Hello I am revisining a project of a hospital and changing the insulation of the walls from 0,063 feet to 0,52feet I get a very low reduction in heating and cooling (1%) needs, so I have suppose that the ventilation and the infiltrations in the building are over seized.

I have revise them and I have in the conditioned spaces 0,50 cfm/ft2 or Air Flow and 46,2 cfm/person.

It?s that too much? What is it exactly outdoor air?

I am eliminating the outdoor air from all the rooms because I think that outdoor air is the air that come from windows and infiltrations.

Thanks for answering

Mateo de Guadalfajara