Grow Room Question regarding negative pressure in PC case for carbon filter

[Seshwan]

Hi all,

Looking for some advice on negative pressure with regards to a carbon filter.

I am aware that there needs to be negative pressure inside the case in order for the carbon filter to work. It is my understanding that you create this negative pressure by having more exhaust than intake.

My plan was to have 1 intake fan and 2 exhausts however I don't think I can do that due to the proximity of both exhausts not leaving enough space for me to add carbon filters to BOTH of them..

My question is would I still be able to create negative pressure if rather than having 2 separate exhausts in 2 separate spots could I just make my carbon filter and have both the exhausts stacked ontop of each other both pulling air though the same carbon filter?

Thanks in advance!

 

[Simplicio]

Hi all,

Looking for some advice on negative pressure with regards to a carbon filter.

I am aware that there needs to be negative pressure inside the case in order for the carbon filter to work. It is my understanding that you create this negative pressure by having more exhaust than intake.

My plan was to have 1 intake fan and 2 exhausts however I don't think I can do that due to the proximity of both exhausts not leaving enough space for me to add carbon filters to BOTH of them..

My question is would I still be able to create negative pressure if rather than having 2 separate exhausts in 2 separate spots could I just make my carbon filter and have both the exhausts stacked ontop of each other both pulling air though the same carbon filter?

Thanks in advance!

You shouldn't need and intake fan at all.
For growing purposes, air is an incompressible fluid like water, and whatever air gets exhausted must've also been sucked in by the exhaust fan.
Whether you can hook 2 exhaust fans in series with each other and with the filter is best answered thru trial and error. My guess is that you can.
You might even consider hooking all 3 fans in series as exhaust fans if needed.

 

[Seshwan]

You shouldn't need and intake fan at all.
For growing purposes, air is an incompressible fluid like water, and whatever air gets exhausted must've also been sucked in by the exhaust fan.
Whether you can hook 2 exhaust fans in series with each other and with the filter is best answered thru trial and error. My guess is that you can.
You might even consider hooking all 3 fans in series as exhaust fans if needed.

Thanks man, really appreciate the response. after doing some reading it seems that a passive intake would work fine with the space I have. I will just make sure to cover the intake hole with a dust filter to stop most of the crap getting sucked in.

Thanks again for your help