How can I find ventilation values?

Normally we measure the air flow supply of thre room multifly the CFMX60 per hour, a changing CFM  into  Cufeet Per hour CFH ,Then Calculate the volume of the room by multiflying the room HXWXL, then simply divide the CFH the volume of the room

Example: CFH =300CFMX60min=1800

                     =8'x7x10=560

                     =1800/560 

                     =3.214

Ventilation air can be designed as per ASHRAE 62.12010 for clean rooms.

Ventilation is intentional introduction of air from the outside into a building; it is further subdivided into natural and mechanical ventilation.

As per ASHRAE 62.1-2013,TABLE 6.2.2.1 Minimum Ventilation Rates in Breathing Zone mentioned details accordingly we have to find out the ventilation values (Please refer below the formula).

Example :

Ventilation Values = (People Outdoor Air Rate X No of people) + ( Area Outdoor X total ventilated room area)

in ahu input from hap programm you can seeinfil & vent as attached picture

First, you must specify the application, then go to tables  like in  Ashrae .1 &.2 to find the right value

ventilation two types determine any one - natural or forced.

example-total exhaust=6ACH 

Ventilation(V)=Volume x 6/60

                    =......CFM

FOR WHICH VENTILATION ,SIR