Sprayed Parts With Wet Duster

[sorryboi]

Greetings. Yesterday before leaving for a party, I quickly sprayed my PC Fans (particularly the GPU and CPU) and noticed that there was 'frost' growing on it. I then touched the fans and they felt wet. Is there any danger to my fans or components under them? I have never used this duster before, so I really wasn't sure what I was doing. I am currently writing this post on the computer I dusted. Should I be worrying about anything or do anything? Any support is greatly appreciated.

 

[ahnilated]

Sometimes the cans are over full and when you use them they actually are spraying a compressed very cold chemical. This can cause condensation but as long as you let the system dry and it is off it should be ok.

 

[coozie7]

It's very unlikely any damage has been done, the frost/damp will evaporate over time and the fact you're using the system is testament to that.

That sort of product will cause this type of freezing/damp/condensation if you use long bursts. Keep the can upright and only use short bursts, 2-4 seconds and then allow a little time for the can to warm up again.

Explanation: The gas is held in the can as a liquid, when you squeeze the trigger the liquid evaporates, this change of state (from liquid to gas) absorbs heat, causing the can to cool, as the pressurised gas escapes it cools further as its volume increases and pressure drops (Boyles Law), causing further cooling of the gas stream. If you want a solid demonstration, invert the can and spray the liquid onto a damp cloth, it'll freeze more or less instantly as the liquid rapidly evaporates and sucks the heat out of the cloth. WARNING! It'll be VERY cold! Don't touch it until it thaws!