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Title: Electrical capacitance tomography measurements on the pneumatic conveying of solids
Authors: Rao, S.M. 
Zhu, K. 
Wang, C.-H. 
Sundaresan, S.
Issue Date: 3-Oct-2001
Citation: Rao, S.M.,Zhu, K.,Wang, C.-H.,Sundaresan, S. (2001-10-03). Electrical capacitance tomography measurements on the pneumatic conveying of solids. Industrial and Engineering Chemistry Research 40 (20) : 4216-4226. ScholarBank@NUS Repository.
Abstract: We have evaluated the usefulness of electrical capacitance tomography (ECT) as a tool for monitoring pneumatic conveying in horizontal ducts. Power spectra of solids concentration fluctuations obtained from single-plane ECT data were used to identify the various flow regimes, and these were confirmed through visual observation. From single-plane ECT data, the instantaneous and time-averaged distributions of particle concentration over the cross section of the conveying pipe have been determined in various flow regimes. Propagation velocities of patterns were evaluated from cross correlation of twin-plane ECT data. The solids mass flow rate, determined independently by load cell measurements, was found to be roughly proportional to the product of the pattern velocity, the particle density, and the average solids holdup in the pipe, and the proportionality factor depended on the material being transported through the pipe. In our experiments involving flows past a 90° smooth bend, ECT was able to detect significant temporal and spatial nonuniformity in particle concentration in the postbend region.
Source Title: Industrial and Engineering Chemistry Research
ISSN: 08885885
Appears in Collections:Staff Publications

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