CPU cooling water

[factory100023]

Why do you need a water pump with a water cooler? can't they just have a tub of water resting on the water block? like water just sitting and absorbing the thermal energy... get what i mean?

its like a tall water block with a water reserve that just sits there an absorbs the thermal energy, is that possible? would it work?

 

[TbsToy]

Well, ya can just toss the whole thing in a tub full of water. That will save the need for a hydraulic pump and heat exchanger and all that pluggin stuffs in and the like.
Walt Prill

 

[rubix_1011]

Any volume of water will reach thermal equilibrium at working state, so if this were the case, you'd eventually just heat this volume of water up until it is no longer cooling the CPU. Water in a stationary state is less effective of dissipating heat than a heatsink is without a fan unless you create a surface area of water that is proportionately larger than the surface having heat conducted to it.

The reason you have a pump is to move the coolant through the system and into the heat exchangers or radiators in order to have active cooling (fans) dissipate the heat energy that is conducted from the water to the tubes to the fins. Even if you have a water cooling solution that does not use fans but still pumps air, you are more effective at cooling than just a static column of water on a heatsink since the flowing of water through the radiator still allows thermal discharge through to the surrounding ambient air via passive exchange (like a heatsink without a fan).

Well, ya can just toss the whole thing in a tub full of water. That will save the need for a hydraulic pump and heat exchanger and all that pluggin stuffs in and the like .
Walt Prill

This would only work with 100% pure water and even then, once contact has been made with metallic components (solder, copper, gold, silver, etc) the water becomes ionized and therefore will begin to conduct electricity and shorting everything.