For a VAV (multiple-zone) system should the Design System Primary supply Airflow (Vpsd) sum up the total supply (and not the outdoor) air of each zone?

Dear all, Do centrifugal closed-circuit cooling towers have to comply with table 5-1, of ASHRAE 62.1-2007? In our project, the closest distance from the cooling tower to the DOAS is 6 meters (hor

IEQp1: Exhaust fans for public and private lavatories, kitchen, cafeteria and multiuse court Our project is a new school. The Design Final Review denied IEQp1 with two comments.

I am filing out the LEED documentation for IAQc1 for a Rec Center in St. Louis, MO. There is a Natatorium in this Rec with attached Locker/restroom/shower spaces.

Do we have to provide calculators for exhaust-only systems? GH

I am working on LEED boundary for Factory building. The factory has two buildings with common car parking but we are applying LEED certification for only building - 1.

Does anyone know if there is a LEED interpretation that allows exhaust-only ventilation in multifamily units under LEED-NC? Thanks!

Can the make-up air (CFM) provided for a kitchen hood exhaust system be considered as part of the total OSA CFM, in the VRP calculation?

I am conducting a survey in affiliation with University of Cincinnati for my Master's thesis which would take just 10-15 minutes of your time.