公共建筑通风空调系统聚积物燃烧特性研究

Research on accumulation and combustion in ventilation systems of public buildings

为了解公共建筑通风空调系统中聚积物燃烧特性,选取办公楼、餐厅、地下车库等数栋建筑,对其通风管道及设备部件表面附着的聚积物进行现场采样．通过对所采集样品的C、H、N、S等的元素分析,自然状态下的着火点参数、聚积物粒度等的实验分析,证实了通风空调系统聚集物在火灾发生时对促进燃烧的确切影响．实验结果还预测了被测建筑中通风空调系统最大可能发生火灾的区域．

To know about accumulation characteristics in heating, ventilation and air conditioning (HVAC) systems of public buildings, two office buildings, one underground garage building and one restaurant building are taken for examples. Four sampling spots from four ventilation systems apart are obtained and the combustion parameters, such as proximate analysis, ultimate analysis (C, H, N and S), ignition temperature (nature) and so on are analyzed. It is concluded that effect of the accumulation in ventilation system on combustion supporting is confirmed concretely when building fire happens. The results also predict the most possible zone for accumulation combusting among several public buildings by comparing four ventilation systems.