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Replacing Brattice Cloth At Coal Faces With Air Curtains and Diffuser Fans. A Preliminary Study.
Bielicki-RJ; Thimons-ED; Kissell-FN
NTIS: PB 244 790 :8 pages
The possibility of replacing the brattice cloth closest to the coal mine working face with an air curtain mounted on top of a continuous- mining machine or with a diffuser fan was explored by the Bureau of Mines. Preliminary tests conducted at a full-scale model working face with the brattice end set at 18 feet showed that the air curtain improved face ventilation only slightly and was not nearly as effective as placing the brattice at 10 feet. A 2,000-ft3/min diffuser was more effective than the air curtain. It is concluded that the air curtain probably could not function as a line brattice extension, although the diffuser fan may have some potential.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 244 790
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division