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http://hdl.handle.net/10397/91473
| Title: | Sustainable smoke extraction system for atrium : a numerical study | Authors: | Ivanov, ML Peng, W Wang, Q Chow, WK |
Issue Date: | Jul-2021 | Source: | Sustainability, July 2021, v. 13, no. 13, 7406 | Abstract: | 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. | Keywords: | Atrium Mechanical ventilation Natural vent Numerical simulation Smoke extraction system |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Sustainability | EISSN: | 2071-1050 | DOI: | 10.3390/su13137406 | Rights: | © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Ivanov, M.L.; Peng, W.; Wang, Q.; Chow, W.K. Sustainable Smoke Extraction System for Atrium: A Numerical Study. Sustainability 2021, 13, 7406 is available at https://doi.org/10.3390/su13137406 |
| Appears in Collections: | Journal/Magazine Article |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| sustainability-13-07406-v2.pdf | 2.44 MB | Adobe PDF | View/Open |
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