Table 2 Downstream ventilation fan voltage and corresponding wind speed.
From: Smoke dispersion test and emergency control plan of fire in mine roadway during downward ventilation
Ventilator voltage level (V) | 4.5 | 5 | 6 | 7.5 | 9 |
Total wind speed of main duct (m s−1) | 1.69 | 1.79 | 1.91 | 2.2 | 2.62 |
Side-duct air velocity (m s−1) | 0.26 | 0.34 | 0.45 | 0.65 | 0.78 |
