HUANGXiao-jia,YANGShun,YAOWei-jie,et al.Simulation of Automatic Sprinkler Fire Extinguishing in Large Spaces with Clearance Height of 22 m and 30 m[J].China Water & Wastewater,2024,40(1):116-125.
Simulation of Automatic Sprinkler Fire Extinguishing in Large Spaces with Clearance Height of 22 m and 30 m
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第1期
Page:
116-125
Column:
Date of publication:
2024-01-01
- Keywords:
- large space; automatic sprinkler system; clearance height; operating temperature; spray intensity
- Abstract:
- This paper investigated the influence of sprinkler design on fire extinguishing performance of automatic sprinkler system in non-warehouse high-clearance places, simulated the automatic sprinkler fire extinguishing in the large spaces with clearance height of 22 m and 30 m by using fire dynamics simulation (FDS) software, and proposed the safe and reliable engineering design parameters. When the clearance height and operating temperature of the sprinkler were 22 m and 74 ℃, poor fire control performance was obtained, and the critical heat release rate of sprinkler starting was 6.9 MW. When the sprinkler operating temperature was 68 ℃, the fire could be controlled quickly, and the critical heat release rate of sprinkler starting was 6.2 MW. When the clearance height was 30 m, and the spray intensities were 55 L/(min·m2) and 50 L/(min·m2), the fire could be quickly controlled after the sprinkler was started. The decreasing spraying intensity increased the burning loss of fuel stacking, and it was fail to control the fire when the spray intensity was 45 L/(min·m2). Therefore, the spraying intensity of fast response sprinkler should not be less than 55 L/(min·m2) when the clearance height was 30 m.
Last Update:
2024-01-01