How much air to cool 6kw of light. - Growroom Lighting - International Cannagraphic Magazine Forums

03-24-2006, 12:25 PM

I have a friend that is trying to setup a 6 - 1kw setup in a 10x12 room. He is using some eurogrowers and is in a commercial building. He has a large building and can pretty much cut holes in whatever. How much air would it take and how should he setup his room and reflectors to air cool his reflectors and the room?

BTW, he also mentioned he wants to do it the cheapest way possible, lol.

03-24-2006, 12:59 PM

I use 63,000 btu in a 15x 15 room with almost 11,000 watts. Thats over 5 tons of cooling and 2 swamp coolers to help moisten the dry air from the 2 AC units. I run a sealed room with split unit type ac units that don't exhaust any air. I use a large co2 generator with lp gas so that adds heat.
So i think 30,000 btu or a Large window unit or 3 each 12,00 btu portable units would work.
MOD

03-25-2006, 01:56 AM

Thanks, but what I was looking for was how big of a centrifugal fan in cfm would i need to actively vent the room with to keep it at a manageable growing temperature?

Without a/c.

Zamboni Driver · 03-25-2006, 02:04 AM

wothout a/c?
a shitload

i think one 6 " vortex 440 cfm will cool two 1k hps

but i think your friend should seriously consider the a/c's

HYDRO KING · 03-25-2006, 02:28 AM

200 cfm per One thousand watt hps/mh.

You need a fan for 6 - 1k watts

10" Fantech FKD Inline Fan w/cord - 1266 cfm

NiteTiger · 03-25-2006, 05:19 AM

Cool tubed 1kw lights can be effectively cooled with 100 CFM, depending on the effeciency of your ducting. Given the backpressure most growers create in thier systems, I'd go 250 CFM, just to be sure.

Air conditioning is generally calculated with 3500 BTU per 1kw light.

Basically just restating the good information you've already been given in simpler terms.

whoamI?whoRu! · 04-05-2006, 11:42 PM

Without AC or cooled hoods...a 1200+ CFM blower. Ideally, you'll be pulling/pushing thru two CAN100 sized filters, plus(not so ideally) some length of ducting. So you end up moving a lot less than the rated 1200+...but should be ok until outside temps get around 27-30*C or higher.

senseless · 04-26-2006, 04:38 AM

[quote=NiteTiger]
Air conditioning is generally calculated with 3500 BTU per 1kw light.

QUOTE]

what if the 1kw light is inside a cooltube?

thanks.

Darkness · 04-26-2006, 04:52 AM

Chodo do a 10" or 12" vortex, it'll take care of your heat issues if they are used with cool tube reflectors!!

Mampi · 04-26-2006, 07:02 PM

Chodo if you got a minute read these cached OG links from R2k aka ranger2000. His ventilation knowledge never steered me in the wrong direction.

There a simple formula he uses/devised and this thread has all the information you should need in these 2 pages....

https://72.14.207.104/search?q=cache:...k&ct=clnk&cd=1

https://66.249.93.104/search?q=cache:...k&ct=clnk&cd=2

03-24-2006, 12:25 PM	#1
Guest Guest Posts: n/a	How much air to cool 6kw of light. I have a friend that is trying to setup a 6 - 1kw setup in a 10x12 room. He is using some eurogrowers and is in a commercial building. He has a large building and can pretty much cut holes in whatever. How much air would it take and how should he setup his room and reflectors to air cool his reflectors and the room? BTW, he also mentioned he wants to do it the cheapest way possible, lol.
	Quote

03-24-2006, 12:59 PM	#2
Guest Guest Posts: n/a	I use 63,000 btu in a 15x 15 room with almost 11,000 watts. Thats over 5 tons of cooling and 2 swamp coolers to help moisten the dry air from the 2 AC units. I run a sealed room with split unit type ac units that don't exhaust any air. I use a large co2 generator with lp gas so that adds heat. So i think 30,000 btu or a Large window unit or 3 each 12,00 btu portable units would work. MOD
	Quote

03-25-2006, 01:56 AM	#3
Guest Guest Posts: n/a	Thanks, but what I was looking for was how big of a centrifugal fan in cfm would i need to actively vent the room with to keep it at a manageable growing temperature? Without a/c.
	Quote

03-25-2006, 02:04 AM	#4
Zamboni Driver Member Join Date: Feb 2006 Posts: 207	wothout a/c? a shitload i think one 6 " vortex 440 cfm will cool two 1k hps but i think your friend should seriously consider the a/c's
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03-25-2006, 02:28 AM	#5
HYDRO KING Member Join Date: Mar 2006 Posts: 131	200 cfm per One thousand watt hps/mh. You need a fan for 6 - 1k watts 10" Fantech FKD Inline Fan w/cord - 1266 cfm __________________ If it wasn't for the Grandaddy smokin!! You know what I mean fo sho.. Last edited by HYDRO KING; 03-25-2006 at 02:30 AM..
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03-25-2006, 05:19 AM	#6
NiteTiger Tiger, Tiger, burning bright... Join Date: May 2005 Posts: 4,256	Cool tubed 1kw lights can be effectively cooled with 100 CFM, depending on the effeciency of your ducting. Given the backpressure most growers create in thier systems, I'd go 250 CFM, just to be sure. Air conditioning is generally calculated with 3500 BTU per 1kw light. Basically just restating the good information you've already been given in simpler terms. __________________ *Remember - Every 'elite' started off as someone's bagseed* kingjobber - This hash just uncentered my chi Growing cannabis is only as complicated and expensive as you want it to be. Current Grow: Knowledge Guides: Diatomaceous Earth - The Best Pesticide You've Never Heard Of Pontiac's DIY Link-O-Rama Unofficial Glossary for New Growers The Water Cure- How, when, and why How to remove 'HPS Orange' quick and easy!
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04-05-2006, 11:42 PM	#7
whoamI?whoRu! New Member Join Date: Apr 2006 Posts: 22	Without AC or cooled hoods...a 1200+ CFM blower. Ideally, you'll be pulling/pushing thru two CAN100 sized filters, plus(not so ideally) some length of ducting. So you end up moving a lot less than the rated 1200+...but should be ok until outside temps get around 27-30C or higher. Last edited by whoamI?whoRu!; 04-05-2006 at 11:44 PM..*
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04-26-2006, 04:38 AM	#8
senseless POTHEAD Join Date: Sep 2005 Location: the magical forest of marijuana Posts: 556	[quote=NiteTiger] Air conditioning is generally calculated with 3500 BTU per 1kw light. QUOTE] what if the 1kw light is inside a cooltube? thanks. __________________ medical marijuana patient/caregiver in compliance with CA. Prop. 215. Round 1 OG Kush: BioTubs: Harvested Round 2 OG Kush: BioBuckets: Failure Round 3+4 Soil OG kush, Blueberry kush, Grapefruit: Watch Me Grow the Dank! “This country, with its institutions, belongs to the people who inhabit it. Whenever they shall grow weary of the existing government, they can exercise their constitutional right of amending it, or their revolutionary right to dismember or overthrow it.” Abraham Lincoln First Inaugural Address
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04-26-2006, 04:52 AM	#9
Darkness Member Join Date: Feb 2006 Posts: 35	Chodo do a 10" or 12" vortex, it'll take care of your heat issues if they are used with cool tube reflectors!!
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04-26-2006, 07:02 PM	#10
Mampi Member Join Date: Aug 2004 Location: None of ya business ya nosy bugger! Posts: 468	Chodo if you got a minute read these cached OG links from R2k aka ranger2000. His ventilation knowledge never steered me in the wrong direction. There a simple formula he uses/devised and this thread has all the information you should need in these 2 pages.... https://72.14.207.104/search?q=cache:...k&ct=clnk&cd=1 https://66.249.93.104/search?q=cache:...k&ct=clnk&cd=2
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