Operating conditions of a mine fan under conditions of variable resistance
Résumé
According to the basic fluid principles and ventilation laws, combined with the ventilation network computing method, this study proposed the concepts of relative sensitivity and absolute sensitivity, and studied this two sensitivities’ variation law under the conditions of variable airway resistance. The result showed that: when the airway resistance increased, the fan air volume, its relative sensitivity, absolute sensitivity and fan pressure’s relative sensitivity, absolute sensitivity tend to decrease. At the same time, fan pressure showed a trend of increase. On the contrary, when the airway resistance goes down, those parameters’ change tends to be an opposite trend. Research conclusion can provides basis and guidance for adjusting the fan operation condition in mine production process.
Références
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