will this carbon filter work?

Technocity · Jun 28, 2013

if my understanding of how carbon scrubbing works, as long as the air is being pulled through the carbon only, there will be no smell.
the space is 2 x 1 x 1 feet. The fan pulls at 78 CFM which I guess is 1 1/4 feet per second. Is this enough to "get the job done" as it were? I'm guessing it would because it pulls all the air out of the box in only 2 seconds.
how much air should I be pumping back into the cab?
...
Materials used will be:
1. duck tape
2. small pvc
3. pvc right angle joint
4. pvc cap
5. leggings
6. activated carbon

The amount of activated carbon would be only an inch and a half or so deep, with holes in both the cap and the lowest part of the pvc joint. This small amount is used because the fan that is being used is pretty weak (a moderately powered computer fan).

I may substitute pvc for an aluminum can, pencil basket and a pipe clamp, but the same theory I think applies.

Thanks for the help in advance.

that guy over there · Jun 29, 2013

I can see you needing to upgrade your fan, i started with a 36cfm 90mm pc fan and couldnt pull through the carbon filter i made so i tried stacking two of them together and that still didnt work. Yesterday i adapted a 122cfm 140mm pc fan and managed to get it flowing. Another thing to pay attention to is the pressure rating of your fan, if it has a low pressure rating thats not going to help, unfortunately most fans dont list a pressure rating.

It really is a matter of making it and seeing if it works, the less ducting and corners the air has to travel around the better too.
Give it a go and maybe it will work fine but be prepared to make some changes to the system to tweak it

lamopa · Jul 19, 2013

Technocity said:
View attachment 2717666

if my understanding of how carbon scrubbing works, as long as the air is being pulled through the carbon only, there will be no smell.
the space is 2 x 1 x 1 feet. The fan pulls at 78 CFM which I guess is 1 1/4 feet per second. Is this enough to "get the job done" as it were? I'm guessing it would because it pulls all the air out of the box in only 2 seconds.
how much air should I be pumping back into the cab?
...
Materials used will be:
1. duck tape
2. small pvc
3. pvc right angle joint
4. pvc cap
5. leggings
6. activated carbon

The amount of activated carbon would be only an inch and a half or so deep, with holes in both the cap and the lowest part of the pvc joint. This small amount is used because the fan that is being used is pretty weak (a moderately powered computer fan).

I may substitute pvc for an aluminum can, pencil basket and a pipe clamp, but the same theory I think applies.

Thanks for the help in advance.

Sure but for the time and money why not just get something like this and fill the container with activated carbon. It is what I use and it works fine. My 4 in. exhaust fan vents right into it:

http://www.acehardware.com/product/index.jsp?productId=1273083&cp=19702286.1260771

will this carbon filter work?

Technocity

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that guy over there

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lamopa

Active Member

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