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Investigations of local pressure drop fluctuation signals in annular type fluidized bed photoreactor by continuous wavelet transform

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Abstract

The wavelet transform is an effective tool for studying the dynamic behavior of fluidized beds in the resolution of time variables. To understand the behavior of photocatalyst under different velocity in an annular type fluidized bed, a new analysis technique (Continuous Wavelet Transform: CWT) is applied. With the time-frequency localization characteristics embedded in wavelets, the time and frequency information of signals can be presented as a visualized scheme. By analysis of various methods for pressure fluctuation signals measured from an annular type fluidized bed, it was found that the dynamic behavior of fluidization in the annulus fluidized bed reactor was easily observed with the aid of wavelet transform.

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Authors and Affiliations

  1. Department of Chemical Engineering, Sungkyunkwan University, 440-746, Suwon, South Korea

    Wooseok Nam & Gui Young Han

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  1. Wooseok Nam
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  2. Gui Young Han
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Correspondence to Gui Young Han.

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Nam, W., Han, G.Y. Investigations of local pressure drop fluctuation signals in annular type fluidized bed photoreactor by continuous wavelet transform. Korean J. Chem. Eng. 22, 964–968 (2005). https://doi.org/10.1007/BF02705683

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  • DOI: https://doi.org/10.1007/BF02705683

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