-
ICMag with help from Landrace Warden and The Vault is running a NEW contest in November! You can check it here. Prizes are seeds & forum premium access. Come join in!
Air Cooling 4-1000watters
- Thread starter 619Sativa
- Start date
ItsAllOver
Devil's Advocate
It depends. Are you carbon scrubbing at the beginning of the line? End of the line? Not at all (sealed room, etc.)?
ambient temps in the room these cabs are in is important as well.
SergeantGod
Member
I used two 8" Max Fans (654 cfm) open on the intake side so it was pulling air from the room and venting out. seems like it raised the temps 8-10 degrees from the ambient temp.
Hope that helps
Hope that helps
I am currently cooling 2 Magnum XXXL 6" hoods with 1K's, with a 8 inch vortex. Perfect. Would fully trust 2 8 inch vortex's to vent your hoods @ 1 fan per 2 hoods.If you had any question left in your mind, moving up to 10 inch fans would supply a lot more movement especially if you are moving the air over a long stretch of ducting AND using hoods with 8 inch openings. Would also highly recommend using insulated ducting to keep the heat in the tube and not in the room. I had a noticeable decrease in temps in the room when I changed over to insulated ducting.
My air intake comes in through the wall through solid sheet metal duct work. A "T" shaped fitting is installed for 1 hood. Another length of metal ducting past that "T" ends with a 90 degree metal elbow going into the second hood. All seams in the ducting, T, and 90 degree elbow are taped to keep from pulling air/co2 out of the room.
Insulated ducting is on the discharge side of the hood straight to a Y connection then to the 8 inch fan.
Keeps the lights very cool.
I'm gonna be going with the sunleaves Sunspot 8 reflector. It is supposed to be completely air tight, and the openings are 8 inch. The first fan would be pulling air from a seperate room, have a 4 ft duct stretch, through 4 hoods over 16 feet, then have a second fan attached at the other end, pushing the air out the roof. Hope that explanation makes sense, I'm a little high. I was planning on using fully insulated ducting, 8 inch, and possibly some heat shields for the reflectors, fans and ducting.
Just clarifying, are you trying to evac the air through 4 hoods that are tied together?
Kinda like this-
duct work-from outside room
fan pushing outside air into the first hood
hood
hood
hood
hood
fan to roof?
If so, better to separate the hoods into 2 separate systems, each tied into the duct work coming in from the outside room, through 2 hoods then out through the roof with the fans. Pushing air through the hoods isn't an effective use of the fan.
It'll be hard to keep the heat down with 4 1K's in series.
Kinda like this-
duct work-from outside room
fan pushing outside air into the first hood
hood
hood
hood
hood
fan to roof?
If so, better to separate the hoods into 2 separate systems, each tied into the duct work coming in from the outside room, through 2 hoods then out through the roof with the fans. Pushing air through the hoods isn't an effective use of the fan.
It'll be hard to keep the heat down with 4 1K's in series.
That is exactly what I was planning. Do you see any flaws in this design?
You would get much better air flow and venting if you just ran 2 hoods per fan. Pushing air through is not as efficient as pulling air through the hoods.
I see what you are saying. My actual design will include 8-1000watters, in 2 rows of 4. I didn't want to have exhaust fans over the tables, but if I have to I will. You are saying I should use 1 fan for 2 hoods, and pulling not pushing. That would mean I should get 4-8 inch vortex's, right. Kinda like this,
duct
hood
hood
fan- out roof
hood
hood
fan- out roof
or would something like this work
fan-pushing
hood
hood
fan-pulling
hood
hood
fan- pulling out roof ???
I have heard that it is more efficient to pull, rather than push, but I have also heard that it is not good to be constantly pulling hot air through the fan, so which is it. I guess if you can keep the air cool enough going over the bulbs, which would be ideal, than it would be better to pull.
But like my example, would it work to have 3-8 inch vortex's in a row cooling 4 lights? One fan pushing, and the other two pulling.
Pulling is almost always more efficient and less stressful on fans. Is your grow legal? If it isn't I wouldn't suggest venting out of the roof as that can be a tip off to cops and easily detected. I always liked the cooling setups that utilized chillers and radiators myself but thats a lot of cash.
The grow will be in a basement in a home I am moving to shortly, so venting out the roof isn't really going to be venting outside. But I'm only going to be able to pull in air to cool the hoods from one side of the room. The room will be 24 feet long. 2 4x8 tables in a row, with central ac, co2, and santa fe dehuey. The room will be sealed. The fans will only be used to cool the lights, but I can only really have 1 run of ducting for all 4 lights.
