An investigation of the measurement of void-fraction in air-water mixtures by the electrical impedance method.
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Date
1971-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Australian Atomic Energy Commission
Abstract
An impedance type void meter is described which is suitable for measurement of void-fraction in air-water and steam-water mixtures. The mechanical construction of the meter differs from those previously described in that it minimises problems with pressure casing penetrations and with sealing of connecting leads. A condensed theoretical analysis of the behaviour of the meter in air-water mixtures is included, together with a discussion of possible errors due to changes in conductivity of water and excitation frequency. Two different systems on electronics are described, a series and a bridge type system. An experimental calibration of the prototype meter by the "quick-closing valves method" is compared with the theoretical response and the disagreement arising from comparison is explained.
Description
Keywords
Void fraction, Air-water interactions, Electric impedance, Electric conductivity, Calibration
Citation
Cybula, G. J. (1971). An investigation of the measurement of void-fraction in air-water mixtures by the electrical impedance method (AAEC/TM592). Lucas Heights, NSW: Australian Atomic Energy Commission.