Effect of particle size on output signal of electrostatic sensors

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

"Dynamic" electrostatic meters have been widely used for gas-solids two-phase flow measurement, particularly for measurement of "split" (Distribution) among conveyor in coal fired power stations due to their advantages of highly sensitive to lean phase flow, passive and nonintrusive natures. However like other techniques, electrostatic meters also have their disadvantages such as the dependency of output signals upon chemical composition, humidity, particle size and etc. This paper investigates the effect of particle size. Based on the theory and common knowledge about the effect of particle size, the amount of charges carried by spherical particles tends to increase for a given mass flow rate if the particles get smaller, which the data from industry and laboratory experiments do not always support. This paper demonstrates this phenomenon, analyses and interprets the experimental data. The paper reveals that the effect of particle size depends on the combination of flow turbulence and charges carried by particles.

Original languageEnglish
Title of host publicationICBMH 2013 - 11th International Conference on Bulk Materials Storage, Handling and Transportation
Publication statusPublished - 16 Dec 2013
Event11th International Conference on Bulk Materials Storage, Handling and Transportation - Newcastle, NSW, Australia
Duration: 2 Jul 20134 Jul 2013

Conference

Conference11th International Conference on Bulk Materials Storage, Handling and Transportation
Abbreviated titleICBMH 2013
CountryAustralia
CityNewcastle, NSW
Period2/07/134/07/13

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    Zhang, J., Cheng, R., & Zhou, B. (2013). Effect of particle size on output signal of electrostatic sensors. In ICBMH 2013 - 11th International Conference on Bulk Materials Storage, Handling and Transportation