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Components for the calculation of the investment for Thermal oxydation. I = 1753 × FR^0.5507 I : Investment (€) FR : Flow rate (m 3 /h) I total = I×1.85 This factor of 1.85 accounts for :
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Components for the calculation of the investment for Thermal oxydation • 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. Expert Group on Techno-Economic Issues (EGTEI)
Components for the calculation of the OCvar for Thermal oxydation (1) • Electricity cost5.10-7 × 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 cost0.0625 × N × Cw • N : annual operating hours [h/year] • Cw : wage cost [€/h] • (wages = 25.9 €/h in the document) Expert Group on Techno-Economic Issues (EGTEI)
Components for the calculation of the OCvar for Thermal oxydation (2) • Natural gas costFR × [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) Expert Group on Techno-Economic Issues (EGTEI)
Components for the calculation of the OCfix for Thermal oxydation • Insurance and taxesk1 × Itotal(k1 = 0.03 in the document) • Reparation and maintenancek2 × Itotal(k2 = 0.02 in the document) • Total fixed operating costsk × Itotal (k = k1+k2 = 0.05 in the document) Expert Group on Techno-Economic Issues (EGTEI)