Air Filter Sizing: Calculate Required Surface Area

[normynormand802]

TL;DR

Calculate surface area required for air filter for given flow rate

I have two filter materials and I have manufacturer-supplied pressure drops across the filters at given flow rates. I know the desired flow rate and the negative pressure "sucking" on the downstream side of the filter, and I want to calculate the required filter surface area for each filter material in order to supply the flow rate at the applied pressure. How do I set this problem up and which equations do I use?

 

[russ_watters]

I have two filter materials and I have manufacturer-supplied pressure drops across the filters at given flow rates. I know the desired flow rate and the negative pressure "sucking" on the downstream side of the filter, and I want to calculate the required filter surface area for each filter material in order to supply the flow rate at the applied pressure. How do I set this problem up and which equations do I use?

Pressure drop is a function of velocity. Just divide the airflow by the filter area for their recommended velocity and match it to your required flow rate.