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Thermal characteristics of reeled trailing cables for shuttle cars.

Authors
Kovalchik-PG; Cole-GP; Duda-FT
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9414, 1994 Jan; :1-14
Link
NIOSHTIC No.
10012437
Abstract
The U.S. Bureau of Mines conducted research to determine acceptable derating factors for reeled coal mine trailing cables. Four cable-reel combinations, representative of industry usage, were used in this project. The cables were continuously and itermittently loaded at six different duty cycles with direct currents of five different magnitudes. Temperature rises within the cables were measured with thermocouples and the data recorded on a computer. Thermal time constants were calculated from the steady-state results, which fixed the periods of the duty cycles of the intermittent load tests. The relationships between the average temperature rise and current load were established for each layer of each cable. Two models were constructed; one used empirical data from the continuous and intermittent load tests and the other was based on thermodynamic theory.
Keywords
Materials-handling-equipment; Mechanical-tests; Thermodynamics; Loads-forces; Temperature-measurement; Cables; Models; Coal-mining; Derating-factors; Trailing-cables; Cable-reels
Publication Date
19940101
Document Type
Information Circular
Fiscal Year
1994
NTIS Accession No.
PB95-136297
NTIS Price
A03
Identifying No.
IC-9414
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9414
State
PA
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