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Experimental research on dynamic concentration distribution for combustible dust based on ultrasonic-electric hybrid detection

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Abstract

The concentration distribution of combustible dust determines thermal intensity distribution during an explosion. Current measurements for dust concentration have their particular limitations. Targeting this, we proposed an “ultrasonic-electric” hybrid detection system and a fusion model. We deployed 12 of the ultrasonic-electric hybrid systems in orthogonal arrays to comprehensively observe the clouds. First, the ultrasonic-electric hybrid detection systems obtained concentration data in real time, and those data were calculated by fusion model. Then, the clouds and their concentrations changing with time were depicted. We analyzed those trends and found certain patterns in them. Our approach can provide a fast, accurate way to detect concentrations of dynamic and complex dust. Finally, the corresponding relationship between the dust concentration distribution and its explosive heat intensity distribution is obtained. The results show that the thermal distribution of combustible dust at a concentration of 20-120 g/m3 is proportional to the concentration. This is important for preventing dust explosions and reducing the thermal intensity of explosions.

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Acknowledgments

The research is supported by the State Key Laboratory of Mechatronics Engineering and Control and sponsored by National Project (20160229150) the Open Research of Beijing Information Science and Technology University (KF20191123205).

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Authors and Affiliations

  1. Beijing Institute of Technology School of Mechatronical Engineering, Beijing, 100081, China

    Yan Zhang, Wenzhong Lou & Shenghua Fu

  2. Key Laboratory of Modern Measurement & Control Technology of Education, Beijing Information Science and Technology University, Beijing, 100192, China

    Hongjun Wang

  3. Beijing Institute of Aerospace Control Devices, Beijing, 100081, China

    Mingru Guo

Authors
  1. Yan Zhang
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  2. Wenzhong Lou
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  3. Hongjun Wang
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  4. Mingru Guo
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  5. Shenghua Fu
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Contributions

W.L. and H.W conceived the problem and designed the solution; Y.Z. and M.G. designed the experiments; Y.Z. performed the experiments; S.F. analyzed the data; Y.Z. wrote the paper.

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Correspondence to Yan Zhang.

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Zhang, Y., Lou, W., Wang, H. et al. Experimental research on dynamic concentration distribution for combustible dust based on ultrasonic-electric hybrid detection. Heat Mass Transfer 56, 1673–1684 (2020). https://doi.org/10.1007/s00231-019-02807-7

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