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Old 10-04-2011, 01:02 AM   #1
chezhed
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Default Multiple fermentation chambers - one temp control?

Wondering what might go wrong if I ran two 3.5 cf mini fridges off one Ranco temp controller...I tend to ferment at one temp consistently in better bottles so I'm thinking, why not? Two identical fridges with two nearly identical masses...
What am I missing about this idea that would make me go buy another controller? Anyone ever do this?

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Old 10-04-2011, 01:15 AM   #2
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What is the current capacity of the Ranco controller? Will it physically run 2 fridges? The only other issue is different efficiencies between the two fridges.I would think they would be pretty close, but if one was older and the other brand new the new one might run a bit cooler. Are you opposed to cutting a pair of holes in both of them and connect them with PVC or something with a PC fan recirculating air between them?

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Old 10-04-2011, 01:32 AM   #3
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Quote:
Originally Posted by jeepinjeepin View Post
What is the current capacity of the Ranco controller? Will it physically run 2 fridges? The only other issue is different efficiencies between the two fridges.I would think they would be pretty close, but if one was older and the other brand new the new one might run a bit cooler. Are you opposed to cutting a pair of holes in both of them and connect them with PVC or something with a PC fan recirculating air between them?
Current capacity...damn good question. Will check...see, I knew someone would come up with a valid concern and I was being too simple.
Both fridges are identical (Avanti super conductor 2.5) and one is about 6 months old and one brand new.
Yes, I am opposed to cutting holes and connecting because I may need to move them in such position that then I would only have holes to plug...
Thanks
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Old 10-04-2011, 03:34 PM   #4
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Did you consider building a box around one of the fridges, to increase it's size enough to hold both bottles? This way you could use the other fridge for something else, and not worry about the dual control. There are plenty of threads about building one on here.

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Old 10-04-2011, 07:34 PM   #5
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Over kill voice here.....

you could build a fermentation chamber out of ply wood and insulation and use both fridges at the same time to chill the chamber.

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Old 10-06-2011, 02:18 AM   #6
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Considered a chamber but my average temperature in my garage through the summer has been about 100 degrees lately. That would be quite an insulated box and really probably a strain on these little fridges...plus it would be a pain to move. I'm stacking the two Avanti to utilize floor space.

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Old 10-06-2011, 02:54 AM   #7
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fyi, here are the output relay ratings for the single and dual stage Ranco ETC controllers...


I suspect a pair of mini-fridges would work fine paralleled off the NO relay points...

Cheers!

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