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http://dx.doi.org/10.6110/KJACR.2011.23.2.139

Ventilation Performance According to Outdoor and Operating Conditions of the Vertical Exhaust Duct System in High Riser Public Houses  

Kim, Young-Bae (Graduate School of Energy & Environment, Seoul National University of Science and Technology)
Kim, Jae-Hong (Department of Mechanical Engineering, Seoul National University of Science and Technology)
Sung, Jae-Yong (Department of Mechanical Engineering, Seoul National University of Science and Technology)
Lee, Myeong-Ho (Department of Mechanical Engineering, Seoul National University of Science and Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.23, no.2, 2011 , pp. 139-146 More about this Journal
Abstract
The ventilation performance of a vertical exhaust duct system in the high riser public house has been evaluated by a commercial software, Fluid Flow, which solves pressure losses through the duct system including bathroom fans and a hybrid roof fan. During the numerical simulations, outdoor wind condition and stack effects in summer and winter were considered as well as the operating conditions of a basement damper and the roof fan. The results show that the bathroom ventilation in summer is the most unsatisfactory. The opening of the basement damper has a problem that the polluted air in the lower floors is exhausted to the underground parking lot, not to the rooftop. If the basement damper is closed, the exhaust flow rate in the lower floors is not sufficient due to the strong flow resistance in the long vertical duct even though the roof fan is under operating.
Keywords
Ventilation performance; Stack effect; Roof fan; Basement damper; Vertical exhaust duct;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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