How does water cooling on a desktop doesn't make condensation?

[Muhlis]

I'm a laptop owner, so I have little to no experience with desktop PC. How does water cooling on a desktop doesn't make condensation? What techniques or materials does it use?

[jaslion]

It's just like normal cooling it doesn't do anything special. If this is you thinking water evaporates then that doesn't happen at all. It's a sealed system.

 

Condensation happens when there is enough moisture in the air, a great enough temperature difference on a surface and the surrounding air and there isn't too much airflow.

[Fasauceome]

The only way to generate condensation is to have a method of cooling that makes the surface cooler than the air around it. 

 

Since the water in a water loop is carrying the heat to a radiator, it's ultimately the air that does the cooling. Since you can't use the air to make something colder than the air, you can't really get condensation.

[Windows7ge]

There's a chart for it on the Internet but in order for condensation to form a surface has to be below the dew-point for a given ambient.

 

Watercooling is always equal to or slightly above the ambient so unless you have a leak there is no condensation.

 

There are extreme edge cases of watercooling where you do have to worry about it but these aren't practical for everyday use.

[Needfuldoer]

Condensation happens due to changes in the air's relative humidity. Changing the air's temperature affects how much moisture it can hold, not how much moisture it's holding.

 

Warm air up and it will be able to hold more moisture and feel drier.

 

Cool air down below the point where it can hold all its moisture, and some of that moisture will condense out of it. (That's the dew point.) 

 

Water cooling loops can't cool below ambient temps, so they can't condense water out of the air. That's only a concern once you go sub-ambient with an exotic cooling solution like a water chiller, Peltier element, or a contraption built out of a window AC and a tailgating cooler.

[LogicalDrm]

-> Moved to Liquid and Exotic Cooling

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Water temperatures in normal loops aren't under room temp. There's no active freezing component, just fans cooling towards room temp levels. Any condensation would become a thing if temperature difference between coolant and room or any other level would become greater. That's why it's issue when sub-zero cooling is happening.