Sealed room heat management without A/C or cool tube

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rambotheman

Member
Hey Everyone,

Just wanted to get an opinion on this:

I'm setting up my grow room to use CO2 (400W HID in use for lighting) and don't really want to use an air cooled reflector (due people stating a ~10% efficiency loss). AC is out the question due to price and difficulty sourcing mini split A/C where i am.

I'm looking to seal the room, then have a fan (with scrubber) suck the warm air into a vessel (such as a large water bucket) which could possibly be in a small refrigerator or attached to a water chiller within the room. The idea being to essentially "water cool" the air when needed. I could then just fill the vessel with cold water daily. Of course, this will suck the CO2 out too, but i can refill the room. Temperatures are the main issue here.

Has anyone tried this? Any success? Would this even work?

Many thanks!
 
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rambotheman

Member
Looks like it'll be a plasma light then >.< ... from what i've heard they pump out around the same heat as a 150w mh so that should be easy enough to manage.

I can solve the humidity issues with a dehumidifier, so i don't mind that.

Thanks anyway guys!
 
ilyaas123

ilyaas123

Well-Known Member
Yep, dehumidifier does the job well but if you are vegging then keep the humidity up; you only need to dehumidify when you flower.
 
chazbolin

chazbolin

Well-Known Member
look at inda-gro induction lamps run 1/3 the heat of an HID. No ducting required at all and they are full spectrum veg - flower.
 
jijiandfarmgang

jijiandfarmgang

Well-Known Member
A 400w hid won't put that much heat out depending on ambient temps and room size it might not be a big deal. The dehumidifier will probably out put more.

Co2 for a 400w light? sounds crazy to me.

If you did that idea with a chiller or fridge within the room you would actually have more of a heat problem.

- Jiji
 
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joe macclennan

Well-Known Member
SnapsProvolone said:
Your gonna have humidity problems.

Your looking for a magic fix but there isn't one.
Click to expand...

right.....I was thinking the same. Just asking for trouble.

the only way I could think to cool the room would be to utilize a water cooled heat exchanger but you would need to invest in some serious equiptment to do it right. and for a four hundred watt grow? I just don't see it.
 
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perfectroller89

Member
Buy a deep freezer and some stainless coil adapters and pond pump sit a bucket in the freezer filled with antifreeze then insert one coil of stainless with each end attached to hose then run one side of the tubing to what ever u need colder and the other to the pump in a loop and you've just made a home made chiller
 
SnapsProvolone

SnapsProvolone

Well-Known Member
Agreed.

Occam's razor seems to apply here

Among competing hypotheses, the hypothesis with the fewest assumptions should be selected. Ventilate the room. No need to reinvent the wheel.
 
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perfectroller89

Member
Cost about 75 dollars to make which is cheaper then a fan and I also run this to my res so not I by does it water cool my lights but cools my res temp
 
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perfectroller89

Member
Out of town for the week Google deep freezer water chiller . I also run this in a spiral pattern on front of the fan that blows on the ladys. Idea started from a simpler idea that college students use .

Since they are not allowed to have air conditioning units what some have done is take a fan and buy Cooper tubing then install to adapter to 3/8 line this this is feed to and from a 5 gallon bucket filled with ice water mix by a pond pump doesn't rly matter how strong
 
SnapsProvolone

SnapsProvolone

Well-Known Member
perfectroller89 said:
Out of town for the week Google deep freezer water chiller . I also run this in a spiral pattern on front of the fan that blows on the ladys. Idea started from a simpler idea that college students use .

Since they are not allowed to have air conditioning units what some have done is take a fan and buy Cooper tubing then install to adapter to 3/8 line this this is feed to and from a 5 gallon bucket filled with ice water mix by a pond pump doesn't rly matter how strong
Click to expand...
So you buy a deep freezer, copper tube, heat exchanger, fan, pump and misc hardware for $75?
 
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perfectroller89

Member
50 deep freezer craigslist.
pump 15 to 20 ebay
Cooper tube 10 Lowes
Fittings 3 each lowes need 2

I would hope you already had a fan

So about 80 unless u want to get super technical
Then there 3/8 black line 32 cent a foot antifreeze 2 dollars max
A drill bit 2 dollars .glue/sealant max 3 dollars .

Say 90 where can u find a good 6 in fan with ducting for less? Not to mention with this set up u can run c02 with out wasting it out the exhaust
 
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