Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21257
Title: Experimental studies on the airflow characteristics of spaces with mechanical ventilation
Authors: Chow, WK 
Fung, WY
Issue Date: 1997
Publisher: American Society of Heating, Refrigerating and Air Conditioning Engineers
Source: ASHRAE transactions, 1997, v. 103, no. 1, p. 31-41 How to cite?
Journal: ASHRAE transactions 
Abstract: Ventilation in the occupied zone was studied experimentally in the waiting area of nine railway concourses in Hong Kong. The performance of the mechanical ventilation systems in those areas was also evaluated by studying the age of air, local air velocity, and carbon dioxide level. The results show that ventilation effectiveness may not necessarily be improved with increasing supply or extraction flow rate. The revised jet momentum numbers for those stations are also calculated and compared with the mean carbon dioxide concentration and the local age of air. It appears that this parameter can be used for evaluating the performance of the ventilation systems. A linear relation is fitted empirically to correlate the mean local age of air with the revised jet momentum number for the nine stations.
Description: Proceedings of the 1997 ASHRAE Winter Meeting, Philadelphia, PA, USA, 26-29 January 1997
URI: http://hdl.handle.net/10397/21257
ISSN: 0001-2505
Appears in Collections:Conference Paper

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