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Old May 26th, 2016, 05:49 AM
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Default Cool bot and cooler

getting ready to put numbers together for our cooler, and keep throwing around the idea of a cool bot, instead of the normal refrigeration unit.
Does anybody have any idea how many sq ft a cool bot and ac unit can chill?

cooler dimensions at the point is roughly 10x20 with 9' walls
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Old May 26th, 2016, 09:33 AM
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We are part of a co-op of 20 farms who grow naturally. Several of our farmers have installed cool bot units and all are very happy with their performance. Very efficient and effective. I'm putting up my building this year and will be making space for one as well. Cool bot has extensive advice on doing it right. A quick search should link you to several sources for sizing, which a/c units are best, insulating the units, etc. One friend found a small refer box off a truck and stuck the a/c unit through the wall. He put a roof over it for shade and claims that it keeps his market lettuces perfectly cool and it hadly ever runs. Just remember that cool bots aren't really designed to be walk in refrigerators that get accessed continuously. They are meant for periodic access, meaning a handful of times each day, but be efficient about opening it up.

Here's the link to all kinds of info. A 10' x 20' may require two a/c units if I recall the info correctly.

https://www.storeitcold.com/testimonials/
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Old May 26th, 2016, 09:41 PM
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I also know several farmers using them for veggies. As B&P mentioned, they don't like open doors and they take longer to cool a substantial amount of mass that's placed in the cooler at once than a conventional setup. They're certainly priced much cheaper.
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Old July 12th, 2016, 09:25 PM
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OK. Probably a ridiculous question and definitely a thought outside the box. What would happen if you used a cool bot and ran the cold air into a SS bulk tank to help cool the sap? If the sap were being circulated in the bulk tank, could it work?
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Old July 13th, 2016, 06:12 AM
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The cool air in the tank would help some, but if you have a cool water tank in the cool bot insulated room and then circulate it thru a heat exchanger in the tank with circulation in the tank too you might have a better method. You could use a simple coil of SS tubing or a plate heat exchanger, just be sure it is food grade. Then be sure the circulated liquid is potable water. That part would need to be changed and the entire system sanitized often enough to prevent issues with contamination.
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Old July 16th, 2016, 06:43 AM
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It depends on the size of your ac unit, the coolboot is just the control. I have a 9000 btu unit and it's more than enough for my small 8x8 cooler.
By the way I built my coolboot for under $100 using st1000 controllers and a small 10 watt heater. Lots of info on the coolboot site. Also if you could make it from a split system [mini split] it would be more efficient.
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Old July 16th, 2016, 03:06 PM
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Arrooo!?!?!? Mini splits??? Really?

Thanks for that bit, OMM. I never contemplated a mini split with a Coolbot.
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