论文标题
湿度对含颗粒管流的摩擦电荷充电的实验研究
Experimental study of humidity influence on triboelectric charging of particle-laden duct flows
论文作者
论文摘要
粉末上的静电电荷由于颗粒粒子和粒子表面相互作用而通过摩托电化而产生。这是对工业生产安全的潜在威胁，也是过去众多火灾和尘埃爆炸的来源。环境条件（例如环境温度和相对湿度）影响了摩洛电荷电荷。在这项工作中，我们通过实验研究了环境湿度对平方形管中气体固体流动的颗粒电荷的影响。单分散PMMA颗粒被送入PMMA管道中的完全发育的气流，然后穿过金属管截面。通过法拉第杯在金属管的出口处测量颗粒的电荷。通过测量在各种环境条件下的静电电荷，我们观察到静电电荷首先随湿度增加，然后在湿度变得更高时降低。
Electrostatic charge on powders arises during pneumatic transport due to particle-particle and particle-surface interactions via triboelectrification. This is a potential threat to the safety of industrial productions and the source of numerous fires and dust explosions in the past. Triboelectric charges are affected by environmental conditions, such as ambient temperature and relative humidity. In this work, we experimentally investigated the influence of ambient humidity on the particle charge of gas-solid flows in a square-shaped duct. Monodisperse PMMA particles are fed into a fully developed airflow in a PMMA duct and then pass through a metallic duct section. The charge of particles is measured at the outlet of the metallic duct via a Faraday cup. By measuring the electrostatic charge under various environmental conditions, we observed that the electrostatic charge first increases with the humidity and then decreases when the humidity becomes higher.
