Abstract
Open kitchen designs are found in small units in tall residential buildings of Asian-Oceania regions for better space utilization. As many combustibles are stored in small residential units, fire originated in the open kitchen can grow and spread fast. Consequently, flashover can occur to give a big fire and result in severe casualties and property damage. Nonlinear dynamics can be applied to predict critical heat release rate to flashover in the unit with an open kitchen and will be illustrated in this paper. Based on a two-zone model, temperature of the hot smoke layer was taken as the system state variable. An evolution equation was developed with selective control parameters. Onsetting of flashover using a nonlinear dynamical system was demonstrated in the example residential units. Effects of the floor dimensions, the radiation feedback coefficient and thermal properties of wall material on the onset of flashover were then examined and analyzed. The developed nonlinear dynamical model for studying the onset of flashover gives a better understanding of the various control parameters.
Highlights
The fire safety of tall buildings associated with smoke movement and control, big fire due to wind action, firefighting accessibility and long evacuation time should be watched in densely populated areas in the Asia-How to cite this paper: Chow, W.K. and Liu, J. (2016) Application of Nonlinear Dynamics in Studying Flashover Fire in a Small Open Kitchen
Fire hazards associated with open kitchen in small residential units of tall buildings storing large amount of combustibles should be watched
Critical heat release rate and temperature for onsetting flashover were predicted under various unit floor dimensions, radiation feedback and wall materials
Summary
The fire safety of tall buildings associated with smoke movement and control, big fire due to wind action, firefighting accessibility and long evacuation time should be watched in densely populated areas in the Asia-. (2016) Application of Nonlinear Dynamics in Studying Flashover Fire in a Small Open Kitchen. It is very important to study flashover due to open kitchen fire in small residential units in tall buildings. These models are typically based on simplified energy balance equations for a single compartment fire with the number of system state variables ranging from one to three Such an approach [15] [16] was updated and applied [18]-[20] to study flashover in an open kitchen fire as further illustrated in this paper. The nonlinear dynamics model developed will be used to predict the critical heat release rate necessary for the onset of flashover in a small unit with an open kitchen. The effects of geometry of the residential unit, wall materials and radiation feedback on the occurrence of flashover were examined
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