【摘要】 结合长大隧道全比例火灾试验,介绍并分析了目前常用的3种火灾探测器在3种不同火源功率下进行火灾报警试验的过程和结果。根据报警响应时间,比较3种不同探测器在相同试验环境下的灵敏度,由温度变化曲线判断着火点位置情况来评价报警准确度,得出了火源功率的大小对报警响应时间的影响,为道路隧道火灾报警设备的选型提供参考。更多还原

【Abstract】 In a full scale fire test of long road tunnel with large section, three common used fire detectors were tested with three different fire heat release rates. The paper introduces the test process and its results. The sensitivity of each fire detectors is compared under the same testing condition according to the alarm response time. The accuracy of alarming is evaluated according to the location of fire source judged by the temperature curve. The effect of heat release rate on fire alarm response time is studied. The results could be used as a reference for the selection of fire alarm system in road tunnel.更多还原