测量生物质火灾的电导率。
Measurement of electrical conductivity for a biomass fire.
机构信息
Physics Department, University of Botswana, Private Bag 0022, Gaborone, Botswana.
Marine Geophysical Laboratory, James Cook University, Townsville, QLD 4811, Australia.
出版信息
Int J Mol Sci. 2008 Aug;9(8):1416-1423. doi: 10.3390/ijms9081416. Epub 2008 Aug 13.
A controlled fire burner was constructed where various natural vegetation species could be used as fuel. The burner was equipped with thermocouples to measure fuel surface temperature and used as a cavity for microwaves with a laboratory quality 2-port vector network analyzer to determine electrical conductivity from S-parameters. Electrical conductivity for vegetation material flames is important for numerical prediction of flashover in high voltage power transmission faults research. Vegetation fires that burn under high voltage transmission lines reduce flashover voltage by increasing air electrical conductivity and temperature. Analyzer determined electrical conductivity ranged from 0.0058 - 0.0079 mho/m for a fire with a maximum temperature of 1240 K.
构建了一个受控火焰燃烧器，其中可以使用各种天然植被作为燃料。燃烧器配备了热电偶来测量燃料表面温度，并用作微波腔，使用实验室级别的 2 端口矢量网络分析仪从 S 参数确定电导率。植被材料火焰的电导率对于高压输电故障研究中闪络的数值预测很重要。在高压输电线下燃烧的植被火灾会通过增加空气电导率和温度来降低闪络电压。分析仪确定的电导率范围为 0.0058-0.0079 毫姆/米，对应的最大温度为 1240 K。
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