Author
Weiguang An
Bio: Weiguang An is an academic researcher from China University of Mining and Technology. The author has contributed to research in topics: Flame spread & Heat transfer. The author has an hindex of 5, co-authored 9 publications receiving 81 citations.
Papers
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TL;DR: In this article, the authors investigated the most dangerous fire in the underground utility tunnel is the integrated pipe gallery power cabin, which is mainly represented by cable fires, and used the FDS software to simulate the occurrence of cable fires.
46 citations
TL;DR: In this paper, a numerical simulation study was conducted to investigate temperature distribution and CO diffusion induced by cable fire in a L-shaped utility tunnel, and an equation was proposed to predict maximum temperature rise along the tunnel ceiling.
36 citations
TL;DR: In this article, experimental methods and theoretical analysis are employed to investigate effects of parallel curtain wall on downward flame spread characteristics of insulation materials on building facade, which is attributed to the competition of negative effect and positive effect of the curtain wall.
24 citations
TL;DR: In this paper, an experimental investigation on interlayer effect induced by curtain wall, parallel to the building exterior facade, on thermal and burning behavior of insulation material flexible polyurethane (FPU).
16 citations
TL;DR: Experimental methods are used to study flammability and flame-spread characteristics of PVC cable, and formulas concerning dimensionless flame height and single cable diameter (or total width of multiple cables) are obtained.
Abstract: Polyvinyl chloride (PVC) is widely applied in cables as insulation materials, which are vital for operation and control of industrial processes. However, PVC cables fires frequently occur, arousing public concern. Therefore, experimental methods are used to study flammability and flame-spread characteristics of PVC cable in this paper. Influences of cable structure and number are investigated, which is scanty in previous works. As cable core number of single cable or cable number of multiple cables rises, average flame height and width increase while the increment decreases. Formulas concerning dimensionless flame height and single cable diameter (or total width of multiple cables) are obtained. The former is negatively correlated with the latter. For single cable, convective heat transfer is dominant, and flame-spread rate decreases as cable core number increases. Cable maximum temperature, which drops first and then rises as cable core number increases, is observed in the cable core area. For multiple cable, the flame-spread rate increases as cable number increases. As the cable number rises, the length of pyrolysis and combustion zone increases while the maximum temperature of cable surface decreases. This work is beneficial to fire hazard evaluation and safety design of PVC cables.
7 citations
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TL;DR: In this article, 20 sets of full-scale water mist fire suppression experiments were conducted to examine the impacts of water mist system on smoke temperature characteristics, including water mist activation time (denoted by t), working pressure (P), k-factor (K) and longitudinal wind speed.
38 citations
TL;DR: In this paper, the influence of interlayer distance (d) and cable spacing (s) on flame characteristics and fire hazard of multilayer cables in utility tunnel has been investigated and the results show that large interlayer distances lead to higher flame height but lower flame width.
33 citations
01 Dec 2001
TL;DR: In this article, a comprehensive multi-phase fire safety research program is being conducted by the National Institute of Standards and Technology to demonstrate the practicality and effectiveness of heat release rate-based test methods and hazard analysis techniques when applied to passenger train fire safety.
Abstract: A comprehensive multi-phase fire safety research program is being conducted by the National Institute of Standards and Technology to demonstrate the practicality and effectiveness of heat release rate-based test methods and hazard analysis techniques when applied to passenger train fire safety. The results of Phase II of the program which focused on the application of hazard analysis techniques using heat release rate data and computer modeling to evaluate passenger rail car fire performance is presented. In addition to materials, the impact of car geometry, detection and suppression systems, and egress time on the safety of passengers and crew for representative intercity passenger coach, dining and sleeping railcar designs were evaluated.
33 citations
TL;DR: In this paper, a series of scaled fire tests were conducted in a model bifurcated tunnel to investigate the influence of ramp slope on fire behaviors of ethanol pool fire under natural ventilation.
31 citations
TL;DR: In this article, the effects of fuel bed width and spacing on the combustion and flame spread behaviors of discrete fuels were investigated. And a prediction model of the mass loss rate was developed, which agreed reasonably well with the experimental data.
24 citations