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Adaptive calibration of a capacitance tomography system for imaging water droplet distribution

A highly sensitive electrical capacitance tomography (ECT) system based on an HP4284 impedance analyser has been developed and used to quantify low concentration multi-phase flows in wet gas separation processes. The system hardware provides high accuracy (0.05%) and high resolution (10−17 F). The s...

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Main Authors: Yang, W Q, Chondronasios, A, Nattrass, S, Nguyen, V T, Betting, M, Ismail, Idris, McCann, H
格式: Article
出版: Elsevier 2004
主题:
TK Electrical engineering. Electronics Nuclear engineering
在线阅读:http://eprints.utp.edu.my/4163/1/FMI_15_2004_Adaptive-new.pdf
http://eprints.utp.edu.my/4163/
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spelling my.utp.eprints.41632017-01-19T08:27:36Z Adaptive calibration of a capacitance tomography system for imaging water droplet distribution Yang, W Q Chondronasios, A Nattrass, S Nguyen, V T Betting, M Ismail, Idris McCann, H TK Electrical engineering. Electronics Nuclear engineering A highly sensitive electrical capacitance tomography (ECT) system based on an HP4284 impedance analyser has been developed and used to quantify low concentration multi-phase flows in wet gas separation processes. The system hardware provides high accuracy (0.05%) and high resolution (10−17 F). The sensor was calibrated in an environmental chamber with solid samples of known permittivity over ranges of temperature and humidity. Adaptive calibration and adjacent electrode pair correction techniques were applied to image very low concentration profiles. This paper describes the techniques used and presents the experimental results obtained from a test flow rig called Twister, which has been designed to separate liquid droplets from wet gas streams. The test results over a range of operating conditions (20–95% humidity) demonstrate that the ECT system is capable of reconstructing clear images of the droplet distribution inside Twister. Changes as small as 1 gWater/kgAir in the form of liquid droplets were detectable. It has also been shown that the concentration of the condensable phase can be estimated quantitatively within 20% in comparison with the reference measurements. Elsevier 2004 Article PeerReviewed application/pdf http://eprints.utp.edu.my/4163/1/FMI_15_2004_Adaptive-new.pdf Yang, W Q and Chondronasios, A and Nattrass, S and Nguyen, V T and Betting, M and Ismail, Idris and McCann, H (2004) Adaptive calibration of a capacitance tomography system for imaging water droplet distribution. Flow Measurement and Instrumentation, 15 . pp. 249-258. http://eprints.utp.edu.my/4163/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Yang, W Q
Chondronasios, A
Nattrass, S
Nguyen, V T
Betting, M
Ismail, Idris
McCann, H
Adaptive calibration of a capacitance tomography system for imaging water droplet distribution
description A highly sensitive electrical capacitance tomography (ECT) system based on an HP4284 impedance analyser has been developed and used to quantify low concentration multi-phase flows in wet gas separation processes. The system hardware provides high accuracy (0.05%) and high resolution (10−17 F). The sensor was calibrated in an environmental chamber with solid samples of known permittivity over ranges of temperature and humidity. Adaptive calibration and adjacent electrode pair correction techniques were applied to image very low concentration profiles. This paper describes the techniques used and presents the experimental results obtained from a test flow rig called Twister, which has been designed to separate liquid droplets from wet gas streams. The test results over a range of operating conditions (20–95% humidity) demonstrate that the ECT system is capable of reconstructing clear images of the droplet distribution inside Twister. Changes as small as 1 gWater/kgAir in the form of liquid droplets were detectable. It has also been shown that the concentration of the condensable phase can be estimated quantitatively within 20% in comparison with the reference measurements.
format Article
author Yang, W Q
Chondronasios, A
Nattrass, S
Nguyen, V T
Betting, M
Ismail, Idris
McCann, H
author_facet Yang, W Q
Chondronasios, A
Nattrass, S
Nguyen, V T
Betting, M
Ismail, Idris
McCann, H
author_sort Yang, W Q
title Adaptive calibration of a capacitance tomography system for imaging water droplet distribution
title_short Adaptive calibration of a capacitance tomography system for imaging water droplet distribution
title_full Adaptive calibration of a capacitance tomography system for imaging water droplet distribution
title_fullStr Adaptive calibration of a capacitance tomography system for imaging water droplet distribution
title_full_unstemmed Adaptive calibration of a capacitance tomography system for imaging water droplet distribution
title_sort adaptive calibration of a capacitance tomography system for imaging water droplet distribution
publisher Elsevier
publishDate 2004
url http://eprints.utp.edu.my/4163/1/FMI_15_2004_Adaptive-new.pdf
http://eprints.utp.edu.my/4163/
_version_ 1738655323695087616
score 13.251813

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