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main fans
Main fans produce the general ventilating current of the mine, and are generally of large capacity and permanently installed. They are assisted by natural ventilation, if present, 1890 and, if necessary, by booster fans. They are installed to perform a certain duty, and great attention is paid to their efficiency since this governs the cost of performing the duty.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)