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由于矿井主扇功率大，常年昼夜不停地运转，耗电量很大。据煤炭行业统计，我国国有重点煤矿目前使用的主扇共有1086台，其运转平均效率低于50％者占41％，平均效率在50％～60％之间者占57％，平均效率大于60％者仅占2％，煤矿矿井主扇耗电量占原煤总电耗的1／3左右。冶金、有色
As the mine main fan power, perennial round the clock to run, power consumption is great. According to the statistics of the coal industry, there are 1086 main fans currently used in China’s state-owned key coal mines, accounting for 41% of the average operating efficiency of less than 50% and 57% of the average efficiency of 50% -60%, with an average efficiency of more than 60 % Only accounted for 2%, coal mine main fan power consumption accounted for about 1/3 of the total electricity consumption. Metallurgy, nonferrous metals