Self circulation low volume liquid coolant system

[Hawxxy]

Im trying to figure out if it were possible to have a closed curcuit liquid cooling device with one directional valves that prevent backflow and keep it under 10cc for hand held CPU chips.

like so. I just dont know the thermodynamics of the avaliable coolants. this system is reliant on the expansion and compression of the coolant to circulate so unless there is a coolant that can both expand and be compressed I suppose it wont work.

here are the numbers.

CPU temperature unrestrained <80*C
connecting surface area 30 cm2
coolant avaliable 10 cc

questions:
would it circulate?
How high would the pressure be?
would it be able to reduce the temperature at least 50%?

 

[EdStainless]

Look into heat pipes. They rely on low boiling point fluids and use a wick to feed the liquid back. No valves or other parts.

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Plymouth Tube

 

[IRstuff]

try to read up on heat pipes. note, however, you have a certain power that must be removed, which requires a sink that can accept that power with the temperature differences you have.

TTFN
faq731-376

 

[Hawxxy]

I see. my problem would be that I rely solely on room temperature air to absorb the excess heat without a fan or any other moving part. the construction needs to work without consuming electricity. But it seems a heat pipe with ammounia would work. how long would it need to be to be effective at room temperature?

 

[mcgyvr]

Whats wrong with a suitably sized heat sink using natural convection only? Why liquid cooling?
No one can really answer your questions as there are too many variables missing. thermal resistances/watts dissipated,etc...
heat pipes work great in ambient conditions to move heat from 1 area to another.

 

[willard3]

Hire an Engineer familiar with heat transfer to do this.

Also read forum policies which read as follows:

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