Tauger V. M., Volkov E. B. – The Ural State Mining University, Ekaterinburg, the Russian Federation.
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Kholodnikov Iu. V. – Special Design Bureau “Mysl” LLC, Ekaterinburg, the Russian Federation.
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The present work studies the possibility to raise energy efficiency of skip pneumowinding plants. It is shown that
the decrease of energy consumption is reached in double-skip plant with lift pipeline and drainage pipeline due to the
connection of the drainage pipeline with inlet duct of an air pumping plant (compressor). Inlet and outlet pipelines
diameters correlations are obtained theoretically, they provide the equality of average speed of ascending and descending
skips; the correlations are optimal from the point of view of energy consumption by the compressor. The performance of
a skip pneumowinding plant in accordance with the suggested recommendations will give the opportunity of significantly
increase its energy efficiency, simplify the construction, and reduce costs for installation and maintenance. The formulae
are deduced, which allow calculating the diameters of the pipelines of energy efficient skip pneumowinding plant
depending on the masses of loaded and empty skips, their average speed, air temperature at the input and output of the
compressor, and the values of leakage through the clearances in the pneumosystem.

Key words: skip; skip pneumowinding plant; drainage pipeline; compressor; electricity saving.

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