|
CSME 2019/04
Volume 40 No.2
:
119-128
|
|
Predicting the Post-Flashover Temperature in a Compartment Fire Using Adiabatic Gas Temperature
Wei-Ting Chunga and Kuang-Chung Tsaia
aDepartment of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, Taiwan 811, ROC.
|
Abstract:
The temperature in a compartment fire is crucial for fire risk assessment because it affects the growth of a compartment fire, the structural behavior of construction elements, etc. A previous model for predicting the temperature, both before and after flashover, using adiabatic gas temperatures has been developed. This model for predicting the temperature after flashover uses a correlation of heat release rate (HRR) at flashover. However, this model has only been verified by experimental data before flashover. This study modified the expression of HRR at flashover, and verified by experiment in an enclosure whose dimension is one third of an ISO 9705 chamber. The opening of the enclosure was 0.8 m high, and with different widths of 0.1, 0.2 or 0.3 m for considering the ventilation-controlled fire behavior after flashover. Fuels used were gasoline and iso-propanol. Experimental data showed that this model using the alternative expression can better predict the temperature after flashover. Additionally, the type of flashover was discussed with the prediction of post-flashover temperature.
|
|
Keywords: Room temperature; compartment fire; adiabatic gas temperature.
|
Download PDF
|
|
*Corresponding author; e-mail:
|
©
2019
CSME , ISSN 0257-9731
|