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Self circulation low volume liquid coolant system

Self circulation low volume liquid coolant system

Self circulation low volume liquid coolant system

(OP)
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%?

RE: Self circulation low volume liquid coolant system

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.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

RE: Self circulation low volume liquid coolant system

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: Eng-Tips.com Forum Policies

RE: Self circulation low volume liquid coolant system

(OP)
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?

RE: Self circulation low volume liquid coolant system

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.

RE: Self circulation low volume liquid coolant system

Hire an Engineer familiar with heat transfer to do this.

Also read forum policies which read as follows:

>>These fora should not be used to bypass your own in-depth research on the issues that affect you, nor is it intended to be >>a substitute for appropriate professional assistance within your field or geographical region.

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