Journal
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume 71, Issue -, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2022.3181929
Keywords
Sensors; Capacitive sensors; Permittivity; Conductivity; Salinity (geophysical); Oils; Electrodes; Capacitive sensors; cross-plane measurements; electrical capacitance tomography (ECT); process tomography; real-time sensing; two-phase flows; water-cut
Funding
- U.S. Department of Energy Cooperative Agreement [DE-FE0031858]
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Measurement of phase volume fractions in water-containing multiphase flows is necessary for optimization of industrial flow processes. A new approach based on electrical capacitance tomography (ECT) sensors and Hanai's mixture formula has shown potential for estimating water volume fractions in two-phase water-containing flows. However, the approach has only been investigated in controlled experiments under static conditions. In this study, the proposed ECT-based method is evaluated in a flow loop study for volume fraction estimation in oil-water two-phase flows.
Measurement of phase volume fractions in water-containing multiphase flows is necessary for the optimization of a host of industrial flow processes. Many water-containing multiphase flows can be classified as either water-dispersed or water-continuous mixtures. A recently developed approach based on Hanai's mixture formula and utilizing electrical capacitance tomography (ECT) sensors have shown good potential for obtaining water volume fraction estimates in two-phase water-containing flows with different water salinity levels. However, the proposed approach was investigated via controlled experiments restricted to static configurations while, in practice, multiphase flows can be dynamic and unpredictable. In this work, we perform a flow loop study of the proposed ECT-based method for volume fraction estimation in oil-water two-phase flows. We evaluate the performance of the proposed method in both water-dispersed and water-continuous flow regimes by employing different types of capacitive sensors in cylindrical arrangements and parallel-plate rectangular arrangements.
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