TY - JOUR
T1 - Experimental investigation of externally venting flames geometric characteristics and impact on the façade of corridor-like enclosures
AU - Chotzoglou, Konstantinos
AU - Asimakopoulou, Eleni
AU - Zhang, Jianping
AU - Delichatsios, Michael
PY - 2018/11/14
Y1 - 2018/11/14
N2 - Understanding of the physics and mechanisms of fire development and externally venting flames (EVF) in corridor-like enclosures is fundamental to studying fire spread to adjacent floors in high-rise buildings. This work aims to investigate the burning behaviour of a liquid fuel pool fire in a corridor-like enclosure and to identify the key factors influencing EVF characteristics and its impact on façades. A series of experiments is conducted in a medium-scale corridor-facade configuration using ethanol pool fires. A new fuel supply system has been developed to keep the fuel level constant to minimize lip effects. The influence of fuel surface area and ventilation factor on the fire development is also investigated. Experimental measurements consist of mass loss, heat release rate, temperatures and heat fluxes inside the corridor and on the facade. Three distinct burning regions are observed and their characteristics depend on both the pan size and ventilation factor. A power dependence of EVF height in relation to excess external heat release rate has been found. The impact of EVF on the façade is investigated by measuring heat flux on the façade using thin steel plate probes. It is found that the characteristics of EVF strongly depend on opening dimensions and for large opening widths EVF tend to emerge from the opening as two separate fire plumes.
AB - Understanding of the physics and mechanisms of fire development and externally venting flames (EVF) in corridor-like enclosures is fundamental to studying fire spread to adjacent floors in high-rise buildings. This work aims to investigate the burning behaviour of a liquid fuel pool fire in a corridor-like enclosure and to identify the key factors influencing EVF characteristics and its impact on façades. A series of experiments is conducted in a medium-scale corridor-facade configuration using ethanol pool fires. A new fuel supply system has been developed to keep the fuel level constant to minimize lip effects. The influence of fuel surface area and ventilation factor on the fire development is also investigated. Experimental measurements consist of mass loss, heat release rate, temperatures and heat fluxes inside the corridor and on the facade. Three distinct burning regions are observed and their characteristics depend on both the pan size and ventilation factor. A power dependence of EVF height in relation to excess external heat release rate has been found. The impact of EVF on the façade is investigated by measuring heat flux on the façade using thin steel plate probes. It is found that the characteristics of EVF strongly depend on opening dimensions and for large opening widths EVF tend to emerge from the opening as two separate fire plumes.
KW - corridor-like enclosure
KW - façade fire
KW - flame height
KW - heat flux
KW - liquid pool fire
UR - http://www.scopus.com/inward/record.url?scp=85057565532&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1107/4/042023
DO - 10.1088/1742-6596/1107/4/042023
M3 - Article
AN - SCOPUS:85057565532
SN - 1742-6588
VL - 1107
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 4
M1 - 042023
ER -