Comparison between Planar Laser-induced fluorescence and Conductivity Probe techniques formeasurement of Mixing Time in aerated dual Rushton stirred tank

فاقد چكيده

Planar Laser-induced fluorescence (PLIF) and Conductivity methods used to measure mixing times in aerated and unaerated tank stirred with dual Rushton impeller. Theoretical and experimental comparisons between these two types of methodology are presented in this paper. The Conductivity method is cheap and easy to use but affecting the local flow pattern and are likely to provide local measurements which are influenced by the region of scrutiny. In modern PLIF method despite the accuracy, in order to maximize the quantitativeness of the results correction for several error sources must be made, also measuring and determination of the degree of homogeneity is expensive and need to some specific apparatus and not available in every laboratory systems. The objective of this paper is to find conditions that simple conductivity method with acceptable accuracy could be used and empirical correlations are derived based on experimental data.