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we operate a massive mining farm. mechanical cooling has cost us a lot. we are currently using heat removal method by evacuating air from containers and buildings ever 4.5-7.5 seconds. i was told liquid cooling is a great option. all i know boiling point is 34c but as you know mining operates at 56-79c at times. optimally 56-65 max. i am wanting to experiment with thermal unit on GPU and without. i am looking for guidance on how to do my calculations as well as the best way to set up the submersion system. i saw that allied control create liquid cooling for mining operations but i got pricing and they are way over priced and i think i can do it my self. my idea model is to have two radiators per tank of submersion for sake of redundancy but one radiator can operate the whole thing. but as far as specific logistics and testing i am wanting guidance and enlightenment on how to go about it so that i can be efficient while testing.
 

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I think you might be mixing up novec, water cooling and oil submersion, When using novec its usually a completly sealed system that evaporates and condenses the novec as it boild above 30 degrees C, you would fill a closed system with the novec allowing a space above for condensing or an actual condenser to reprocess the novec. (Novec usually is more expensive and requires specialist equipment)

Liquid cooling is much simpler and possibly a bettwer option for you,
Each GPU gets a block that allows liquid to flow through areas of high heat transferring that heat away to the liquid then out to an external radiator, this can be used both on CPU's and GPU's (more benaficial for mining)

Finally you have oil baths" or mineral oil submersion (not always mineral oil),
this again requires you to submerge the motherboard and GPU's in a bath of mineral oil then you pump out the oil to an external radiator to cool it before recycling in back into the tank.

Each has draw backs suck as evaporation or leeching plasticisers from cables etc.

I have provided links to all 3 types
Novec:

Liquid cooling GPUs:

Oil submersion:


Hope this helps, I have experience with all three in a server environment, if you need advice PM me.
Tom
 

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Novec sounds like an interesting liquid. Do you think it'll ever be feasible to be used in some sort of closed loop cooling system for gaming PC's?
 

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There's no reason why you can't use it now.


Except:
It's about as efficient as water for heat transfer.
It's very expensive. ($500/gallon+)
 

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There's no reason why you can't use it now.

Except:
It's about as efficient as water for heat transfer.
It's very expensive. ($500/gallon+)
Because of it's low boiling point I'm guessing it wouldn't make a good substitute coolant a liquid cooling build would it?
 

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Novec coolants are available with pretty much any boiling point you would want.
 

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The point in novec isnt to be used to carry heat away (like in a loop), its used as a phase change system to actually convert the heat into vapour (evaporation) and then recondense itself.
Using novec in a loop would be a waste as its much better making direct contact and boiling to then evaporate, look into how phase change works its exactly the same but instead of using a cooling head you do it on the component because its non conductive.
like i said ive used novec and its great but the ammount of infastructure you need to use it is expensive, watch the videos i posted, they should explain this all.
 

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Yes, Novec can be used in a phase change system, but why not use a standard refrigerant that is much cheaper (13A $125, or less, for 30#)?


Standard computer heat pipe coolers work by phase change. (Note that the work sideways and upside down because they have a wicking material inside to move the liquid phase back to the heat sink).


Novec is also used for immersion cooling (instead of mineral oil) as it's properties are much better for that use.


Have you looked into geothermal cooling?
 

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I only liked Novec in a liquid cooled build because it's non-conductive. I'm really unlucky with hardware and I know I'd get a leak if I went liquid cooled.
 

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Yes, Novec can be used in a phase change system, but why not use a standard refrigerant that is much cheaper (13A $125, or less, for 30#)?


Standard computer heat pipe coolers work by phase change. (Note that the work sideways and upside down because they have a wicking material inside to move the liquid phase back to the heat sink).


Novec is also used for immersion cooling (instead of mineral oil) as it's properties are much better for that use.


Have you looked into geothermal cooling?

Most refrigerants are conductive so would be useless in a standard novec system, it looks like youve only partly read my first post,
yes you immerse the components in novec but that is still a phase change system due to the evaporative cycle,
however as i explained it has to be a closed system as the phase change (the act of the liquid boiling and changing from a liquid to a gas) causes the novec to evaporate.
to clarify you wouldnt use novec as in a standard phase change environment as the evaporative qualities arent as good as say (CFCs), including R12 as these are designed to be compressed after evaporation, whereas novec condenses itself very well in a closed system.

also as a safety notice
*Novec is also used for immersion cooling (instead of mineral oil) as it's properties are much better for that use.*
no, it simply is not, an immmersion system is open and you pump out the liquid to then cool it with external radiators,
this simply wouldnt work with novec it would boil off in your radiators and evaporate away in a matter of hours.
Also the only properties you need for immersive cooling are thermal absorbtion (the ability of the liquid to absorb and transfer the heat from one component to itself) and non conductiveness, novec iisnt conductive but would be less optimal than de-ionized water or mineral oil.

Sorry billbartuska, not calling you out just adding clarity for OP.
 

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As in a standard phase change system. With evaporators on the components and a condenser for the whole system.
But then that can get you into heat exchangers and a cooling tower......
 
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