Hello,

Although I have been a satisified viewer and searcher of this site for about a year, this is my first post.

I have a question that I have been searching for an answer for for a while now, with no luck. Even my local hydro shop was unable to step up to the plate, so I now propose it to you guys:

I am running a dual room, liquid-cooled light setup with a liquid-cooled c02 generator and I am trying to figure out how to cool the room without expelling the c02.

The rooms are completely sealed (as best I could, and I am currently running a portable a/c that isn't cutting the mustard, so my question is this:

HOW DO I COOL MY ROOM WITHOUT LOSING C02???

Even though I am running liquid-cooled everything, I still build up heat from radiation, pumps for aero, and a nutrient chiller (1/10hp). Especially in the coming summer months.

Each time the c02 is pumped out by the a/c, the generator kicks in and and also pumps in more heat. I am running a computer-based monitoring /controlling system (growtronix), so I have the potential for optimum efficiency (Carnot is the goal for all you eggheads out there!)



Just so this thread doesn't get tainted with bad info:

• +Please don't tell me that window mount units wont pump out the inside air.
• +Please don't ask me questions about my setup not regarding my question-I will be more than willing to answer any PM's for side talk.
• + Please don't tell me to put a fan behind a radiator, as my cooling resevoir is a pool outside and in the summer will get to warm for this.

Thanks for any help!

Do you use any oscilating fans in your rooms? Keeping the air moving cools it and strengthens the plants. I keep one in my grow box and it works great for it.

Thanks for the quick reply, but I have to correct:

Adding a fan does not cool. It make's it feel cooler because more of environment can interact more effectively by forced convection, and you get a more uniform heat distribution, but the motor in the fan actually adds heat to the sealed room.

My problem is actually removing heat energy from the room.

I don't mean to come off like an ass, I am just burdened by the knowledge of an engineering backround.

I was actually thinking of you when I was writing this question, as I have seen your sig on so many threads, and you have been pretty damn helpfull to others!

BUT, to answer your question, yes I do have oscillating fans, but in a sealed environment, they can only do so much.

You have been around, have you seen any tricked-out room that manages to cool while being sealed?

Thanks again for your quick reply!

I am having the same issue i keep my room gets to about 92 Im lucky to have a strain that tolerates such heat. Just don't make the same mistake i did I bought a portable AC unit to go inside my sealed room and vented to the attic room stayed cool but guess where my co2 went. I am looking for help on this also.

Listen dont get pissed, but you said you have an engineering background... Basicly you need to make your room into a refrigerator.. They extract the heat , without removing the air, you need and compressor.. Somehow...

Hope this helps.. maybe?

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'I Am The End Of The World'... The Acacia Strain...

you need a wall/window a/c and thats that my friend, i had a portable a/c unit and the exhaust from that is whats doing you no good, your only bet is to exhaust that hot air and yes take a loss in co2, i run 3600 watts in air cooled hood attatched to a carbon filter, so i will have to constantly run my co2 tank more often as it is always getting sucked out, my opinion is you should vent(my filter/exhaust is on during light period) and run the co2 more often

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SOL: It's the Russian. AVI:A Russian? SOL:To be technical hes Uzbekistanian?AVI:I been dealing with those Russian dogs. AVI:give me a name.SOL:Urinov,Boris TONY:BORIS the BLADE? as in BORIS THE BULLET DODGER?AVI:why do they call him the bullet dodger?TONY: bcus he dodges Bullets Avi

Why not some sort of fancoil unit where the heat transfer is through a heat exchanger.


Whoops...sorry. I didn't notice the "fan behind the radiator" comment.

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Anything I say here is purely fictional. I do not use, or condone the use of illegal substances.

I have the same issue. I have yet to get a reply to the same problem. I'm with ya on this.

so let me get this straight, you designed and built your room without any exhaust? if you didnt want to make holes in the wall or some other reason then you shouldnt be growing in that space, my setup is built around the exhaust system and i run a carbon filter attatched to a "Y" with 2 450cfm fans, this cleans the air, cools the hoods and keep humidity in check, so what i lose co2, it costs me 18 bucks to fill a 20lb tank that lasts me a month, i think you may have made a mistake in getting all this high tech stuff without having a proper ventilation system

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SOL: It's the Russian. AVI:A Russian? SOL:To be technical hes Uzbekistanian?AVI:I been dealing with those Russian dogs. AVI:give me a name.SOL:Urinov,Boris TONY:BORIS the BLADE? as in BORIS THE BULLET DODGER?AVI:why do they call him the bullet dodger?TONY: bcus he dodges Bullets Avi

a bunch of you guys have completly sealed rooms, what do you guys do about odor? in many instances an a/c unit is not feasable, there for you need to suck out the hot air, i wouldnt set up a 3x3 closet unless i knew i could hook up duct fans

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SOL: It's the Russian. AVI:A Russian? SOL:To be technical hes Uzbekistanian?AVI:I been dealing with those Russian dogs. AVI:give me a name.SOL:Urinov,Boris TONY:BORIS the BLADE? as in BORIS THE BULLET DODGER?AVI:why do they call him the bullet dodger?TONY: bcus he dodges Bullets Avi