Determination of the optimal axial length of the electrode in an electrical capacitance tomography sensor

Peng, Lihui; Mou, Changhua; Yao, Danya; Baofen, Zhang; Xiao, Deyun

doi:10.1016/j.flowmeasinst.2005.02.015

Cited by 33 publications

(22 citation statements)

References 16 publications

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“…It was suggested that the optimal length of electrodes in an ECT sensor should be the same as the inner diameter of the pipe for round-shape sensors and the width of pipe for squareshape sensors [8]. However, this conclusion is merely qualitative, without quantitative verification.…”

Section: D Effect Of Ect Sensorsmentioning

confidence: 99%

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Fringe effect of electrical capacitance and resistance tomography sensors

Sun

Yang

2013

Meas. Sci. Technol.

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Section: D Effect Of Ect Sensorsmentioning

confidence: 99%

“…the gap between them. The length of end guards is chosen to be half the sensor diameter because Peng et al [8] suggested that this is the optimal length to reduce the 3D effect. Similar simulation and calibration were carried out.…”

Section: ‖ ̂ ‖ ‖ ‖ ( )mentioning

confidence: 99%

Fringe effect of electrical capacitance and resistance tomography sensors

Sun

Yang

2013

Meas. Sci. Technol.

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“…(2) Due to the increase in diameter, the 3D effect of electric field becomes serious. The size of electrodes must be optimised (Yang et al 1999, Peng et al 2005. 3The ECT sensor cables with a production-scale fluidised bed of large diameter are longer than with small-scale fluidised beds, resulting in larger stray capacitance .…”

Section: Ect Sensor With Combined Electrodes For Dynamics Test In a Wmentioning

confidence: 99%

Application of process tomography in gas–solid fluidised beds in different scales and structures

Wang

Che

et al. 2018

Meas. Sci. Technol.

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Gas-solids fluidised beds are commonly used in particle-related processes, e.g. for coal combustion and gasification in the power industry, and coating and granulation process in the pharmaceutical industry. Because the operation efficiency depends on the gas-solids flow characteristics, it is necessary to investigate the flow behaviour. This paper is about application of process tomography, including electrical capacitance tomography (ECT) and microwave tomography (MWT), in multi-scale gas-solids fluidisation processes in the pharmaceutical and power industries. This is the first time that both ECT and MWT are applied for this purpose with multi-scales and complex structure. To evaluate the sensor design and image reconstruction and to investigate the effects of sensor structure and dimension on the image quality, a normalised sensitivity coefficient is introduced. In the meanwhile, computational fluid dynamic (CFD) analysis based on a computational particle fluid dynamic (CPFD) model and a two-phase fluid model (TFM) is used. Part of the CPFD-TFM simulation results are compared and validated by experimental results from ECT and/or MWT. By both simulation and experiment, the complex flow hydrodynamic behaviour in different scales is analysed. Time-series capacitance data are analysed both in time and frequency domains to reveal the flow characteristics.

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“…Peng et.al. [24] suggested that in a pipe flow the axial length of electrodes should be equal to the pipe diameter to preserve the 2D approximation often made in calculating the sensitivity distributions.…”

Section: Optimized System Designmentioning

confidence: 99%