TEC cooling

[Goldskis45]

So just to throw some info out there for people who want to try this themselves.
I find this to be the best place to find standard peltiers IMO
http://thermoelectric.alignsourcing...-modules-tem-/standard-thermoelectric-modules

And if you are ready to build something super specific I orderd a few custom gold plated modules from these guys and they were great.
https://www.ferrotec.com/products/thermal/modules/custom/

 

[remember300]

just had a thought about something, was chatting to a customer today, and we thought about using a mineral oil around where the cpu and the plate meet, around the TIM, this would help avoid any moisture build up as there is no water there, just not sure if the cold temps will affect the oil, will have to give this ago

 

[paulstung]

As a complete novice in tec cooling, couldn't a dual bay res be adapted somehow, like in remove the bottom section of acrylic, and replace it with ally or some other more suitable metal, and then mount the tec plate to that ?

That way the fluid is being cooled, and it is nowhere near any component, for condensation to be a problem. With the majority of cases having 3 front bay slots, mount the res in the lower 2, and have 2 40mm fans above as exhaust to remove the heat that would build up ?

As I've said I've no clue about tec cooling it was well before my time, I just thought I'd add my two pennies worth.

 

[SuB]

As a complete novice in tec cooling, couldn't a dual bay res be adapted somehow, like in remove the bottom section of acrylic, and replace it with ally or some other more suitable metal, and then mount the tec plate to that ?

That way the fluid is being cooled, and it is nowhere near any component, for condensation to be a problem. With the majority of cases having 3 front bay slots, mount the res in the lower 2, and have 2 40mm fans above as exhaust to remove the heat that would build up ?

As I've said I've no clue about tec cooling it was well before my time, I just thought I'd add my two pennies worth.

yes, but, you'd probably then cool all the liquid to below ambient which then makes condensation everywhere

 

[paulstung]

Bugger that for a thought then.... Wrap it in bog roll

 

[remember300]

then it looks ugly lol unless yor bog roll has little dogs or made of money lol, thats why id love to try this mineral oil idea, just need a cheap cpu and mobo i can 1 wreck and 2 OC well oc is not too much of a problem atm.

 

[paulstung]

I was thinking the posh stuff, with pretty flowers on, nothing bellow a 4 ply.

 

[remember300]

haha you deffo love thy bum lol.

tbh youd only have to cover one pipe and thats the tube from res to cpu or gpu

 

[SuB]

What about coating the mobo in some of that spray on hydrophobic shit? literally don't let the water actually touch it? Wouldn't that do it?

 

[RadeonHDx]

What about coating the mobo in some of that spray on hydrophobic shit? literally don't let the water actually touch it? Wouldn't that do it?

If you did this wouldnt the coating be scraped off, for example, if you put it on your RAM to avoid shorts, won't it just scrape off of the pins when you put it in the slot. I'd also think this applies to a PCI-E card.

 

[remember300]

once its all applied, it might work too but it would still get cold and may wash off with the condensation.

 

[RadeonHDx]

In GPU LN2 how do they deal with the condensation on the PCI slot and the PCB area? I was also thinking that this would be an interesting test to do with a cheap CPU and motherboard, only problem is that I don't have any watercooling else I would try this in a flash!

 

[remember300]

as far as im aware they use a putty to one stop water hitting the parts as well as being a poor thermal conductor stoping the heat being drawn into it from the gpu pcb.

 

[paulstung]

tbh youd only have to cover one pipe and thats the tube from res to cpu or gpu[/QUOTE]

If that's the case, couldn't a drip line be incorporated somehow, and have that incased in something with a drain line. Similar to what you do with fist tank pumps, filters, or heaters, when you have the power cable coming off,lets say the heater, before you reach the socket, you make a loop with the cable, so it lets any water drip off, before it causes problems.

 

[RadeonHDx]

Just found this on the neverwet website! It's showing how robust neverwet is and if its anything to go by, then neverwet could very well be a viable option for combatting condensation.

EDIT: It does however say that it degrades in sunlight so this could be a problem unless you have an attic mancave...

as far as im aware they use a putty to one stop water hitting the parts as well as being a poor thermal conductor stoping the heat being drawn into it from the gpu pcb.

Thanks for clearing that up for me. So it's a lot like CPU LN2?

 

[remember300]

as far as im aware its just a non conductive putty almost like play dough, the other thing about that neverwet is i don't know how it would react to materials on the PCB and if your using it in a case i doubt it will be in enough UV exposure to cause an issue most of it will be covered by TEC unit anyway.

The sluce idea would be ok but id not be happy having water that close to the parts, plus by doing that the case will become very humid, and could still have the same issues youd be better off covering it in a poor thermal conductive material. to stop any moisture onto the tube and to stop heat getting into the fluid you have just cooled. Also the more you cool it the more brittle the polymer tubing may become. and could spring a leak easily. If you use metal you then need tp be able to bend it well and not have kinks ... oh how fun this is with problems lol

 

[SuB]

Tbh I'm at the point with the thinking here that the best option is to create some kind of vacuum chamber and do it that way? Almost seems like the most practical way to do it now

 

[remember300]

you can create a lower pressure for home use but to try and remove all air would be hard and you would be better to do something like they do with double glazing and put a noble gas in there and only have that gas in there which would be non conductive when it cools to a liquid plus gas form, which is kinda hard to do at home.

 

[Goldskis45]

What about coating the mobo in some of that spray on hydrophobic shit? literally don't let the water actually touch it? Wouldn't that do it?

If you did this wouldn't the coating be scraped off, for example, if you put it on your RAM to avoid shorts, won't it just scrape off of the pins when you put it in the slot. I'd also think this applies to a PCI-E card.

once its all applied, it might work too but it would still get cold and may wash off with the condensation.

On the TEC 7970 we applied it to the entire card masking off the pins. The neverwet doesn't allow any condensation. We were worried that condensation would happen then just drip down the card, but it doesn't allow it to happen in the first place. Coating an entire motherboard is viable as long as all your components are installed or slots masked off.

 

[remember300]

hmmm i might have to give that a go, on this old mobo i have here and see how it performs