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Calculation of Pressure Losses During Pneumatic Transport

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Refractories and Industrial Ceramics Aims and scope

Amethod of calculating pressure losses during pneumatic transport with the objective of choosing the most efficient operating mode, which allows reducing the consumption of compressed air, is observed. It has been found that the generally used formulas for calculating pressure losses along the path, determined as the sum of the pressure losses for pure gas and material, do not explain why the initial pressure losses decrease with increasing air flow rate, and their further growth. The importance of considering changes of air density and air flow velocity along the length of the pipe, as well as the necessity of considering the blockage of part of the pipeline cross section with material in case of high concentrations, is shown. It is proposed to determine the pressure losses using the Bernoulli equation in integral form, for example, using the eight nodes Gauss method. The applicability of the method of calculating both straight and inclined sections of pipelines is established. The experimental results of researching and analyzing the proposed isothermal model in a vacuum pneumatic transport laboratory facility are given. An example of calculating the pressure losses for an industrial pneumatic transport system with a pipe length of 450 m and an inner diameter of 147 mm at various expendable concentrations of material is shown.

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Authors and Affiliations

  1. Federal State Autonomous Educational Institution of Higher Education “Ural Federal University,”, Yekaterinburg, Russia

    S. F. Shishkin, A. S. Shishkin & V. B. Ponomarev

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  1. S. F. Shishkin
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  2. A. S. Shishkin
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  3. V. B. Ponomarev
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Correspondence to V. B. Ponomarev.

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Translated from Novye Ogneupory, No. 12, pp. 51 – 55, December, 2019.

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Shishkin, S.F., Shishkin, A.S. & Ponomarev, V.B. Calculation of Pressure Losses During Pneumatic Transport. Refract Ind Ceram 60, 630–635 (2020). https://doi.org/10.1007/s11148-020-00419-x

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