1791 Tullie Circle NE, Atlanta, GA 30329 www.ashrae. The first step is calculating the Breathing Zone Outdoor Airflow. The breathing zone outdoor airflow (cfm), Vbz. The VRP first calculates the breathing-zone outdoor air flow rate based on two components the zone occupant component and the zone floor area component, then it calculates the zone supply outdoor air flow rate considering the zone air distribution effectiveness and secondary recirculation (for mult-path systems only), and finally calculates.
ISSN 1041-2336 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. the breathing zone based upon both occupant density and floor area. © Copyright 2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
BREATHING ZONE OUTDOOR AIRFLOW CALCULATION FREE
Telephone: 40 (worldwide), or toll free 1-80 (for orders in US and Canada). The latest edition of an ASHRAE Standard may be purchased from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. The VRP is the most commonly used procedure. Section 6.1 gives a basic definition for each procedure. The standard offers three options for calculation of minimum outdoor air. The change submittal form, instructions, and deadlines may be obtained in electronic form from the ASHRAE Web site,, or in paper form from the Manager of Standards. Section 6 addresses the procedures and calculations for calculating minimum outdoor airflow rates as well as the requirements for exhaust ventilation. the following (no less than the larger of): The amount of outdoor airflow required. The system outdoor airflow setpoint is determined by. The zone primary airflow rate to each zone is also measured to dynamically calculate system ventila-tion efficiency on a real-time basis. This standard is under continuous maintenance by a Standing Standard Project Committee (SSPC) for which the Standards Committee has established a documented program for regular publication of addenda or revisions, including procedures for timely, documented, consensus action on requests for change to any part of the standard. trations in breathing zones and/or occupancy states are measured. Charter and Administrative Code: Current through Local Law 2022/126, enacted December 23, 2022, and includes amendments effective through January 1, 2023. ANSI/ASHRAE Addenda g, r, and t to ANSI/ASHRAE Standard 62.1-2007 ASHRAE STANDARD Ventilation for Acceptable Indoor Air Quality Approved by the ASHRAE Standards Committee on Januby the ASHRAE Board of Directors on Januand by the American National Standards Institute on January 28, 2010.
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