Originally Posted by tha808evangelist
We live on this earth and are subject temporarily to it's rules of physics, any time there's coolness there's a risk of condensation.
Everyone is always subject to the laws of physics.
As for "coolness" creating a risk of condensation, that's not quite the whole picture. A better way to think of it is looking at the bigger picture. Condensation can only form on a surface that is colder then the air around it - so if you're dumping cold air onto something warm, the warm surface cannot have condensate form on it.
In the window duct scenario, the major places that condensation can occur are the outside of the duct (it is colder than the room), and the outside of the case (it is colder than the room). the real risk of condensation in that setup is when you STOP putting in cold air, then all of the sudden the inside of your rig is colder than the air coming in, and condensation MAY form, depending on (most importantly) the dewpoint of your household air, and other factors.
Condensation will likely not form on anything that produces heat, as that surface will move very quickly above the dewpoint. If it happens to be a day where it's near freezing, and there's a low lying fog outside, that might not be the day to use the window duct.Edited by u3b3rg33k - 1/16/12 at 9:28pm