volume 3, issue 5, P499-503 1967
DOI: 10.1007/bf02497946
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Abstract: Pits and mines in the Soviet Union are fitted with adequate numbers of modern high-efficiency ventilators meeting the highest world standards; however, in operation these machines are still well below the optimum in cost efficiency. This is partly due to the difficulty of analyzing ventilation systems, the possibility of multiple-valued and unstable operation, and the lack of efficient control, especially automatic control.We are faced with such basic theoretical problems as the development of economical meth…

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