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- W101801128 abstract "Two studies were conducted to investigate practical and accurate methods for computing the air volumes passing through underground mine regulators and rectangular openings in stoppings. The first series of tests produced a revised regulator formula using the static pressure drop at the regulator and the area of the opening to calculate the volumetric flow through the regulator. An overall discharge coefficient was determined experimentally for all pressure losses at regulators. The second set of observations used 4-inch rotating vane anemometers to develop methods factors for velocity readings at underground regulators. Methods factors were determined by comparing the corrected measured velocity at the centerline of the openings with the average air velocity passing through the regulators. Methods factors were dependent on the size of the opening, the location of the reading (inlet or discharge side of the regulator), and the type of instrument support (rod-mounted or hand-held); they showed little dependence on the air velocity." @default.
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- W101801128 date "1981-01-01" @default.
- W101801128 modified "2023-09-26" @default.
- W101801128 title "Ventilation measurements at underground-mine regulators" @default.
- W101801128 doi "https://doi.org/10.2172/5901869" @default.
- W101801128 hasPublicationYear "1981" @default.
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