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OfflineMangowaffle
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Registered: 08/11/17
Posts: 366
Last seen: 1 year, 1 month
Cooling plenum. Is bigger better?
    #26814390 - 07/10/20 06:09 AM (3 years, 6 months ago)

Hey guys,

Finally getting around to building my new cooling plenum / air conditioning room at my new farm.

I have some leftover z-lock coolroom panel I plan to build this out of. It will have a large split system for conditioning the air which will then be sucked into the fruiting room by fans. I can build the room 2.3m x 2.3m x 2.1m, or 3.4m x 3.4m x 2.1m


Is a bigger or smaller cooling plenum better?

On one hand, with a smaller room the air is drawn out faster by the fans which doesn't give the AC as much time to cycle the air and cool it down as much

On the other hand, a larger room takes longer to cool and the fans take longer to draw out (exchange) the air

Trying to decide which is the better option


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OfflineSHROOMSISAY01M
Mr. Shrooms
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Registered: 01/22/17
Posts: 3,849
Loc: Virginia, USA
Last seen: 1 hour, 47 minutes
Trusted Cultivator
Re: Cooling plenum. Is bigger better? [Re: Mangowaffle]
    #26816077 - 07/10/20 08:55 PM (3 years, 6 months ago)

The plenum needs to be the right size for the blower you have. If it is too big it will reduce the pressure you get out of your ducting. The plenum builds up pressure and diverts the flow of air out different ducts located in different parts of the room. Once it is installed properly your system needs to be balanced so all registers put out the same amount of air to make it work properly.


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Invisiblemicelio
Song of Silence
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Registered: 04/22/14
Posts: 1,547
Re: Cooling plenum. Is bigger better? [Re: Mangowaffle]
    #26816151 - 07/10/20 09:44 PM (3 years, 6 months ago)

It's not easy task to cool a grow room for edibles.

Oysters need 4 fresh air exchanges each hour. There goes your cool air.

Then there's the problem with spores plugging up your evaporator on your ac unit..

It does take some thought and good engineering. I'm sure I'm not telling you anything new...

Hey anyway good luck.  Keep us posted on your endeavor.


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