cooling question

fdd2blk · Jun 14, 2008

my friend has a room. 5000 watts. he is pulling in new air from outside and exhausting outside in a different location. the temps outside have been in the upper 90's. he runs his lights at night. his daytime temp (lights off) is in the 80's. he bought a HUGE A/C unit. the problem is, the exhaust is venting the room to fast to allow the A/C to cool it. what should he do? thanks. :blsmoke:

LoudBlunts · Jun 14, 2008

what about those fan dimmer things & dialing it down some?

fdd2blk · Jun 14, 2008

LoudBlunts said:
what about those fan dimmer things & dialing it down some?

he's running two 6 inch inline fans into the attic at the moment. i told him to shut one down. he's gonna try that tomorrow. i suggested an A/C window unit but he doesn't seem to think it will work. right now he just has duct work over the window for intake. i think he can find a nice little unit to fit in there. i'm not sure how it would handle the suction of the exhaust pulling on it though.

something like one of these .........

to go here .............

WiiToke · Jun 14, 2008

just a thought, why does he have the exhaust sucking from the bottom of the room? Wouldn't it make more sense to put an A/C unit into that space (where the exhaust is now) and put a passive (or active) exhaust high up in the room to suck out the heated air?

Cheers, :joint:

</IMG>

fdd2blk · Jun 14, 2008

WiiToke said:
just a thought, why does he have the exhaust sucking from the bottom of the room? Wouldn't it make more sense to put an A/C unit into that space (where the exhaust is now) and put a passive (or active) exhaust high up in the room to suck out the heated air?

Cheers,
</IMG>

that's the intake. the exhaust goes into the ceiling .......

fiender · Jun 15, 2008

Hi Fdd,

Are the lights air cooled? Couldn't he cool the lights with air directly from the outside, through the lights, and exhausted back outside. If feasable, this would remove a lot heat without exhausting the whole room. then the AC could cool the room.

i dunno... just a thought.

NewGrowth · Jun 15, 2008

He need a climate controller to turn on and off the fans and regulate fan speed as well as control the A/C unit.

fdd2blk · Jun 15, 2008

fiender said:
Hi Fdd,

Are the lights air cooled? Couldn't he cool the lights with air directly from the outside, through the lights, and exhausted back outside. If feasable, this would remove a lot heat without exhausting the whole room. then the AC could cool the room.

i dunno... just a thought.

hhmmmmm. that's something that might be workable.

fiender · Jun 15, 2008

might need another fan to refresh the air in the room from time to time though... or you run co2 if your not exchanging the air.

I always wanted a closed circuit grow room like that.

skunkdog · Jun 15, 2008

fiender said:
Hi Fdd,

Are the lights air cooled? Couldn't he cool the lights with air directly from the outside, through the lights, and exhausted back outside. If feasable, this would remove a lot heat without exhausting the whole room. then the AC could cool the room.

i dunno... just a thought.

only way to go i think,, :hump:

fdd2blk · Jun 15, 2008

the temp outside is 100 degrees though. the problem is when the lights are off.

NewGrowth · Jun 15, 2008

These things work great for larger grows CAP AIR-3 Atmosphere CO2/Temp/ Humidity Controller w/ Photosensor - Imported Products - Cheap Hydroponics - Indoor Gardening and Hydroponic Supplies - (Powered by CubeCart)

LoudBlunts · Jun 15, 2008

tell him to drop one of the fans or put the a/c in the window!

fiender · Jun 15, 2008

fdd2blk said:
the temp outside is 100 degrees though. the problem is when the lights are off.

If the lights are off, then why is he running the fan?? :-?

Seems like he should just be running the AC without the fan during the dark period..

NewGrowth · Jun 15, 2008

fiender said:
If the lights are off, then why is he running the fan??

Seems like he should just be running the AC without the fan during the dark period..

I agree install a couple photosensor switch so the A/C turns on when the lights are off and then and couple fans turn off. I personally would not set up a grow of that size w/o a climate controller just my 2cents.

skunkdog · Jun 15, 2008

mite be time for him to spented more money?

sealed room running ac/Dehumidifier and co2.or just the window ac.

bummer when out side air is to hot to use.

fdd2blk · Jun 15, 2008

i always run my exhaust 24 hours. i thought everyone did.

roseypanties · Jun 15, 2008

New Growth has it. Seen this before and make sure the timers on all your electronics keep the temp. play around with them and make sure they stay under 80 during sleep or hit 75... release me......aaaa hhh yeeeeaaaa.. sorry Pearl Jam is on. .
Keep the babies at Perfect temp as you already know and they will give us back what they were made to be, Lovely Smoke.

skunkdog · Jun 15, 2008

fdd2blk said:
i always run my exhaust 24 hours. i thought everyone did.

same, to remove the humdity at night time.

NewGrowth · Jun 15, 2008

skunkdog said:
same, to remove the humdity at night time.

An A/C unit will suck the humidity right out of a grow space.

cooling question

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