Cooling in small spaces

[turtle420]

The 80mm fans I mentioned are ~50 CFM each.

Fancy schmanzy computer fans?

Ohh... nice. Pretty.
No.

Again, they are not designed for that.
Do as you please from now on.

Could something like a Peltier on intake cool the air inside the box sufficiently to negate the heat buildup from exhaust outside the box?

Ok, dude... computer hardware has very limited use on cannabis growing.
Peltier thingies will do jack-crap against 400 watts of High INTENSITY Discharge bulbs.

In addition... I do not understand your question.
Will it cool the intake air?
Sure.
Enough?
No.
Negate the heat build-up from exhaust outside the box?
What?
Ummm... what?

I fail to comprehend this setup.

How about a U piece of duct with water at the bottom so that the hot air is pulled through, perhaps with a system to cycle the water?

You know, I would say 'no', but... go for it.
I doubt it will work... but hey, there is only one way to find out.

In this second idea of yours, I also fail to comprehend it.
What's the point of the water/U-duct?
What's the point of the water cycling?
Like a radiator?
Get a radiator then. They have been around for over 200 years. They are pretty much nailed down by now.

Best of luck to you buddy,

-turtle420
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turtle420 Reviewed by turtle420 on 03-05-2008. Cooling in small spaces A wooden box with dimensions 36"x20"x60" (25 cubic feet) sits inside a closed space measuring 37"x61"x93" (121 cubic feet). The closed space is used for storage and so actually has less room than that available. Is it possible to use a 400 watt HPS light with hood inside the wooden box and still maintain optimal temperatures? Preliminary tests suggest that temperatures easily exceed 100°F within the box, using 2-3 80mm fans each on intakes and outtakes. The light itself generates most of Rating: 5