Indirect Methode Boiler

DATA INPUT FOR COAL FIRED BOILER INDIRECT METHODE Fuel firing rate Steam generation rate Steam pressure Steam temperature Feed water temperature %CO2 in Flue gas %CO in flue gas Average flue gas temperature Ambient temperature Humidity in ambient air Surface temperature of boiler Wind velocity around the boiler Total surface area of boiler GCV of Bottom ash GCV of fly ash Ratio of bottom ash to fly ash Fuel Analysis (in %) Ash content in fuel Moisture in coal Carbon content Hydrogen content Nitrogen content Oxygen content GCV of Coal

21,416 133,750 98 540 215 14 0 .6 141 32 0.0204 70 3.5 1600 800 452.5 85:15 3 .3 35 45 3.000 0 .7 12.9 4100

UNIT kg/hr kg/hr kg/cm2(g) °C  °C

 °C  °C

kg / kg dry air  °C

m/s m2 kCal/kg kCal/kg

kCal/kg

STEP 1 Theoretical air required for complete combustion STEP 2 Moles of N2 Moles of C (CO2)t STEP 3 % Excess air supplied (EA) STEP 4 Actual mass of air supplied STEP 5 Mass of dry flue gas STEP 6 (all loses) % Heat loss in dry flue gas (L1) % Heat loss due to formation of water from H2 in fuel (L2) % Heat loss due to moisture in fuel (L3) % Heat loss due to moisture in air (L4) % Heat loss due to partial conversion of C to CO (L5) Heat loss due to radiation and convection (L6) Total radiation and convection loss per hour % radiation and convection loss % Heat loss due to unburnt in fly ash (L7) % Heat loss due to unburnt in bottom ash (L8)

5.70285 0.157078 0.0375 19.2 19.272 7244 44 % 36.8 36.854 5436 36 % 7.804599 7.804599 kg/kg of coal coal 8.149943 8.149943 kg/kg of coal coal 4.98 4.9833 3392 92 4.16 4.1688 8866 66 5.40 5.4040 4085 85 0.28 0.2801 0109 09 2.59 2.5908 0845 45 806.35 806.3534 34 1290 129016 165 5 1.46 1.4693 9343 43 0.04 0.57 0.5795 9512 12

% % % % % kCal/m kCal/m2 2 kCal kCal % % %

Boiler efficiency by indirect method

80.48743 %

Indirect methode boiler Ultimate analysis (%)

Carbon Hydrogen Nitrogen Oxygen Sulphur Moisture GCV of fuel Fuel firing rate Surface Temperature of boiler Surface area of boiler Humidity Wind speed Flue gas analysis (%) Flue gas temperature Ambient temperature Co2% in flue gas by volume O2% in flue gas by volume

84.8 11.8 0.42 1.3 1.2 0.48 10,500 8,492.11 70 1600 0.0204 3.5 192 30 10.6 7.500

STEP 1 Theoretical air required for complete combustion

kCal/ kg kg/ hour  °C 2

m kg/kg of dry air m/s  °C  °C

14.40865 kg/kg of oil

STEP 2 % Excess air supplied (EA)

55.55555556 %

STEP 3 Actual mass of air supplied

22.41345556 kg/kg of fuel

STEP 4 Mass of dry flue gas STEP 5 (all loses) % Heat loss in dry flue gas (L1) % Heat loss due to formation of water from H2 in fuel (L2) % Heat loss due to moisture in fuel (L3) % Heat loss due to moisture in air (L4) Heat loss due to radiation and convection Total radiation and convection loss per hour % radiation and convection loss (L6) Boiler efficiency by indirect method

22.12289411 kg/kg of oil 7.850466996 6.644074286 0.030029714 0.317451377 806.3534221 1290165.475 1.446906628 83.711071

% % % % kCal/m2 kCal % %