Thermal characteristics of reeled trailing cables for shuttle cars.
Kovalchik-PG; Cole-GP; Duda-FT
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9414, 1994 Jan; :1-14
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.
Materials-handling-equipment; Mechanical-tests; Thermodynamics; Loads-forces; Temperature-measurement; Cables; Models; Coal-mining; Derating-factors; Trailing-cables; Cable-reels
NTIS Accession No.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9414