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**Acidjazz54** · 09-30-2009, 01:47 AM

Quote:

Originally Posted by Highlandsbrew

I had to install a service port on my window ac to recover the refrigerant, weld in ports are best, piercing type will work, but tend to leak over time.

Cool. Just curious. Do you have anything in the fermenters right now? If so, how long until you reap the benefits? As far as power usage, do you think this is a pretty efficient design?

Highlandsbrew · 09-30-2009, 02:01 AM

I have an oatmeal stout fermenting now, I plan to crash cool it and keg it on Friday, as far as cost of running, right now it hardly runs, I think because of the insulation around the keg and the cold glycol that stays in the coil around the keg after system shuts off, I noticed that the temp drops about 1 degree below my set point about 15 min after it shuts down.

P-Lay · 09-30-2009, 07:47 PM

Quote:

Originally Posted by Acidjazz54

P-Lay,

I plan on doing the same thing with the multiple fermenters. I was thinking that this project would be the perfect use of an Arduino. See sean coates project on uHobby. Good luck and let us know when you do it.

Highland, hope it works out well. How did you remove the refrigerant?

Do you have a link to that project? I can't seem to find it. I'm not familiar with uHobby.

**Acidjazz54** · 10-01-2009, 12:20 AM

P-Lay,

Here is the link to the original. This one is pretty basic and should be easy to modify. He has also done a second version with an LCD but I was only able to find that one once. Luckily I downloaded the code and if you'd like I can PM it to you.

http://www.uchobby.com/index.php/2007/10/08/arduino-beer-thermostat/

P-Lay · 10-01-2009, 02:37 AM

Quote:

...I wanted to get it working now, not in a week, or more, when a controller would arrive. Additionally, these controllers can run for anywhere from $60-200. I didn’t feel like waiting, and I didn’t feel like paying. So, what’s a resourceful geek supposed to do? Build your own, of course...

Just breezed through that tutorial and found that funny.

That's a cool project. I'm not sure if I want to go that route or the BCS-460 for multiple fermenters. I have some decisions to make - but not for a while.

Thanks!