just not sure if you can power anything with it or the voltage isn't as stable as i thought.

[Dujith]

That would be an thermoelectric generator, a peltier needs power to work. Same thing it seems, different name used  

Having said that they need a big temperature difference to do anything. For example: CPU at 70-80 and ambient/cool side at 25 would give you 1,5v at 0,2A = 0.3W

 

 

[Punk with the Backpack]

2 minutes ago, Dujith said:

That would be an thermoelectric generator, a peltier needs power to work.

Having said that they need a big temperature difference to do anything. For example: CPU at 70-80 and ambient/cool side at 25 would give you 1,5v at 0,2A = 0.3W

 

 

You can use the Peltier as a generator. The Peltier Effect works both ways, im just not sure it will work like i would like it to. 

[porina]

1 hour ago, Punk with the Backpack said:

When you heat up one side of a peltier module it will generate a voltage. :v

Im just not sure if you can power anything with it or the voltage isn't as stable as i thought.

Ok, the confusion lay in that you mentioned cooling, which requires you to put power into it. Using it as a generator means you get something out. The power generated will be tiny, and also you're going to have a seriously unhappy hot device next to it... it's not about voltage as much as total power, it just wont be much.

[Punk with the Backpack]

3 hours ago, porina said:

Ok, the confusion lay in that you mentioned cooling, which requires you to put power into it. Using it as a generator means you get something out. The power generated will be tiny, and also you're going to have a seriously unhappy hot device next to it... it's not about voltage as much as total power, it just wont be much.

Well if you close the circuit it will draw current, which will absorb power (heat) from the cpu shroud. I guess it wouldn't really manage the power output (maybe with a super big heatsink). I just wanted to see if someone ever tried powering something in that way / cooling a cpu. 

[Old Man of the Sea]

On 8/29/2019 at 4:44 PM, Punk with the Backpack said:

Well if you close the circuit it will draw current, which will absorb power (heat) from the cpu shroud. I guess it wouldn't really manage the power output (maybe with a super big heatsink). I just wanted to see if someone ever tried powering something in that way / cooling a cpu. 

Yes, I do it all the time. I cool my whole computer (CPU; GPU; PCI e) from the inside.
Remove the fans so I don't lose my cool. 

Also, you hit the nail on the head. My heatsink is 180mm x 100mm x 30mm per 100W with 120mm 0.3A fan. Two of these units with a water jacket (between the peltier modules) sandwiched in-between with a digital thermostat for control. Modulate just one of the four peltier modules. All the rest of a liquid cooled system is the same, just no radiator. Unit goes on the floor.

Hot facing out, cold facing in!

The pictures include my thermostat, the setup behind my computer, and a basic system I use for a cooling vest.
I've been doing this for years, I use car antifreeze aluminum radiator formula with no problems.

[Fakmykak]

All that work, to just achieve 44f lmfao