Page 160 - Advanced Mine Ventilation

140 Advanced Mine Ventilation

Table 10.1 Collection Efficiency for Different Dust Particle Sizes and
Water Particles

Waterdrop Coal Dust E, Efficiency of
Diameter (mm) Diameter (mm) Collection (%)
500 1 5
2 24
3 39
5 57
10 78
300 1 10
2 34
3 49
5 66
10 85
200 1 17
2 41
3 57
5 73
10 93

Dust Density ¼ 1.37 (coal); Water Velocity ¼ 98 ft/s.

Figure 10.2 The optimum water droplet size for maximum collection efficiency.