Dual-Modality Electrical Tomography for Flame Monitoring

Hu, Die; Cao, Zhang; Sun, Shijie; Sun, Jiangtao; Xu, Lijun

doi:10.1109/jsen.2018.2868959

Cited by 30 publications

(5 citation statements)

References 39 publications

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“…So, it is challenging for conventional ECT to measure the conductive phase of conductive/dielectric mixed multi-phase flows when the measurements are mainly dependent on the conductivity of water rather than the permittivity [2]. To address this issue, some multi-modality tomography systems such as ECT/electrical resistance tomography (ERT) dual-modality and ECT/magnetic induction tomography (MIT) dual-modality systems have been proposed [3][4][5], where ERT and MIT are used to provide conductivity information. Electrical impedance tomography (EIT) is another imaging technique widely used in medical imaging that can obtain complex impedance information [6].…”

Section: Index Terms-complex-valued Measurement Electrical Capacitance Tomography Image Reconstruction Multi-frequency Tomographymentioning

confidence: 99%

Linearization Point and Frequency Selection for Complex-Valued Electrical Capacitance Tomography

Zhu

Ma²,

et al. 2021

IEEE Trans. Instrum. Meas.

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Section: Index Terms-complex-valued Measurement Electrical Capacitance Tomography Image Reconstruction Multi-frequency Tomographymentioning

confidence: 99%

Linearization Point and Frequency Selection for Complex-Valued Electrical Capacitance Tomography

Zhu

Ma²,

et al. 2021

IEEE Trans. Instrum. Meas.

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“…Earlier studies of burner flames [1][2][3][4] are concerned mostly with optical and thermoacoustic properties of flames and little on their electrical properties. Chemical reactions in a flame produce charged species such as free electrons, ions, and soot particles [5][6][7][8]. The charge density and its spatial distribution in a flame are directly related to the chemical reactions, containing important information on the combustion processes [9].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Charge Density in Methane Fired Diffusion and Premixed Flames Using Electrostatic Probes

Yan

2021

IEEE Sensors J.

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The charge density in a flame contains important information about the combustion processes that is difficult to obtain due to fast, complex, and highly exothermic reactions. This paper presents a study of using electrostatic probes to measure the charge density in methane fired diffusion and premixed flames. The sensing principle, practical design, and performance assessment of the electrostatic probe are presented.Comparative experimental studies with a reference ion-current sensor carried out on a combustion test rig indicate that the fluctuation of the signal from the electrostatic probe arises from the variation in the charge density in a flame. A dimensionless index, combining the average of local peak values in the electrostatic signal with the flame oscillation frequency, is adopted as an indicator of the charge density. Experimental results demonstrate that the charge density in a methane diffusion flame has an increasing trend with the fuel flowrate varying from 0.80 L/min to 1.20 L/min. The charge density in a methane-air premixed flame yields a decreasing trend with the equivalence ratio ranging from 0.54 to 0.75, then increases and reaches a local peak at the equivalence ratio of 1.03, and continues to increase when the equivalence ratio varies from 1.03 to 3.50. The charge density in the inner cone is higher than that in the outer cone for diffusion and premixed flames. The results obtained suggest that the developed electrostatic probe and the index can be used to indicate the charge density in diffusion and premixed flames.

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“…In the third category, there are systems composed by a single set of electrodes [17][18][19][20][21][22][23][24][25][26][27], i.e. integration of a single plane and a single array of sensors for a dual-modality ERT/ECT system.…”

Section: Introductionmentioning

confidence: 99%

“…integration of a single plane and a single array of sensors for a dual-modality ERT/ECT system. These systems can be built with internal electrodes [17][18][19][20][21][22] and external electrodes [23][24][25][26]. For both types of sensors in this category, integration of the dual modalities in a single plane and a single set of electrodes is achieved by using a voltage-excitation and current-sensing strategy with a 2-terminal sensing configuration.…”

Section: Introductionmentioning

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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Dual-Modality Electrical Tomography for Flame Monitoring

Cited by 30 publications

References 39 publications

Linearization Point and Frequency Selection for Complex-Valued Electrical Capacitance Tomography

Linearization Point and Frequency Selection for Complex-Valued Electrical Capacitance Tomography

Measurement of Charge Density in Methane Fired Diffusion and Premixed Flames Using Electrostatic Probes

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

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