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Chinese Journal of Chemical Engineering 23 (2015) 268–275
Contents lists available at ScienceDirect
Chinese Journal of Chemical Engineering
journal homepage: www. elsevier. com/ locate/CJCHE
Energy, Resources and Environmental Technology
Liquid holdup measurement with double helix capacitance sensor in
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horizontal oil–water two-phase flow pipes
Lusheng Zhai, Ningde Jin ⁎, Zhongke Gao, Zhenya Wang
School of Electrical Engineering Automation, Tianjin University, Tianjin 300072, China
a r t i c l e i n f o a b s t r a c t
Article history: This paper presents the characteristics of a double helix capacitance sensor for measurement of the liquid holdup
Received 2 May 2013 in horizontal oil–water two-phase flow. The finite element method is used to calculate the sensitivity field of the
Received in revised form 17 August 2013 sensor in a pipe with 20 mm inner diameter and the effect of sensor geometry on the distribution of sensitivity
Accepted 27 August 2013
field is presented. Then, a horizontal oil–water two-phase flow experiment is carried out to measure the response
Available online 4 November 2014
of the double helix capacitance sensor, in which a novel method is proposed to calibrate the liquid holdup based
Keywords: on three pairs of parallel-wire capacitance probes. The performance of the sensor is analyzed in terms of the flow
Horizontal oil–water two-phase flow
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