combustion calculator

COMBUSTION CALCULATIONS Combustion calculations per kg of fuel by G.Subhash Reddy Fuel Rice Husk Gross Calorific Value (GCV) 2000 C 40 H 8 S 0.19 O 40 N 0.49 M 9.32 ash 2 Total 100 Unburnt Carbon-%of fuel 1 Ambient Temperature 40 Excess air 1.4 Boiler exit temperature 160 Radiation, ash and other losses 2.5 Altitude - m 100 Humidity.fraction 0.6 Moisture fraction in air 0.028795 Theoretical Oxygen required 1.2784 Theoretical air required 5.522246 Actual air required 7.96036 Flue gas produced 8.93036 Air moisture 0.229215 Combustion moisture 0.7152 Fuel moisture 0.0932 Total moisture 1.037615 CO2 1.4313 SO2 0.0038 N2 5.946285 O2 0.51136 Total gas - check 8.93036 O2 % by weight 5.726085 CO2 % by weight 16.02735 H2O % by weight 11.61896 Dry gas loss % 11.36555 Loss due to moisture in air % 0.687646 Loss due to hydrogen moisture % 22.8864 Loss due to moisture in flue ga 2.9824 Loss due to unburnt carbon % 3.9 Total loss % 44.322 Air density at 0 C temp 1.282387 Flue gas density at 0 C temp 1.237536 CO2 % by volume 0.101156 Moisture % by Volume 0.178845

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Calculates Combustion Efficiency, Flue Gas Volumes, Air Requirement etc. Very useful for Boiler Engineers. Contributed by Sri G. Subhash Reddy. Free to Share without any modifications and share along with his name

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comb Combustion calculations per kg of fuel by G.Subhash ReddyFuelRice HuskGross Calorific Value (GCV)2000C40H8S0.19O40N0.49M9.32ash2Total100Unburnt Carbon-%of fuel1Ambient Temperature40Excess air1.4Boiler exit temperature160Radiation, ash and other losses2.5Altitude - m100Humidity.fraction0.6Moisture fraction in air0.028794596Theoretical Oxygen required1.2784Theoretical air required5.5222462203Actual air required7.9603600601Flue gas produced8.9303600601Air moisture0.2292153516Combustion moisture0.7152Fuel moisture0.0932Total moisture1.0376153516CO21.4313SO20.0038N25.9462847084O20.51136Total gas - check8.9303600601O2 % by weight5.7260849121CO2 % by weight16.0273492936H2O % by weight11.6189643493Dry gas loss %11.3655523801Loss due to moisture in air %0.6876460549Loss due to hydrogen moisture %22.8864Loss due to moisture in flue gas %2.9824Loss due to unburnt carbon %3.9Total loss %44.3219984351Air density at 0 C temp1.2823869744Flue gas density at 0 C temp1.2375360438CO2 % by volume0.1011555544Moisture % by Volume0.1788445987

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