Abstract
Electrical capacitance tomography (ECT) is being widely used to investigatemulti-phase systems, in particular in gas–solid systems such as fluidized beds.Commercial systems are available that can provide the researcher withreconstructed tomograms, and this paper introduces a technique to carry outsome quantitative analysis of a sequence of reconstructed tomograms. Theperformance characteristics of an ECT system attached to a 200 mm ID testsection are investigated using hollow glass spheres of 40, 65, 85 and 100mm in diameter. The analysis technique discussed in this paper has beenused to identify the spheres using a contour plot showing solid fraction,x, contoursat x = 0.2,0.5 and 0.8, and has also been used to estimate the diameter of the identifiedspheres. In this way the advantages of the analysis technique and the performancecharacteristics of the tomography system are presented and compared with othersin the literature.
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