Energy Meter Allocation per Good Kilogram or Metre

Allocation here is by mass at average intensity, which is a deliberate simplification with two known biases. Fabric rejected at final inspection carried the full process energy, while fabric pulled at grey inspection carried almost none, so a mass-weighted scrap charge is an upper bound when rejects are found early and an underestimate when they are found late; if your rejection point is known, weight the scrap by the fraction of the route it completed. Product mix cuts the same way, because a heavy navy at long liquor ratio can take twice the energy per kilogram of a pale continuous run, so mass allocation quietly subsidises the difficult product. The compressed air figure is a sub-meter of electricity and must never be added to the site total; the tool reports it as a share for exactly that reason. Direct-fired gas must exclude boiler fuel, which is reconstructed from the steam and efficiency figures instead. Boiler efficiency is intended as a boiler-house-to-process figure covering flue, blowdown, standing and distribution loss on the same calorific-value basis as the gas bill - a net-basis efficiency against a gross-basis bill overstates performance by about ten per cent for natural gas. Steam heat per tonne must match the working pressure and the real feedwater temperature; the 680 kWh/t default corresponds to saturated steam near 8 bar g from 85 deg C feedwater with no condensate return credit, and a site returning hot condensate should lower it. Standby energy is usually estimated rather than metered, read off the half-hourly profile floor, and it is the input most worth improving. The per-metre result is only meaningful for a single fabric construction, since it is simply the per-kilogram figure multiplied by mass per metre. Finally, this is a plant-boundary allocation tool and not a machine study: it will tell you how much of the site bill made nothing saleable, but it cannot tell you which machine spent it.