What is the main focus of the Ventilation Rate Procedure in ASHRAE Standard 62-1989?

The primary focus of the Ventilation Rate Procedure in ASHRAE Standard 62-1989 is to establish fixed ventilation rates necessary to achieve acceptable indoor air quality in occupied spaces. This procedure provides guidelines on how much outdoor air should be introduced into a building to dilute indoor air contaminants and ensure the health and comfort of occupants. By specifying these fixed rates, it addresses the energy use and operational feasibility of various ventilation strategies while emphasizing adequate air exchange.

In this context, being based on defined ventilation rates helps practitioners ensure compliance with health standards by allowing for a consistent method of assessing required airflow based on occupancy and space usage. This structured approach is critical for balancing adequate ventilation with energy considerations and indoor air quality.

Conversely, while factors like airflow direction, energy efficiency, and the elimination of indoor pollutants are important aspects in overall air quality management, they are not the main focus of this particular procedure within ASHRAE Standard 62-1989. The emphasis here is specifically on the established rates of ventilation, highlighting the importance of sufficient outdoor air flow as a foundation for achieving a healthy indoor environment.