MEASUREMENTS OF COLLECTION EFFICIENCY OF SINGLE, CHARGED DROPLETS SUSPENDED IN A STREAM OF SUBMICRON PARTICLES WITH AN ELECTRODYNAMIC BALANCE
MEASUREMENTS OF COLLECTION EFFICIENCY OF SINGLE, CHARGED DROPLETS SUSPENDED IN A STREAM OF SUBMICRON PARTICLES WITH AN ELECTRODYNAMIC BALANCE
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DOI：
10.1016/0021-8502(93)90058-h
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发表时间：
1993-03-01
影响因子：
4.5
通讯作者：
RAY, AK
中科院分区：
文献类型：
--
作者：
DHARIWAL, V;HALL, PG;RAY, AK
一个实验系统的基础上的电动平衡已被开发和测试的收集效率的测量的单一，固定的带电液滴在流中的相反带电的亚微米液滴。基于光共振的光散射技术已被用于获得收集器液滴的尺寸和尺寸变化，由于液滴的沉积具有高精度。该技术涉及应用洛伦兹-米氏理论的高分辨率实验弹性散射数据获得的连续可调谐环形染料激光器。收集器尺寸在9-37 μ m范围内，气溶胶颗粒尺寸在0.038-0.15 μ m范围内，收集器电荷从3.2 × 10（-14）到3.3 × 10（-13）C变化，以及流速从5.0 × 10（-3）到6 × 10（-2）m s-1范围内，对收集效率的影响进行了研究。结果进行了比较，在静电力的存在下的收集效率的理论模型。收集效率的实验值与理论预测值吻合得很好。
An experimental system based on an electrodynamic balance has been developed and tested for measurements of collection efficiencies of single, stationary charged droplets in a stream of oppositely charged submicron droplets. A light scattering technique based on optical resonances has been used to obtain collector droplet size and size changes due to the deposition of droplets with high precision. The technique involves the application of Lorenz-Mie theory to high resolution experimental elastic scattering data obtained with a continuously tunable ring dye laser. The effects of collector size in the range 9-37 mum, aerosol particle size in the range 0.038-0.15 mum, collector charge varying from 3.2 x 10(-14) to 3.3 x 10(-13) C, and stream velocity ranging from 5.0 x 10(-3) to 6 x 10(-2) m s-1, on the collection efficiency have been studied. Results have been compared with a theoretical model for the collection efficiency in the presence of electrostatic forces. Experimental values of collection efficiency are found to be in good agreement with those predicted by the theory.