I = 1753 × FR^0.5507

•I : Investment (€)

•FR : Flow rate (m3/h)

I total = I×1.85

This factor of 1.85 accounts for :

instrumentation, freight, foundation and supports, handling and erection, electrical, piping, insulation for ductwork, painting, engineering, construction and field expenses, contractor fees, start-up, performance test and contingencies.

Components for the calculation of the investment for Thermal oxydation

Expert Group on Techno-Economic Issues (EGTEI)

• Electricity cost 5.10-7 × FR × N× Δp × Ce

•FR : flow rate [m3/h]

•N : annual operating hours [h/year]

•Δp : back pressure [Pa]

(Δp = 8000 Pa for an energy recovery rate of 95% and 3800 for 70%)

•Ce : electricity cost [€/kWh]

(electricity cost = 0.0686 €/kWh),

• Labour cost 0.0625 × N × Cw

•N : annual operating hours [h/year]

•Cw : wage cost [€/h]

(wages = 25.9 €/h in the document)

Components for the calculation of the OCvar for Thermal oxydation (1)

Expert Group on Techno-Economic Issues (EGTEI)

• Natural gas cost FR × [1.29 × (1-Eff/100) × (Tcomb-Tgas)-Pcs*C] / 3240 × N × CNG

•If result <0, then natural gas cost = 0

•FR : flow rate [m3/h]

•Eff : energy recovery rate

(either 95% for a regenerative model or 70% for a recuperative model)

•Tcomb : combustion temperature [°K] (1123 °K in the model)

•Tgas : gas temperature [°K]

•Pcs : calorific power [kJ/g of VOC] (30 kJ/g in the model)

•C : VOC concentration [g/Nm3]

•N : annual operating hours [h/year]

•CNG : natural gas costs [€/kWh] (0.0192 €/kWh in the model)

Components for the calculation of the OCvar for Thermal oxydation (2)

Expert Group on Techno-Economic Issues (EGTEI)

• Insurance and taxes k1 × Itotal (k1 = 0.03 in the document)

Components for the calculation of the OCfix for Thermal oxydation

Expert Group on Techno-Economic Issues (EGTEI)

• Reparation and maintenance k2 × Itotal (k2 = 0.02 in the document)

• Total fixed operating costs k × Itotal (k = k1+k2 = 0.05 in the document)