How to calculate AHU capacity from CFM

[lovey01384 (lovey)]

Dear Ankur Ji,

I have an AHU with 1300 CFM. With this AHU i have to supply air in change rooms, core areas. How I can calculate that thuis AHU is capable of taking that much load or not.

Please suggest !!!

[Ankur (Ankur Choudhary)]

Simply sum the required CFM (according to cleanliness class) of all rooms/areas.

[Sajjad_Ahmad]

[Sajjad_Ahmad]

[solankikishan885 (Er. Kishansinh Solanki)]

Agreed with @Sajjad_Ahmad sir

[Erry_W]

How about if the AHU has recirculation fan with different specification CFM (supply fan bigger then return fan),is the formula still works…?