缩尺度试验火烟气特性实验研究

Experimental study on smoke characteristics of reduced scale test fires

基于4种标准试验火开展缩尺度试验火烟气特性实验,研究试验火烟气特性在其尺度逐渐缩减过程中的变化规律,分析火灾烟气减光系数随时间的变化以及货架火灾探测器、吸气式感烟火灾探测器、点型感烟火灾探测器对各尺度试验火的报警响应特性。给出适用于高灵敏火灾探测器检测和评价的缩尺度试验火做法建议。

The experiments of smoke characteristics of the reduced scale test fires were carried out based on the 4 standard test fires.The change rule of smoke characteristics of test fire in the process of gradual reduction of its scale was studied and the change of the obscuration coefficient of fire smoke with time was analyzed.Alarm response characteristics of rack fire detector, inspiratory smoke fire detector and point smoke fire detector to test fire of various scales was analyzed too. Suggestions for fire test with reduced scale suitable for detection and evaluation of high sensitive fire detectors were given.