Thermal Sensitivity of Wet-Type Fire Suppression Sprinklers System

摘要：

Automatic Fire Sprinkler Systems are reliable fire extinguishing systems when fires occur. This study analyzes the thermal sensitivity of sprinkler head in natural convection flow in order to assess efficacy of the equipment. This study uses the internationally renowned fire simulation software FDS to conduct simulation analysis, using the common indicator Response Tune Index to explore different distances to fire source, at 1.0 m, 2.1 m, 2.3 m, and 2.6 m respectively, and different installation heights at 10 cm, 20 cm, and 30 cm beneath the ceiling and directly under the ceiling. Result shows that while these same sprinkler heads have been installed according to regulations in Taiwan, but different installation heights beneath the ceiling result in different thermal sensing effects; the thermal sensitivity can differ up to 40 s, convective air flow can differ up to 3 times, and RTI value can differ up to two times. This shows that differences in air flow speed and heat transfer coefficient will influence the amount of time needed for sprinkler system heat sensor components. Based on results of this study, it can be known that the best place to install sprinkler heads is close to the ceiling or 20 cm from the ceiling, and 10 cm from the ceiling is not a very good place to install with the thermal sensitivity.

关键词： fire sprinkler head Response Time Index natural convection

作者: SU ChungHwei CHIANG ChinLung LIU JunHao CHIU YiPang

作者单位: Department of Fire Science,Wufeng Institute of Technology,Chiayi 62153,Taiwan,China Department of Industrial Safety and Health,Hung Kuang Institute of Technology,Sha-Lu 433,Taiwan,Chin

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 896-902

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）