Home of the BrewNosers

After being annoyed by a worse-than-I-expected foaming issue caused by about 18" of beer line being at room temperature (from leaving keezer collar to up tap shanks in the wall), I've started putting something together that I hope will keep the lines chilled. I've built an insulated box around the shanks, and running two 2" PVC pipe lines between the keezer collar and the box - one will contain the beer lines and the other will be empty for air flow to circulate around the system. Like this pic: http://cdn.homebrewtalk.com/attachments ... ox-all.jpg

My question is, I'll need some sort of fan to push the air around - what should I get, and how can I wire it up to get electricity to it? I'm not electrically-inclined at all, but I think I do have a spare PC lying around somewhere - perhaps I can cannibalize a fan from that? A secondary effect I'm hoping for, is a more constant/stable temperature in the keezer from top-to-bottom. Advice, recommendations?

Probably be best to look at wiring 2 PC fan's into a dimmer switch to control the speed, and then into a 120v plug possibly. I've heard of this being done, but don't know how myself. Google may be the best answer.

Assuming you want the fan to run all the time but slowly, I would suggest an AC to DC adapter that lets you select the voltage. Just strip the end off and attach the PC fan to it.

Here is a video for how to hook up the fan.
https://www.youtube.com/watch?v=N9DMTQ2e7oM" onclick="window.open(this.href);return false;

this is the kind of plug
http://www.bestbuy.com/site/dynex-unive ... Id=3104194" onclick="window.open(this.href);return false;

EDIT* Forgot to say that the reason you want to adjust the voltage is that will adjust the speed of the fan.

I bought one for mine that I don't use anymore now that I extended my beer lines and put in a proper tower. 20 bucks and its yours if it will work for you.

https://www.ontariobeerkegs.com/Tower_F ... an-kit.htm