Year-end Sale % OFF 
Abstract
ABSTRACTNatural ventilation involves low pressures, necessitating large interior ventilation openings (ventilators) with low airflow resistance in interior partitions, allowing required ventilation airflow. These ventilators are detrimental to the noise isolation between spaces. Design methods often use flow-rate-independent discharge coefficients, which rely on a high-Reynolds-number (Re) assumption. This paper evaluates this assumption for purpose-provided ventilators, based on theory, field measurement data and prediction. If a high-Re discharge coefficient is used to predict airflow at low Re, the flow rate will be over-predicted and the system under-designed. Reynolds numbers in some existing interior ventilators are low enough that flow rates are inaccurately described by a high-Re discharge coefficient. If the ventilator is highly restrictive to flow or if the hydraulic diameter of the flow path is very small, low-Re behaviour may be critical to system design.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
