Ventilation question

W

wandrew640

Member
Okay, probably a stupid question. Buuut, if I put a 6 inch fan with a filter on it on a 4 inch PVC pipe about ten ft long, would I be able to get slightly more cfm through it than with the 4 inch fan? I'll have an 11x6x80" room with two 3x3s in it, they will have a 4 inch fan and filter pulling from both of them exhausting into the 11x6. Then I want the 11x6 venting outside via an existing 4 inch PVC pipe. Can I do it? How? Please help
 
JoeBlow5823

JoeBlow5823

Well-Known Member
wandrew640 said:
Okay, probably a stupid question. Buuut, if I put a 6 inch fan with a filter on it on a 4 inch PVC pipe about ten ft long, would I be able to get slightly more cfm through it than with the 4 inch fan? I'll have an 11x6x80" room with two 3x3s in it, they will have a 4 inch fan and filter pulling from both of them exhausting into the 11x6. Then I want the 11x6 venting outside via an existing 4 inch PVC pipe. Can I do it? How? Please help
Click to expand...
Yes you should get more air through it. How much? Not sure.
 
JoeBlow5823

JoeBlow5823

Well-Known Member
wandrew640 said:
Okay, probably a stupid question. Buuut, if I put a 6 inch fan with a filter on it on a 4 inch PVC pipe about ten ft long, would I be able to get slightly more cfm through it than with the 4 inch fan? I'll have an 11x6x80" room with two 3x3s in it, they will have a 4 inch fan and filter pulling from both of them exhausting into the 11x6. Then I want the 11x6 venting outside via an existing 4 inch PVC pipe. Can I do it? How? Please help
Click to expand...
Two 3x3s shouldnt require all that much ventilation.
 
Renfro

Renfro

Well-Known Member
If you use a centrifugal style fan it will do a lot better against the restriction than a mixed flow or axial fan.
 
Renfro

Renfro

Well-Known Member
If there is a dryer vent on the outside of the 4 inch pipe then it will probably offer the most restriction. Either way, you will take a big hit in CFM.
 
W

wandrew640

Member
It's an open 4 inch pvc pipe. On that driver should be around 160w each at the wall. They're badass and dimmable, planning on mounting drivers outside of the tents to help manage heat
 
W

wandrew640

Member
Well that will change depending on what the plants like but I guess the potential would prob be 960ish between the two which now that I say it is way too much haha but each driver is supposed to be good for 320ish and I'll have 3 drivers with 6 panels
 
JoeBlow5823

JoeBlow5823

Well-Known Member
wandrew640 said:
Well that will change depending on what the plants like but I guess the potential would prob be 960ish between the two which now that I say it is way too much haha but each driver is supposed to be good for 320ish and I'll have 3 drivers with 6 panels
Click to expand...
Thats not very much shouldnt be to hard to cool.
 
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