Vapor liquid fraction determination

Details Vapor liquid fraction determination Vapor liquid fraction determination

1976-08-31

1977-12-13

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01N 2742

Patent

active

040631532

ABSTRACT:
The relative amounts of liquid phase versus vapor phase of a mixed phase conductive fluid, such as boiling water, is determined by conductivity measurement taken in several distributed directions overlapping within the cross section of a flow path by providing a rotating field vector therein with an alternating voltage on the order of 1-30 kilohertz, with conductivity measurement produced by the rotated field being divided by a liquid conductivity measurement to determine liquid fraction (and by subtraction from unity, vapor fraction), the rotating electrical field being produced by application of a multi-phase alternating current to groups of electrodes with poled pairs distributed in alternation around the periphery of the cross section to be measured, the electrode structure and intervening insulators defining a flow measuring cross section with allowance for rigors of flow conditions and fluid environment to provide reliable, long-lived effective measurement.

REFERENCES:
patent: 3559044 (1971-01-01), Vander Heyden

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