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Recent Patents on Electrical Engineering


ISSN (Print): 1874-4761
ISSN (Online): 2213-1132

Innovative Techniques For Two-Phase Flow Measurements

Author(s): Basel I. Ismail and Wael H. Ahmed

Volume 1, Issue 1, 2008

Page: [1 - 13] Pages: 13

DOI: 10.2174/1874476110801010001


Two-phase flow is important in an increasing number of applications and industries. For example, the safety analysis codes for the nuclear energy industry require closure relations for the vapor-liquid interfacial transfer terms, while accurate two-phase pressure drop models are necessary to design the piping systems in the oil and gas industry. Also, two-phase flow occurs in heat exchangers, steam generators, chemical reactors, oil transportation and many other process equipments. In addition, development of accurate and suitable instrumentations for on-line monitoring and measurement of the solids concentration and velocity in gas-solid two-phase flows has proven to be a challenging problem with many scientists and engineers worldwide developing novel techniques for this application. This paper presents a review on the electrical-based measurement techniques for gas-solid and gas-liquid two-phase flows along with the most recent patents developed for two-phase flow measurements. Also, development of a novel method for the design of capacitance sensors for void fraction measurement and flow pattern identification was presented in detail.

Keywords: void fraction, recent patents, capacitance sensor, novel design method, gas-liquid flow, gas-solid flow, Two-phase flow

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