Ghosting flame mechanism under different extinctions modes in ceiling vent cabin

2021 ◽  
Author(s):  
Lixin Cong ◽  
Mingfei Lu ◽  
Chaoyi Xu
Keyword(s):  
Ceiling Vent

Smoke Filling in a Confined Compartment with Single Ceiling Vent

2016 ◽  
pp. 783-791
Author(s):  
Qiang Li ◽  
Jinmei Li ◽  
Shijing Ren ◽  
Jiaqing Zhang
Keyword(s):  
Ceiling Vent ◽  
Smoke Filling

scholarly journals Investigation of the Burning Mechanism in an Enclosure Fire with a Horizontal Ceiling Vent

2016 ◽  
Vol 135 ◽  
pp. 1-11 ◽  
Author(s):  
An-qi Chen ◽  
Qiang Li ◽  
Yi-ge Wang
Keyword(s):  
Ceiling Vent ◽  
Enclosure Fire

Flame Stretching in a Room Model With Natural Vent

2009 ◽  
Author(s):  
W. K. Chow ◽  
S. S. Han ◽  
Y. Gao ◽  
H. Dong ◽  
Y. Huo ◽  
...  
Keyword(s):  
Short Note ◽  
Flame Length ◽  
Pool Fire ◽  
Scale Model ◽  
Ceiling Vent ◽  
Set Up ◽  
Room Model ◽  
Real Scale ◽  
Pool Sizes

Flame stretching in a room with a ceiling vent will be discussed in this short note. A real-scale model was constructed with a gasoline pool fire placed inside. Another pool fire of the same size and amount of fuel was burnt outside the model. Different pool sizes of diameters 0.07 m, 0.08 m, 0.11 m, 0.16 m and 0.2 m were set up. Volume of gasoline varied from 30 ml to 500 ml to give different burning durations. The flame lengths of the two fires were measured and compared. It is observed that the flame length of the pool fire inside the room was over 20% higher than that outside at the later stage of the fire.

scholarly journals Oscillating Behavior of Fire-induced Exchange Flow through a Horizontal Ceiling Vent

2016 ◽  
Vol 135 ◽  
pp. 299-308 ◽  
Author(s):  
Qiang Li ◽  
Jin-mei Li ◽  
Jia-qing Zhang ◽  
Chang Liu ◽  
Shi-jing Ren
Keyword(s):  
Exchange Flow ◽  
Flow Through ◽  
Ceiling Vent

scholarly journals Combustion phenomena of pool fire in a ceiling vent compartment: the vent right above the fire source

2018 ◽  
Vol 211 ◽  
pp. 358-364
Author(s):  
Jin-mei Li ◽  
Jia-qing Zhang ◽  
Qiang Li ◽  
Bo-si Zhang ◽  
Yang Jiang
Keyword(s):  
Pool Fire ◽  
Fire Source ◽  
Ceiling Vent

Modeling fire behavior in an enclosure with a ceiling vent

1993 ◽  
Vol 20 (2) ◽  
pp. 151-174 ◽  
Author(s):  
Cheok-Fah Than ◽  
Brian J. Savilonis
Keyword(s):  
Fire Behavior ◽  
Ceiling Vent

Fire Behavior in a Poorly Ventilated Compartment

2001 ◽  
Author(s):  
K. Wakatsuki ◽  
B. Ringwelski ◽  
J. G. Quintiere
Keyword(s):  
Mass Loss Rate ◽  
Video Recording ◽  
Fire Behavior ◽  
Differential Pressure ◽  
Pressure Transducers ◽  
Fire Experiment ◽  
Ceiling Vent ◽  
In Fire ◽  
Oxygen Fuel ◽  
Roof Temperature

Abstract The fire behavior of heptane burning in a poorly ventilated compartment was studied. The diameter of the heptane pan fires were varied and the ventilation opening size and location were adjusted. Two kinds of compartment fire experiment were conducted: (1) horizontal slits at the top and bottom of a wall, and (2) a single vent at the roof. Temperature, oxygen, fuel mass loss rate and differential pressure were measured. Extinction was studied with an oxygen meter to find the minimum oxygen concentration in the compartment achieved in ventilation-controlled fires. Extinguishments due to ventilation or complete fuel consumption was distinguished. Flow exchange was measured by differential pressure transducers. Particularly, flow exchange of ceiling vent was examined by calculation of flooding pressure difference, which will allow bi-directional flow. The wall vent case had oscillatory combustion (puffing), which sometimes leads to an increase in fire amplitude followed by extinction. This was not observed for the ceiling vent case. Video recording of the flame was conducted through a glass on sidewall. The fire behavior varied from conditions in which the flame extinguishes to cases of steady burning. In some cases, “ghosting flames” were observed.

ON DESIGNING HORIZONTAL CEILING VENT IN AN ATRIUM

2002 ◽  
Vol 11 (3) ◽  
pp. 229-254 ◽  
Author(s):  
J. LI ◽  
W. K. CHOW
Keyword(s):  
Ceiling Vent

Observations on Flame Stretching in a Room Model With Natural Vent

2008 ◽  
Author(s):  
W. K. Chow ◽  
C. K. Law
Keyword(s):  
Short Note ◽  
Flame Length ◽  
Pool Fire ◽  
Small Model ◽  
Ceiling Vent ◽  
Room Model

Flame stretching in a room with a ceiling vent will be discussed in this short note. A small model was constructed with a pool fire placed inside. Another pool fire of the same size and amount of fuel was burnt outside the model. The flame lengths of the two fires were measured and compared. It is observed that the flame length of the pool fire inside the model was higher than that outside. The value was even double at the later stage of the fire.

Sign in / Sign up

Export Citation Format

Share Document