Developing a novel fibre high speed photography method for investigating solid volume fraction in a 3D spouted bed

Authors

  • Long Qian,

    1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
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  • Yong Lu,

    Corresponding author
    • Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
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  • Wenqi Zhong,

    1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
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  • Xi Chen,

    1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
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  • Bing Ren,

    1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
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  • Baosheng Jin

    1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
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Author to whom correspondence may be addressed. E-mail address: luyong@seu.edu.cn

Abstract

A novel fibre high speed photography method has been developed for solid volume fraction measurement. This system mainly includes a small fibre-optic endoscope, a halogen light source, a high speed video recorder and a powerful computer with large memory. The endoscope which could be inserted into the reactors is used to form motion images of particles within the measurement space illuminated by the halogen lamp. The motion images of particles are recorded by the high speed video camera and will be processed by a series of digital image processing algorithms such as calibration, denoising, enhancement and binarisation. The solid volume fraction can be figured out by counting the particle number on each frame in the video. The feasibility and reliability of the measurement system have been tested in a pilot 3D spouted bed which is 200 mm in diameter and 1500 mm in height. The radial profile of the solid volume fraction in the spouted bed is determined using the analysis method mentioned above. The results indicate that the fibre high speed photography method is a promising tool for gas–solid flow research.

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