基于H.D模型的感温火灾探测器选择与应用

Discussion based on H.D model about selection and application of heat fire detector

应用H.D模型计算并讨论了感温探测器在不同顶棚高度和火灾增长时间情况下的响应时间和安装间距。结果表明,随着顶棚高度增大,感温火灾探测器响应时间变长,必须减小安装间距;对于发展速度快的火灾,差温探测器响应快,安装间距大;对于发展速度较慢的火灾,定温探测器响应更快,安装间距大。结论对消防工程的安全评估和火灾报警系统的选型设计具有一定的参考意义。

Response time and required detector spacing of heat fire detectors in different ceiling height and fire growth time were calculated and discussed by using H. D model. The results showed that response time became longer and required detector spacing decreased when ceiling height increased; for fires that grew faster, the rate-of-rise heat detectors responsed faster and required detector spacing was larger; and for fires that grew slower, the fixed-temperature detectors responsed faster and a larger detector spacing was allowed. These results give refer- ence for safety assessments on fire engineering and selection de sign of fire alarm system.