格栅类吊顶喷头设置位置对灭火性能的影响

Effect of the setting position of nozzle on fire extinguishing performance with grid ceiling

设置不同位置的喷头进行灭火性能实体试验,针对不同层高的建筑对火源上方竖向温度变化进行数值模拟研究,得到喷头及时响应的建议设置高度,研究格栅类吊顶场所喷头的灭火性能。研究结果表明:对于设置格栅吊顶的场所,合理设置喷头的高度对于喷头的及时响应起着十分关键的作用。当格栅设置在一定的高度时,选择在格栅下方设置喷头的可靠性优于在格栅上方设置喷头。

Fire extinguishing performance of grid ceiling sprin- kler placed at different height was researched by fire extinguis hing performance tests. The vertical temperature change above the fire was simulated with different floor height. The suggested height of nozzle was obtained and the fire extinguishing performance of nozzle in grid ceiling place was researched. The resuits showed that for the grille ceiling space, a reasonable height of sprinkler nozzle is important to the response of nozzle. When the grid is provided at a certain height, reliability of set ring the nozzle below the grid is better than setting the nozzle above the grid.