Abstract
The article presents a review of the technical characteristics and an introduction to the appearance of fan station VO - 22/14AR when it is first put into operation in the Lo Tri area, Thong Nhat coal mine. When this new fan station comes into operation, it will affect the overall ventilation system of the mine. Therefore, it is necessary to check, calculate, evaluate and determine the reasonable working mode of two main fan stations 2K56 - No24 and VO - 22/14AR. The results show that for two fan stations 2K56 - No24 and VO - 22/14AR, the associated fans should be operated in impeller angles of 35 and 50 degrees, respectively. The impeller angles create an overall airflow Qbp of 236.8 m3/s and an air pressure Hbp of 390 mm H20 that fulfill the ventilation requirement of the mine.
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