Fluidized Thermal Backfill Mix Design. Ftbs can be made with locally available sand and aggregates. Ftb= fluidized thermal backfill so there are just some fundamental principles and these are things electrical engineers work with, i’m not sure thermal people.
Ftbs can be made with locally available sand and aggregates. It is typically quite fluid, having a relatively high slump, allowing it to readily flow around the cable/conduits. • fluidized thermal backfills (ftbs) containing significant quantities of recycled materials can be successfully designed by ensuring satisfactory flowability and thermal conductivity properties • observed effects of composition variables should be taken into account in the development of further studies.
Patent US7581903 Method of manufacture and installation
It ensures the employment of conductors of optimized cross section and lines with lower investment. • choose the design thermal rho values for the native soil and thermal backfill. Source and design the fluidized thermal backfill (or compacted granular backfill) based on locally available materials. Fluidised thermal fill and related products serve as backfill medium for 33kv and 110kv underground cables by producing a solid surround while delivering desirable thermal resistivity, ensuring maximum life and higher rating of the cable.
