Download Underground Cable Thermal Backfill. Proceedings of the by S.A. Boggs, F.Y. Chu and H.S. Radhakrishna (Eds.) PDF
By S.A. Boggs, F.Y. Chu and H.S. Radhakrishna (Eds.)
Read Online or Download Underground Cable Thermal Backfill. Proceedings of the Symposium on Underground Cable Thermal Backfill, Held in Toronto, Canada, September 17 and 18, 1981 PDF
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Additional resources for Underground Cable Thermal Backfill. Proceedings of the Symposium on Underground Cable Thermal Backfill, Held in Toronto, Canada, September 17 and 18, 1981
Example text
Crushed magnetite screenings! 292 ! 02 0 . 42 3346 ; *Samples prepared by hand packing materials at lower than Proctor energy. 0 FINE GRAVEL | COARSE GRAIN SIZE DISTRIBUTION CURVE FOR CONSTITUENTS AND MIXES FLUIDIZING AGENTS After a careful screening of different additives, the following fluidizing agents were experimented with: i) fly ash, ii) bentonite clay, iii) polyox resin, and iv) emulsified wax. 39 Thermal Backfill Materials Fly ash is airborne coal ash which is recovered by electrostatic precipitators from thermal generating stations.
Each of the 12 test sections was instrumented to monitor the pipe temperature, radial distribution of temperature in the backfill immediately surrounding the heater pipe, and the thermal resistivity of the backfill. The thermocouples on the heater pipe and in the backfill surrounding the pipe were positioned in such a way that in a truly radial and steady state heat flow, the temperature difference between the adjacent thermocouples would be constant. The following test backfills were installed in the test trenches: 1.
I j P o r o s i t y |j T/R °C c m / w a t t ! Crushed magnetite screenings! 292 ! 02 0 . 42 3346 ; *Samples prepared by hand packing materials at lower than Proctor energy. 0 FINE GRAVEL | COARSE GRAIN SIZE DISTRIBUTION CURVE FOR CONSTITUENTS AND MIXES FLUIDIZING AGENTS After a careful screening of different additives, the following fluidizing agents were experimented with: i) fly ash, ii) bentonite clay, iii) polyox resin, and iv) emulsified wax. 39 Thermal Backfill Materials Fly ash is airborne coal ash which is recovered by electrostatic precipitators from thermal generating stations.