Electrostatic modelling and measurement of airborne particle concentration

Author

Murnane, S.N. ; Barnes, R.N. ; Woodhead, S.R. ; Amadi-Echendu, J.E.

Author_Institution

Sch. of Eng., Greenwich Univ., Woolwich, UK

Volume

45

Issue

2

fYear

1996

fDate

4/1/1996 12:00:00 AM

Firstpage

488

Lastpage

492

Abstract

Granular airborne particles generally carry very small amounts of electric charge as a consequence of charging by the triboelectric effect. The presence of such particles induces charge of opposite polarity on a stationary conducting electrode. The amount of charge carried by the particles and the trajectories of the particles have significant random components and the signals produced are of very low level. The signal processing is further complicated by the random variation in the concentration of particles, i.e., the solid/gas ratio. This paper compares the results obtained from the electrostatic modelling of such sensors with those obtained from experiments

Keywords

air pollution measurement; charge measurement; dust; electric sensing devices; electrodes; electrostatic devices; modelling; particle counting; surface charging; 3D model; airborne particle concentration measurement; atmospheric dust monitoring; charge amplifier; electrostatic charge detection; electrostatic modelling; electrostatic sensing; granular airborne particles; induced opposite polarity charge; pipe-electrode measurement unit; simulated signals; stationary conducting electrode; triboelectric charging; Atmospheric modeling; Current measurement; Electrodes; Electrostatic measurements; Instruments; Mathematical model; Particle measurements; Pollution measurement; Solids; Triboelectricity;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.492773

Filename

492773