G
Guest
I would love to know how many cfm's u guys use to air cool your lights.
-
As of today ICMag has his own Discord server. In this Discord server you can chat, talk with eachother, listen to music, share stories and pictures...and much more. Join now and let's grow together! Join ICMag Discord here! More details in this thread here: here.
I've used 1 6" fan (467cfm) to cool 1-2 600watthps lights.. in both cases i had the fan mounted to one of the hoods and the other hood was linked by 4 inches of venting (including overlap to flange).. so my hoods are always close to the fan so there is high airflow over the bulbs.. my glass stays very very cool.. i wouldn't recomend anything less then 250cfm/1000watt. but i would recomend a lot more.. like 400
I've got 1 747 cfm cooling 1400 watts right now.
Last grow, I had 2kw, and had the fan speed controlled down to probably right at 200CFM.
I always use the rule of 100 CFM per 1000 watts, just to take your carbon filter and ducting flow losses into effect. If you think it through, I'm trying to pull hot air out of a 11"x4"x4" tube. At 100 CFM, I'm moving 7 times that much air per minute.
But as frozen says, it's better to get too much fan than too little.
Last grow, I had 2kw, and had the fan speed controlled down to probably right at 200CFM.
I always use the rule of 100 CFM per 1000 watts, just to take your carbon filter and ducting flow losses into effect. If you think it through, I'm trying to pull hot air out of a 11"x4"x4" tube. At 100 CFM, I'm moving 7 times that much air per minute.
But as frozen says, it's better to get too much fan than too little.
Im using This DIY mod with 2/400WT HPS with great results. I think its 250cfm. 
Albert Hofmann
Member
1 6" vortex per 2-1000hps
An 8" Hurricane pulling and an 8" Vortex pushing thru 4x1000 hoods....The Vortex is pulling air from a carbon filter...It,s workin great....no smell or heat..
I,ve had a lot of diff. fans but I swear by the Hurricane ..it,s made by Grotek I think or at least they distribute it..Quiet as hell and very powerful ....
jarff
I,ve had a lot of diff. fans but I swear by the Hurricane ..it,s made by Grotek I think or at least they distribute it..Quiet as hell and very powerful ....
jarff
SensiMilla024
Member
185cfm squirrel cage fan cooling a 400w HPS/MH
100 cfm axial fan for 252w CFL
I
In Vino Veritas
Great thread!
I have a 440CFM Can-Fan and matching scrubber. I wanted to have my [7x6x8 room]>[filter]>[fan]>[1k]>[1k]>[attic/exhaust]>>> I wasn't sure if this fan is enough?
I have a 440CFM Can-Fan and matching scrubber. I wanted to have my [7x6x8 room]>[filter]>[fan]>[1k]>[1k]>[attic/exhaust]>>> I wasn't sure if this fan is enough?
Albert Hofmann
Member
2k with a filter attached is going to be tough with that fan. It will be more efficient to go filter-1k-1k-fanIn Vino Veritas said:
Albert Hofmann
Member
I don't know the rest of your variables i.e temp of intake air, ambient temps around the space, ac, etc. It may work fine...with the adjustment to pulling rather than pushing. I made my statement based on my area (the summers get very hot!!). I run 2 1k hps through a 6" vortex with no filter and it works great, but I wouldn't wan't to reduce my flow anymore with a filter.
anyone have any experience with fantech? how many cfm's would it take to cool (1) 600whps and (1) 300whps/ (2) 150whps lamps, and flouros? refer to my thread if you're trying to get an idea of what i'm talking about...
http://www.icmag.com/ic/showthread.php?t=69094
ArcticBlast
http://www.icmag.com/ic/showthread.php?t=69094
ArcticBlast
Ray of Light
Member
I have 1400cfm main intake that splits into 3 rows with 3x600w in each row. Each row has its own 450cfm fan and another two 800cfm on the exaust (one behind the other to create some more pressure)
Alltogether power consumption for ventilation: 0.9kw.
Alltogether power consumption for ventilation: 0.9kw.
Ray of Light
Member
I am not sure but I think this should do...
www.google.com
enter: 670 cubic meter/hour in cubic feet/minute
result: 670 ((cubic meter) / hour) = 394.347112 (cubic feet) / minute
peace
www.google.com
enter: 670 cubic meter/hour in cubic feet/minute
result: 670 ((cubic meter) / hour) = 394.347112 (cubic feet) / minute
peace
Last edited:
Budweiser13
Active member
Ray of Light nice setup man do you really need that many fans is it because you have 3 lights in a row what if they were 1000 watters would you need bigger fans........ 
Ray of Light
Member
Thanks Budweiser13. Well... i rather have an overkill than not enough. Anyway. If I would do it again, I would cut out the 3 fans ... those for individual rows.... because that 1400cfm fan accualy blows your head off 
I
In Vino Veritas
Ray of Light said:Thanks Budweiser13. Well... i rather have an overkill than not enough. Anyway. If I would do it again, I would cut out the 3 fans ... those for individual rows.... because that 1400cfm fan accualy blows your head off
Damn, way overkill! I wonder if you're hindering the 1400 fan by having all those other fans in the way... Probably not? Very clean. How is that mitsu working out? Those splitters are the shizzle.
mister c, heh don't say that i'm about to try and cool off a 7x6x8 with 2x 1000's in it with a 440 can-fan set up.. No air cooled lights, the whole room out that 6"...
i see myself making a purchase really soon...
