Elementary Physics for you maybe?

[spidermanpcs]

I have a polyethylene cylinder exactly double the diameter and length of a toilet paper cardboard tube, attached inside the cylinder 3" from the topside of the cylinder I have a tightly secured round vented 10 Micron plastic carbon filter disc encompassing the entire inside diameter which only allows air to flow threw the filter , my question is "If I connect a small electric fan to push air UP threw the Cartridge filter will I get the same flow ratio opposed to drawing air DOWN threw the carbon disc filter? is one direction somehow more efficient? Should I use an Impeller or Propeller fan? I hope I have been clear in my description? I'm not even sure if I have a physics question here??

Thanks for your help, I do appreciate it.

 

[Valerie Park]

Your question is related to fluid dynamics, and in particular the flow of air through a filter. The direction of flow (up or down) should not affect the efficiency of the filter, as long as the fan is powerful enough to generate the necessary pressure. Depending on the power of the fan, an impeller or propeller fan may be more suitable.