Gas/oil/water flow measurement by electrical capacitance tomography

Li, Yang; Yang, Wuqiang; Xie, Chenggang; Huang, Sunxiang; Wu, Zhipeng; Tsamakis, Dimitrios; Lenn, Chris

doi:10.1088/0957-0233/24/7/074001

Cited by 94 publications

(39 citation statements)

References 15 publications

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“…However, when the 56 moisture is not evenly distributed within the sample, the single paired capacitance 57 sensor cannot provide any information about this variability. The use of multiple 58 electrodes can make this feasible (Li et al, 2012;Pan, 2014 the ECT sensor should able to differentiate between them and map their locations 70 within, for example, a spray drying system. This would facilitate detection of the extent 71 and location of spray deposits, a capability which could be used for quality control of 72 the spray drying process.…”

Section: Introduction 25mentioning

confidence: 99%

Development of a capacitance sensing system for monitoring moisture content of spray dried gelatin powders

Wang

Pan

McDonald

et al. 2017

Journal of Food Engineering

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9For on-line, non-contact measurement of moisture content (MC) of spray dried 10 products, a capacitance sensing system was developed using pairs of copper plates 11 attached to the perimeter of the spray dryer measuring cylinder. The plates formed 12 capacitors which were sensitive to changes in dielectric properties, which in turn were 13 related to MC. The self-built system was tested on spray dried gelatin powders in three 14 modes: a) an off-line mode to test the capabilities of the sensor at different MC levels 15 (4% to 44% (d.b.)); and b) an on-line mode to measure MC of samples passing through 16 the sensor enclosure. Results indicated this system was feasible to measure MC both 17 statically and dynamically, but it had better performance for off-line samples (R 2 =0.98, 18 RMSE=1.9%); c) this system was also used in an ECT mode and showed the capability 19 to reflect spatial distribution of deposition during spray drying.

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Section: Introduction 25mentioning

confidence: 99%

Development of a capacitance sensing system for monitoring moisture content of spray dried gelatin powders

Wang

Pan

McDonald

et al. 2017

Journal of Food Engineering

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“…A Venturi tube can be used to form an annular flow distribution by amplifying the effect of swirl flow. Because the restriction in the diameter of Venturi's throat accelerates the flow and pushes the gas inwards, the centrifugal force pushes the liquid layer outwards, generating a central gas core and a liquid annular layer, the acceleration and swirl effect also generates the mixture of water and oil, producing an emulsion [37].…”

Section: B Flow Conditionermentioning

confidence: 99%

Dual-Modality 4-Terminal Electrical Capacitance and Resistance Tomography for Multiphase Flow Monitoring

Frias

Yang

2020

IEEE Sensors J.

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“…At the same time, the capacitance of adjacent electrode pair (pair 1-2) is 39 times greater than the opposing electrode pair (pair [1][2][3][4][5]. In this case, the capacitance measuring circuit must be of high precision as well as high dynamic range for successful measurement.…”

Section: A Numerical Simulationsmentioning

confidence: 99%

Electrical Capacitance Tomography With Differential Sensor

2015

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In electrical capacitance tomography, capacitance changes are used to determine the permittivity distribution in the imaging area. However, the changes are small compared with the standing capacitances, e.g., usually in the order of 10%-30%. For a single channel capacitance sensor, a differential configuration having a redundant pair of electrodes can be used to cancel the standing capacitance. However, there has been no report so far introducing such differential configuration into electrical capacitance tomography (ECT) sensors. This is mainly due to the fact that an ECT sensor is composed of an array of electrodes, e.g., 8, 12, and 16 and the capacitance measurements in ECT are required to interrogate capacitances of all electrode pair combinations, which introduce significant difficulty for a differential configuration. In this paper, a novel differential ECT sensor is proposed and designed, which consists of concentrically arranged dual array electrodes. It can also be thought as an additional array of electrodes being inserted between the measuring electrodes and the outer screen of a conventional ECT sensor. The new sensor design has been validated by the numerical simulation. A prototype sensor has been developed and evaluated with an field programmable gate arrays (FPGA)-based ECT measurement system, showing that with the proposed differential sensor, the dynamic range of the measured capacitance is reduced by ∼80% and an average improvement of 10.8 dB in signal-to-noise ratio is achieved.Index Terms-Electrical capacitance tomography, differential sensor, capacitance measuring circuit. 1530-437X © 2015 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. Ziqiang Cui (M'13) received the B.Sc. degree in electrical engineering and automation from the Hebei University of Technology, China, in 2004, and the M.Sc. and Ph.D. degree in detection technology and automation equipment from Tianjin University, China, in 2007 and 2009, respectively. He is currently a Lecturer with Tianjin University, China. His current research interests include electrical tomography instrumentation, signal processing, sensor design, and multiphase flow measurement. Huaxiang Wang (SM'06) received the degree from Tianjin University, Tianjin, China. He is currently a Professor with the School of Electrical Engineering and Automation, Tianjin University.He has authored five books and over 100 academic papers. His major research interests include sensing techniques and information processing, process parameter detection and control systems, and intelligent instrumentations.Wuliang Yin (M'05-SM'06) received the B.S. and M.S. degrees in electronic measurement and instrumentation from Tianjin University,

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Gas/oil/water flow measurement by electrical capacitance tomography

Cited by 94 publications

References 15 publications

Development of a capacitance sensing system for monitoring moisture content of spray dried gelatin powders

Development of a capacitance sensing system for monitoring moisture content of spray dried gelatin powders

Dual-Modality 4-Terminal Electrical Capacitance and Resistance Tomography for Multiphase Flow Monitoring

Electrical Capacitance Tomography With Differential Sensor

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