Total Flue Gas T/D = Total Flue Gas m3/hr = Total Flue Gas Nm3/hr *((273+ T)/273) Flue Gas Heat loss mmkcal/hr = % Heat loss to flue gas = *100 Setting loss mmkcal/hr = (Radiation loss * heat release)/100 Actual furnace efficiency = 100 (% Heat loss to flue gas) (%Setting – – loss) (% loss due to APH) (%Setting loss) (% loss due to APH) – – – Furnace Design Data FR/FRE Temperature profile O2 Profile & Efficiency Furnace CIT COT BWT HAT Stack O2 η °C °C °C °C °C % % 11F1 262 361 830 333 160 90.7 11F2 262 361 830 333 160 90.7
Total Flue Gas T/D = Total Flue Gas m3/hr = Total Flue Gas Nm3/hr *((273+ T)/273) Flue Gas Heat loss mmkcal/hr = % Heat loss to flue gas = *100 Setting loss mmkcal/hr = (Radiation loss * heat release)/100 Actual furnace efficiency = 100 – (% Heat loss to flue gas) – (%Setting loss) – (% loss due to APH) – (%Setting loss) – (% loss due to APH) Furnace Design Data FR/FRE Temperature profile O2 Profile & Efficiency Furnace CIT °C COT °C BWT °C HAT °C Stack °C O2 % η % 11F1 262 361 830 333 160 90.7 11F2 262 361 830 333 160 90.7
ENCON%20Handbook%20Fired%20Heater.docx