Influence of Stairwell Ventilation State on Fire Behavior and Smoke Temperature Distribution in a Full-scale High-rise Building

J J He; J Zhang; X Y Ning; J Wang; R K K Yuen

doi:10.1088/1755-1315/813/1/012008

Author(s)

J J He
J Zhang
X Y Ning
J Wang
R K K Yuen

Related Research Unit(s)

Department of Architecture and Civil Engineering

Detail(s)

Original language	English
Article number	012008
Journal / Publication	IOP Conference Series: Earth and Environmental Science
Volume	813
Online published	30 Jul 2021
Publication status	Published - 2021

Conference

Title	2021 11th International Conference on Renewable and Clean Energy, ICRCE 2021
Place	Japan
City	Shiga
Period	26 - 28 February 2021

Link(s)

DOI	DOI https://doi.org/10.1088/1755-1315/813/1/012008 Final Published version
	Check@CityULib
Attachment(s)	Documents 82273804.pdf Final Published version, 1.06 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY 3.0. https://creativecommons.org/licenses/by/3.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85112458332&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(9594c7f3-5d06-407f-88ca-b994ce04cb56).html

Abstract

In this study, a set of experiments were carried out in a 21-story full-scale building varying stairwell ventilation state to investigate the fire behavior and smoke temperature distribution in the stairwell. Results demonstrate that the ventilation state of top vents has a great influence on the fire behavior and smoke temperature distribution than the bottom vents. The flame inclines to the stairwell with top vents open during the steady stage, while with top vents closed, it just tilts slightly to the side wall. The mass loss rates and temperature attenuations with top vents closed are larger than those with top vents open. In addition, the open of bottom vents can cause a reduction in the smoke temperature. These unique full-scale experiments provide crucial experimental data that help the design of safer smoke ventilation systems for stairwells in a high-rise building.