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Impact of Water Sprays on Scrubber Ventilation Effectiveness.
Proc 4th Us Mine Vent Symp Berkeley Soc Min Metall & Explor Wilton Company, 1989 :195-201
The U.S. Bureau of Mines conducted a study to assess the impact of a directional water spray system on a unique single-inlet dust scrubber on a low-profile mining machine. Tests were conducted in a full-scale model mine using a Joy 12 cm 10-aa continuous mining machine. Tracer gas was introduced at the face, and concentrations of the tracer gas were monitored at the face and in the return. Various parameters included mining position, depth of cut, brattice setback, and combinations of scrubber, directional sprays, or symmetrical sprays. Results indicated that either directional or symmetrical water spray configuration improved the ventilation effectiveness of the scrubber by a factor of 2 to 3. Average face ventilation effectiveness (fve) values for all testing of the scrubber and directional sprays were 0.95, Versus 0.37 For a standard 6-m (20-ft) blowing curtain without sprays. No fve values were less than the standard 6-m (20-ft) blowing results.
Proc. 4th Us Mine Vent Symp, Berkeley; Soc Min., Metall, & Explor, Wilton, Co, 1989, Pp 195-201
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Content source: National Institute for Occupational Safety and Health Education and Information Division