Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Temperature variation inside a corridor-like enclosure under limited ventilation
Highlights Fires in corridor-like enclosure with lateral openings were studied. Temperature profiles inside the enclosure with persistent flame ejection were analyzed. The effect of lateral opening conditions on temperature was obtained. Empirical models were developed to predict the maximum temperature and temperature decay profile.
Abstract This paper investigates the temperature variation inside a corridor-like enclosure (for example, high-speed train compartment) with persistent flame ejection through an opening (for example, window). The fire heat release rate and opening sizes are varied with 28 different experimental conditions. An exponential function is built and found to be able to describe the longitudinal temperature distribution, in which the decay rate has a power function with the window aspect ratio. The maximum temperature shows a considerable difference for various heat release rates (HRR), due to the mass flow rate of the fuel supply through the opening is comparable to or greater than the air mass inflow rate. A general model characterizing the longitudinal temperature distribution of various opening sizes and HRR is proposed with heat release to heat loss ratio inside the compartment, HRR and window aspect ratio, which shows a good agreement with the experimental results. This study provides important and new contributions over previous knowledge and has potential practical applications concerning the corridor-like enclosure fire safety and occupant evacuation.
Temperature variation inside a corridor-like enclosure under limited ventilation
Highlights Fires in corridor-like enclosure with lateral openings were studied. Temperature profiles inside the enclosure with persistent flame ejection were analyzed. The effect of lateral opening conditions on temperature was obtained. Empirical models were developed to predict the maximum temperature and temperature decay profile.
Abstract This paper investigates the temperature variation inside a corridor-like enclosure (for example, high-speed train compartment) with persistent flame ejection through an opening (for example, window). The fire heat release rate and opening sizes are varied with 28 different experimental conditions. An exponential function is built and found to be able to describe the longitudinal temperature distribution, in which the decay rate has a power function with the window aspect ratio. The maximum temperature shows a considerable difference for various heat release rates (HRR), due to the mass flow rate of the fuel supply through the opening is comparable to or greater than the air mass inflow rate. A general model characterizing the longitudinal temperature distribution of various opening sizes and HRR is proposed with heat release to heat loss ratio inside the compartment, HRR and window aspect ratio, which shows a good agreement with the experimental results. This study provides important and new contributions over previous knowledge and has potential practical applications concerning the corridor-like enclosure fire safety and occupant evacuation.
Temperature variation inside a corridor-like enclosure under limited ventilation
Xi, Yanhong (Autor:in) / Zhou, Zhihan (Autor:in) / Lian, Huanqiang (Autor:in) / Mao, Jun (Autor:in) / Chow, Wanki (Autor:in) / Tang, Fei (Autor:in)
25.04.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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