Yan, Y., Byrne, B., Woodhead, Steve and Coulthard, John M. (1995) Velocity measurement of pneumatically conveyed solids using electrodynamic sensors. Measurement Science and Technology, 6 (5). pp. 515-537. ISSN 0957-0233 (Print), 1361-6501 (Online) (doi:https://doi.org/10.1088/0957-0233/6/5/013)

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Abstract

Theoretical and experimental studies of cross correlation techniques applied to non-restrictive velocity measurement of pneumatically conveyed solids using ring-shaped electrodynamic flow sensors are presented. In-depth studies of the electrodynamic sensing mechanism, and also of the spatial sensitivity and spatial filtering properties of the sensor are included, together with their relationships to measurement accuracy and the effects of solids' velocity profiles. The experimental evaluation of a 53 mm bore sensing head is described, including trials using a calibrated pneumatic conveyor circulating pulverized fuel and cement. Comparisons of test results with the mathematical models of the sensor are used to identify important aspects of the instrument design. Off-line test results obtained using gravity-fed solids flow show that the system repeatability is within +/-0.5% over the velocity range of 2-4 m s(-1) for volumetric concentrations of solids no greater than 0.2%. Results obtained in the pilot-plant trials demonstrate that the system is capable of achieving repeatability better than +/-2% and linearity within +/-2% over the velocity range 20-40 m s(-1) for volumetric concentrations of solids in the range 0.01-0.44%.

Item Type:	Article
Uncontrolled Keywords:	Velocity measurement, Pneumatically conveyed solids, Electrodynamic sensor
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > Internet Security Research Laboratory
Last Modified:	29 Jan 2020 15:29
URI:	http://gala.gre.ac.uk/id/eprint/2685

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