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Is it possible to go down below ambient temperature with liquid cooling? - Page 2

post #11 of 30
You need phase change or a chiller to get temps below ambient.
Quote:
Originally Posted by slowman87;12791660 
My CPU temp is 19C (66F), ambient room temp is 69F. ?
Intel CPU temps are calibrated to be accurate only during load. Laws of physics (Newton's law of cooling/heating) triumph over poorly calibrated readings. The temperature of the environment where the radiator/heatsink is located is the coolest a CPU can get.
Edited by Riou - 3/19/11 at 12:34pm
post #12 of 30
Quote:
Originally Posted by slowman87 View Post
My CPU temp is 19C (66F), ambient room temp is 69F. ?
There is a sensor error somewhere. Either your ambient room temp sensor or your CPU temp sensor.
post #13 of 30
I got ya. Yeah I was just taking the reading from CPUID. My room thermo is probably off. LOL.
    
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post #14 of 30
my res is mounted outside and i dont know what temp it is in here but i very much doubt its the 12c coretemp is reporting.
i normally have a chiller in the res but its getting fixed,either way ambients outside must be around 12c so no its not possible or i dont know a way where it is possible.
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post #15 of 30
Quote:
Originally Posted by calebkan View Post
no chiller ,no dryice,no geothermal,no peltier only watercooling loop..

is it possible?
Impossible. Heat transfer is a function of the temperature difference between the object and the surroundings. When the difference is 0, the heat transfer is 0.
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post #16 of 30
if you use a chiller its possable to get at or below room temp idle only wouldnt get that low on load.
Edited by Bal3Wolf - 3/19/11 at 12:34pm
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post #17 of 30
Thread Starter 
ok ty guys..its ok now..so its impossible only watercooling loop..
    
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post #18 of 30
As has been said before, evaporative cooling (i.e. using a "bong" cooler) can do it relatively cheaply.
As the water evaporates and is dissipated as steam, more heat is lost than is possible with liquid water to air.
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post #19 of 30
Just because phase change involves more energy that still doesn't mean that it will be able to achieve subambient temperatures without something driving the evaporation/cooling.
Edited by ocpokey - 3/20/11 at 2:50pm
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post #20 of 30
The controlling factor will be the ambient where your radiator is mounted

If your rad was mounted outside your house where the temperature could be lower than where your rig is then you may have what appears to be sub ambient temps relative to your room temp. This might also mean that you would have to protect against condensation
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