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ATA INPUT FOR COAL FIRED BOILER

el firing rate 21,416 kg/hr

eam generation rate 133,750 kg/hr

eam pressure 98 kg/cm2(g)

eam temperature 540 °C

ed water temperature 215 °C

CO2 in Flue gas 14

CO in flue gas 0.6

erage flue gas temperature 141 °C

mbient temperature 32 °C

midity in ambient air 0.0204 kg / kg dry air

rface temperature of boiler 70 °C

nd velocity around the boiler 3.5 m/s

tal surface area of boiler 1600 m2

V of Bottom ash 800 kCal/kg

V of fly ash 452.5 kCal/kg

tio of bottom ash to fly ash 85:15

el Analysis (in %)

h content in fuel 3.3

oisture in coal 35

rbon content 45

drogen content 3.000

trogen content 0.7ygen content 12.9

V of Coal 4100 kCal/kg

5.70285

0.157078

0.037519.27244 %

36.85436 %

7.804599 kg/kg of co

8.149943 kg/kg of co

Theoretical air required for complete combustion

Moles of N2

Moles of C(CO2)t

STEP 2

STEP 1

STEP 3

STEP 4

STEP 5

% Excess air supplied (EA)

Actual mass of air supplied

Mass of dry flue gas

8/3/2019 TUGAS PPE2

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rbon 84.8

drogen 11.8

trogen 0.42

ygen 1.3

lphur 1.2

oisture 0.48

CV of fuel 10,500 kCal/ kgel firing rate 8,492.11 kg/ hour

rface Temperature of boiler 70 °C

rface area of boiler 1600 m2

midity 0.0204 kg/kg of dry air

nd speed 3.5 m/s

ue gas temperature 192 °C

mbient temperature 30 °C

2% in flue gas by volume 10.6

2% in flue gas by volume 7.500

14.40865 kg/kg of o

55.55555556 %

22.41345556 kg/kg of fu

22.12289411 kg/kg of o

7.850466996 %

6.644074286 %

0.030029714 %

0.317451377 %

806.3534221 kCal/m2

1290165.475 kCal

1.446906628 %

83.711071 %Boiler efficiency by indirect method

Heat loss due to radiation and convection

Total radiation and convection loss per hour

% radiation and convection loss (L6)

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)

Mass of dry flue gas

STEP 1

Theoretical air required for complete combustion

Flue gas analysis (%)

Ultimate analysis (%)

STEP 2% Excess air supplied (EA)

STEP 3

Actual mass of air supplied

STEP 4