HUANG Xiao-jia,ZHAO Yao,XIE Shui-bo,et al.Numerical Simulation of Automatic Sprinkler in High Clearance Building[J].China Water & Wastewater,2020,36(17 17):6-12.
Numerical Simulation of Automatic Sprinkler in High Clearance Building
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
17 17
Page:
6-12
Column:
Date of publication:
2020-09-01
- Keywords:
- high clearance building; automatic sprinkler system; numerical simulation of physical object; standard burning item; sprinkler density; response time index
- Abstract:
- Based on the physical fire extinguishing experiment, the effect of different sprinkler density and response time index (RTI) on fire extinguishment in a high clearance building with the clearance of 18 m was explored by using FDS numerical simulation software. When the sprinkler density was 30 L/(min·m2), the automatic sprinkler system could suppress the fire quickly and effectively. When the sprinkler density was 20 L/(min·m2), the automatic sprinkler system could act in time or open multiple sprinklers to control the fire. When the sprinkler density was 15 L/(min·m2), water droplets could not reach the fuel surface directly due to the low sprinkler density. However, when more sprinklers were opened, the water was effective in wetting the combustibles around the burner and effectively controlled the fire. According to the numerical simulation of physical objects under different parameters, operating time of sprinkler, number of opening sprinklers, fire surppression time, overfire area, fire loss and system reliability were compared, and the design parameters of engineering application were proposed.It was suggested that the sprinkler density in high clearance building should be 20 L/(min·m2), and fast response of the sprinklers should be adopted.
Last Update:
2020-09-01