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Method Factors for Anemometer Measurement At Pipe Outlets.

Authors
Garcia-F; Cervik-J
Source
Proc Longwall U S A Conf Pittsburgh, Pennsylvania, 6/2-4/87 PP 125-134 :125-134
Link
NIOSHTIC No.
10005951
Abstract
This paper discusses vertical gob holes routinely used to control methane in gobs. In most cases, vane anemometers are used to measure the velocity of gas flowing from the gob holes and subsequently to calculate the volume flow of gas. Generally, the anemometer is centered on the end of the pipe during the measurement. If the cross section of the anemometer is appreciably larger than one-sixth of the pipe diameter, then erroneous velocity readings occur, owing to the blocking effect of the instrument.
Publication Date
19870101
Document Type
OP;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
OP 59-88
NIOSH Division
PRC;
Source Name
Proc. Longwall U.S.A. Conf. (Pittsburgh, Pennsylvania, 6/2-4/87) PP. 125-134
State
PA;
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