Exhaust fan/Carbon scrubber????

[Teh_Baker]

I was wondering if someone could recommend a small exaust fan, hopefully the size of a pc fan, that I can use in combination with a carbon scrubber I'm gonna make to fit. The thing is I just wanna make sure the fan will have enough power to pull/push air through the scrubber. Also was looking for a recommendation on the air flow: should I push or pull?
Just so you know the size of cab I'm working with the dem. are as follows:
36in T
30in W
20in D

Thanks in Advance

 

[MTF-Sandman]

You're not going to have alot of success trying to cool that area (with an appropriate sized light like a 250w) with PC fans...go with a 4" Vortex and a small scrubber and you'll be much happier with the results.

 

[SpacedCWBY]

Depending on the size of your space, a DIY carbon scrubber and a 6" inline duct booster from home dipshit, works great. I have a 80 cu foot cab and it works great. Can't smell a thing at the exhaust port.

If you need to use a PC fan, I would pull with it. You would probably only get away with a pad filter though. They're in the air cleaner aisle at home dipshit. Trimmable sheets. Work for TINy spaces and seedlings that may smell a bit funky.

There is a guy on ebay selling 4 or 6" axial (pc style) carbon scrubbers. Maybe adapt an idea from him. I wouldn't pay his price though.

Later.

 

[Teh_Baker]

anybody else have any input?

 

[willbeHigh]

any carbon srcubber diy or store bought are rated by cfm's.most srcubber need over 100 cfm's to work.The pc fans at best 35cfm.bigger is better up to a ponit.
Peace

 

[waydee]

My cab is 27.5w x 14d x 34t and I use a 125mm (5") inline fan and carbon filter, moves around 250m3/hr and is mated to a 240m3/hr carbon filter.

Filter is very small, squeezed into the cabinet no problem.

Of course its not under much strain, only cooling 220watts of mixed HPS/CFL, I figure it would be able to cool 300 or so no problem in that space, in a bigger cab it would be able to handle a 400watt no problem.


Its maybe a bit overkill, I need to get a speed controller for it because at full speed its definitely noticeable but i'd recommend the setup... of course I could have probably got the same effect by building something myself but the time and effort saved was worth the money. The filter is just a cheap model, designed to last a year or so, maybe longer in my case because it only has to filter the smell of a couple of plants.

I agree you'd struggle to find a pc fan that can push enough air to use one of these sorts of carbon filters, have a look on wormsway.com though - they sell a Can Carbon Filter 705 (if i remember correctly) rated at 37cfm or something... might be enough for your needs.

 

[alphacat]

Be careful of buying a fan rated for exactly the CFM rate you think you're going to need: buy one that's overpowered by at least 33-50% and leave it on ½ strength instead of the exact-rated one left on high all the time. Helps w/ temperatures, energy usage, and fan lifespan.

 

[Teh_Baker]

cool guys, thnx, im still gonna make my own scrubber, i think i might have found an inline fan at home dePOT.

 

[MTF-Sandman]

cool guys, thnx, im still gonna make my own scrubber, i think i might have found an inline fan at home dePOT.

If it's from HD, you found a duct booster fan...definitely not the same as an inline (like Vortex, Elicent, etc), but they can work for smaller setups if you oversize the fan.

 

[Teh_Baker]

not sure what brand it is, next time i go, ill look and post it.