Particle volume flow rate measurement by combination of dual electrical capacitance tomography sensor and plug flow shape model

Maung, Chit Oo; Kawashima, Daisuke; Oshima, Hiroyuki; Tanaka, Yuhi; Yamane, Yoshihiro; Takei, Masahiro

doi:10.1016/j.powtec.2020.01.084

Cited by 16 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…for mass flow metering where ECT is used as an underlying instrument. Yet the possibility to measure the spatial density β s (x, y) is also relevant for research in particulate flows [70].…”

Section: Flow Measurement In the Industrial Plantmentioning

confidence: 99%

ECT in a large scale industrial pneumatic conveying system

Neumayer,

Bretterklieber,

Suppan

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

The application of electrical capacitance tomography (ECT) for monitoring of industrial processes has been studied and proposed by many researchers. Examples can be found in monitoring of multiphase flows or mixing processes in reactors. Demonstrations of the functionality based on lab and test rig measurements have proven the potential of the proposed principles. This paper discusses the application of an ECT system in a heavy industries application. The harsh operating conditions in the industrial environment pose several challenges for the application of sophisticated measurement technology. This work addresses key aspects for the application of an ECT measurement system in such an environment. Specifically the electrical system design and the influence of the temperature are addressed. Relevant parameters and possible solutions are discussed. Furthermore the application of ECT as instrument for mass flow metering in pneumatic conveying processes is addressed. Supportive measurement studies from test rig experiments and comparative simulation studies are presented. Therefore, the paper provides a concise discussion on the application of ECT under harsh operating conditions, as well as the use of ECT as a measurement device for process measurement. The work concludes with a presentation of a measurement system in an industrial plant in which the proposed concepts were succesfully implemented.

show abstract

Section: Flow Measurement In the Industrial Plantmentioning

confidence: 99%

ECT in a large scale industrial pneumatic conveying system

Neumayer,

Bretterklieber,

Suppan

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…A disadvantage is the comparatively low imaging quality, which stems from the soft-field nature of the electric fields within the sensor. Yet, despite the comparatively low imaging quality, electrical tomography systems have seen emerging use as underlying instruments in measurement, e.g., for flow metering of particulate matter in pneumatic conveying [19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Efficient Jacobian Computations for Complex ECT/EIT Imaging

Neumayer,

Suppan,

Bretterklieber

et al. 2024

Mathematics

View full text Add to dashboard Cite

The reconstruction of the spatial complex conductivity σ+jωε0εr from complex valued impedance measurements forms the inverse problem of complex electrical impedance tomography or complex electrical capacitance tomography. Regularized Gauß-Newton schemes have been proposed for their solution. However, the necessary computation of the Jacobian is known to be computationally expensive, as standard techniques such as adjoint field methods require additional simulations. In this work, we show a more efficient way to computationally access the Jacobian matrix. In particular, the presented techniques do not require additional simulations, making the use of the Jacobian, free of additional computational costs.

show abstract

“…Capacitive sensing technology has been suggested and used for flow measurement in pneumatic conveying [ 8 , 9 , 10 ]. Figure 2 depicts an exemplary scheme of a capacitive flow meter.…”

Section: Introductionmentioning

confidence: 99%

A Model-Based Analysis of Capacitive Flow Metering for Pneumatic Conveying Systems: A Comparison between Calibration-Based and Tomographic Approaches

Suppan

Neumayer

Bretterklieber

et al. 2022

Sensors

View full text Add to dashboard Cite

Pneumatic conveying is a standard transportation technique for bulk materials in various industrial fields. Flow metering is crucial for the efficient and reliable operation of such systems and for process control. Capacitive measurement systems are often proposed for this application. In this method, electrodes are placed on the conveyor systems transport line and capacitive signals are sensed. The design of the sensor with regard to the arrangement and the number of electrodes as well as the evaluation of the capacitive sensor signals can be divided into two categories. Calibration-based flow meters use regression methods for signal processing, which are parametrized from calibration measurements on test rigs. Their performance is limited by the extend of the calibration measurements. Electrical capacitance tomography based flow meters use model-based signal processing techniques to obtain estimates about the spatial material distribution within the sensor. In contrast to their calibration-based counterparts, this approach requires more effort with respect to modeling and instrumentation, as typically a larger number of measurement signals has to be acquired. In this work we present a comparative analysis of the two approaches, which is based on measurement experiments and a holistic system model for flow metering. For the model-based analysis Monte Carlo simulations are conducted, where randomly generated pneumatic conveying flow patterns are simulated to analyze the sensor and algorithm behavior. The results demonstrate the potential benefit of electrical capacitance tomography based flow meters over a calibration-based instrument design.

show abstract

Particle volume flow rate measurement by combination of dual electrical capacitance tomography sensor and plug flow shape model

Cited by 16 publications

References 15 publications

ECT in a large scale industrial pneumatic conveying system

ECT in a large scale industrial pneumatic conveying system

Efficient Jacobian Computations for Complex ECT/EIT Imaging

A Model-Based Analysis of Capacitive Flow Metering for Pneumatic Conveying Systems: A Comparison between Calibration-Based and Tomographic Approaches

Contact Info

Product

Resources

About