Abstract
Empty space could be ventilated continuously to keep some level of Indoor Air Quality (IAQ) in order to eliminate or minimize accumulation of pollutants, and to reduce odors in the air channels or in enclosed spaces. With the exception of some applications, such as hospital rooms where air is supplied to create a positive pressure, such an air amount that can be used for empty space ventilation can be taken as the minimum air supply that has to be provided at all times. Any additional air supply to the conditioned space is primarily for respiration purposes. This respiration amount has a minimum based on ;i per person oxygen need, and an additional amount to dilute whatever pollutants are present in the conditioned space, as defined by standards, codes, and regulatory aerosol concentration limits. This paper discusses and defines the minimum air supply, the respiration air need, and the dilution terms. It combines these terms into a basic air supply equation to serve IAQ criteria. The approach can be used as a practical guideline for the designer to calculate the total air supply needs to a conditioned space.
