"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.
|Title of host publication||ICBMH 2013 - 11th International Conference on Bulk Materials Storage, Handling and Transportation|
|Publication status||Published - 16 Dec 2013|
|Event||11th International Conference on Bulk Materials Storage, Handling and Transportation - Newcastle, NSW, Australia|
Duration: 2 Jul 2013 → 4 Jul 2013
|Conference||11th International Conference on Bulk Materials Storage, Handling and Transportation|
|Abbreviated title||ICBMH 2013|
|Period||2/07/13 → 4/07/13|