| Author: | Li, Ronghe |
| Title: | A study on the effect of fire canopy on fire spread in multi-storey buildings |
| Advisors: | Huang, Xinyan (BSE) |
| Degree: | M.Eng. |
| Year: | 2020 |
| Subject: | Fire prevention Tall buildings -- Fires and fire prevention Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Building Services Engineering |
| Pages: | xi, 69 pages : illustrations (some color) |
| Language: | English |
| Abstract: | Nowadays, the multistory buildings with considerable functions spring up like mushrooms among with the development of the society. The increase of building function elevates the efficiency of building intelligence but the fire risk. Numerous facade fires have been reported in recent years all of the world, which poses the sever threaten to public safety. For example, the insulation materials installed on the building facade are prone to be ignited, which could accelerate the fire spread and enlarge the fire hazards. The fire canopy is a viable solution to mitigate the fire spread on the facade from the view of architecture structure design. This work employs the commercial software named Pyrosim to numerically investigate the effect of fire canopy on the upward spread characteristics of flame from outdoor to indoor in multi-story buildings. The adiabatic canopy width ranging from 0 m to 1m and height ranging from 2.7 m to 4.1 m with an interval of 0.2 m have been simulated. Results indicate that the fire canopy with 0.5 m width has limited effect on the propagation of compartment fire on the exterior wall, while the 1.0m wide fire canopy has excellent efficacy. Additionally, the effect of canopy height on the fire propagation to upper area is negligible. Moreover, the high temperature area under fire canopy increases with the height of fire canopy. In current simulation condition, the fire canopy with 1 m width could significantly restrict the fire spread, and it is an optimal option to install the fore canopy close to the upper eaves of the window as much as possible. The results would be of great significance to provide suggestion and safety guidance to the design of multi-stores building, in order to mitigate facade fire hazard. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 5333.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 2.94 MB | Adobe PDF | View/Open |
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