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 pong
 
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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 what kind of ventilation do i need?!?! 
#141775 - 11/06/08 03:46 PM (16 years, 5 months ago) |
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i need to build a grow closet.
i am thinking that my grow closet will not have volume more than 75 cubic feet
will a system of ventilation built from these parts be sufficient?
this means that i will need at least 250cfm of airflow.
is this system too much or just right?
http://www.htgsupply.com/viewproduct.asp?productID=52609
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MARIJUANNNANNANNNANNNANNNANNANNANNNNNANANANAAAAAAAAA!!!!
MY GROW
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lopan
Registered: 09/24/08
Posts: 114
Last seen: 13 years, 11 months
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Re: what kind of ventilation do i need?!?! [Re: pong]
#141855 - 11/06/08 07:47 PM (16 years, 5 months ago) |
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My understanding is that, you should replace the air in the room (at least?) every five minutes. That being said, in a 75cf room, you'd only need a fan capable of 15cfm?
So, that system should be plenty sufficient.
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pong
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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Re: what kind of ventilation do i need?!?! [Re: lopan]
#141966 - 11/06/08 10:54 PM (16 years, 5 months ago) |
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my understanding is that if you are in a small room you need to replace faster. at least 3 times per minute
i am going to be in a small place with hid lighting.
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pong
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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Re: what kind of ventilation do i need?!?! [Re: pong]
#144279 - 11/13/08 12:56 AM (16 years, 4 months ago) |
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bump!!!!
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MARIJUANNNANNANNNANNNANNNANNANNANNNNNANANANAAAAAAAAA!!!!
MY GROW
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 Dr. Penguin
Registered: 05/19/08
Posts: 1,036
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Re: what kind of ventilation do i need?!?! [Re: pong]
#144304 - 11/13/08 06:14 AM (16 years, 4 months ago) |
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Small spaces heat up more quickly thus need to be exchanged faster. I use a 170cfm inline for about the same cubic foot space and a 400w hid. So the parts you have listed should be fine for a 250w. That said, if you go this route, consider buying or building a fan speed controller. If noise is an issue, they can be a big help.
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pong
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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Re: what kind of ventilation do i need?!?! [Re: Dr. Penguin]
#144394 - 11/13/08 04:12 PM (16 years, 4 months ago) |
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is that 170 cfm putting air through a filter?
so i am planning on using 400w hid
and i have a similar room size
so i should get a 170 cfm fan?
does this one look good?
whats the consensus on these?
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MARIJUANNNANNANNNANNNANNNANNANNANNNNNANANANAAAAAAAAA!!!!
MY GROW
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pong
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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Re: what kind of ventilation do i need?!?! [Re: pong]
#144399 - 11/13/08 04:31 PM (16 years, 4 months ago) |
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oh and will the fan above be good for this
Max cfm: 200/350m³h
@ 0.1 sec contact time
Recommended Min Airflow: 100 cfm
Prefilter: Yes
Flange: 6 & 8"
Dimensions: (with pre-filter)
·Outside Diameter: 305mm/12"
·Height: 330mm/13"
·Total Weight: 11.5kg/25.3lbs.
·Carbon Weight: 7.5kg/16.5lbs.
·Carbon Bed Depth: 50mm/2"
Max Operating Temp: 80ºC
Pressure drop at max cfm: 180pa/. 75wg
and this
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MARIJUANNNANNANNNANNNANNNANNANNANNNNNANANANAAAAAAAAA!!!!
MY GROW
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Stoneth
D.I.L.L.I.G.A.F.
Registered: 10/06/08
Posts: 25,088
Loc: No where ville, USA 
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Re: what kind of ventilation do i need?!?! [Re: pong]
#144488 - 11/13/08 07:20 PM (16 years, 4 months ago) |
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It all sounds good I personally have worked with less. But right is might.
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pong
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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Re: what kind of ventilation do i need?!?! [Re: Stoneth]
#144524 - 11/13/08 08:35 PM (16 years, 4 months ago) |
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so u think the inline duct fan of 250cfm the filter and the cooltube will work well together? awesome!!!
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MARIJUANNNANNANNNANNNANNNANNANNANNNNNANANANAAAAAAAAA!!!!
MY GROW
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Dr. Penguin
Registered: 05/19/08
Posts: 1,036
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Re: what kind of ventilation do i need?!?! [Re: pong]
#144984 - 11/15/08 01:36 AM (16 years, 4 months ago) |
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Absolutely not! That fan you posted is a duct booster fan, not at all able to handle the static pressures required by a carbon scrubber. That fan will push 0-10cfm while under the load of the scrubber. The type of fan you want is an inline centrifugal fan, some suggested manufactures are: Vortex, Can Fan, and Econoline inline fans. You can also use squirrel cage blowers but they are harder to attach to ducting properly. These fans, while a bit more expensive, will save you a world of hurt in the long run.
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pong
Registered: 05/01/08
Posts: 548
Last seen: 15 years, 1 month
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Re: what kind of ventilation do i need?!?! [Re: Dr. Penguin]
#145156 - 11/15/08 03:58 PM (16 years, 4 months ago) |
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ok so can fan it is.
and a can filter too!
hella bils though. but weed is gold so w/evs
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MARIJUANNNANNANNNANNNANNNANNANNANNNNNANANANAAAAAAAAA!!!!
MY GROW
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