Wind action on natural smoke exhaust in atria

Chow, Wan Ki; Li, J.

doi:10.1016/j.jocs.2018.09.001

Cited by 5 publications

(2 citation statements)

References 21 publications

(25 reference statements)

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“…There are many construction projects with big atria while developing sustainable urban areas in the Asia-Oceania regions since 1980s [1][2][3][4][5][6][7]. The Greater Bay Area, which includes nine cities in Guangdong, Hong Kong and Macao, is a very good example [8].…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Smoke Extraction System for Atrium: A Numerical Study

et al. 2021

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Smoke extraction systems, either static with natural ventilation, or dynamic with mechanical ventilation are required to keep smoke layer at high levels in many tall atria. It is observed that a design fire with high heat release rate (HRR) is commonly used for designing natural vents, but a low HRR is used for mechanical ventilation system. This will not produce a sustainable environment. There are no internationally agreed on design guides to determine the HRR in the design fire for different extraction systems and scenarios. This issue will be studied using a Computational Fluid Dynamics (CFD)-based software, the Fire Dynamics Simulator (FDS) version 6.7.1. Simulations on natural smoke filling, static and dynamic smoke extractions were carried out in a big example atrium. CFD-FDS predictions were compared with previous full-scale burning tests. Results confirmed that static smoke extraction is a good option for big fires, and a dynamic system is best for small fires. A sustainable new hybrid design combining the advantages of static and dynamic systems is proposed, which could result in a lower smoke temperature and higher smoke layer interface height, indicating a better extraction design.

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Section: Introductionmentioning

confidence: 99%

“…The Greater Bay Area, which includes nine cities in Guangdong, Hong Kong and Macao, is a very good example [8]. Many of buildings with large atria [1][2][3][4][5][6][7]9] have been constructed or planned [8]. It is required that fire safety provisions have to be installed for crowded atria.…”

Section: Introductionmentioning

confidence: 99%