exhaust_fans

gr33dy_g3niu$

Active Member

• Apr 4, 2007

• #1

howmany
CFMdoes
myfan
needto
takeheatand
staleair
outof
an-1'x2'x1'area

 

videoman40

Well-Known Member

• Apr 4, 2007

• #2

depends on your light dude, go here:
https://www.rollitup.org/newbie-central/9190-how-cool-yr-grow-room.html#post82617

 

gr33dy_g3niu$

Active Member

• Apr 4, 2007

• #3

imusing
6-8-45watt
cfls
kinda-likethis
andthis
ismy
area

 

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videoman40

Well-Known Member

• Apr 4, 2007

• #4

To find how much the light will warm the room with a different size fan you can just use the formula. Just take the wattage of the light and multiply by 3.2. Then divide the CFM of the fan to find how much the room will warm in Fahrenheit degrees.

For instance:

If the temperature of the intake air is 75° and you’re using a 600 watt light, the temperature would go up 5° if you used a 384 CFM fan. So, the temperature would end up 80°.

(600 × 3.2) ÷ 384 = 5

5° + 75° = 80°

Peace

 

videoman40

Well-Known Member

• Apr 4, 2007

• #5

Dude, I'm not so sure about your CFL's, the math wasn't intended for them, and they dont get as hot, however....you do have a small space, I notice a small hole in the back, try making another hole up higher, and install a fan, blowing on exhaust, it'll pull new cooler air from the hole below. At this point its a matter of trial and error. I think you'll be fine though.
Peace

 

gr33dy_g3niu$

Active Member

• Apr 4, 2007

• #6

iwasplanning
on
attaching
an
ac
totheholein
the
back
to
keep
areacertain
temp.(will+that+work)
andtheholeonthetop
iwasgoingto
put
theexhaust
fanbutwont
theair
thats
leavingsmellso
iwanted
to
knowifitwas
agood
ideatoattach
exhaustto
carboncanister
likepic3
would-i-need
anymore-air-circulation-or-will-i-be-
goodtogo

 

gr33dy_g3niu$

Active Member

• Apr 4, 2007

• #7

this
is3rd-pic

 

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