UEi K9206, Инструкция по эксплуатации

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EFFICIENCY CALCULATION:
• KNOWN DATA Fuel: Qgr = Gross Calorific Value (kJ/kg)
Qnet = Net Calorific Value (kJ/kg)
K1 = Constant based on Gross or Net Calorific Value:
K1g = ( 255 x %carbon in fuel )/Qgr
K1n = ( 255 x %carbon in fuel )/Qnet
K2 = % max theoretical CO2 (dry basis)
K3 = % Wet Loss
•
MEASURED DATA:
Tf = Flue Temperature
Ti = Inlet Temperature
O2m = % Oxygen in flue gas
• CALCULATED DATA: Tnet = Net Temperature
% CO2 content in flue gas
% Dry Flue Gas losses
% Wet losses
% Unburned carbon loss
% Efficiency
%CO2 = (20.9 - %O2m) x K2 / 20.9
Tnet = Flue Temperature - Inlet Temperature
Dry flue gas loss = 20.9 x K1n x (Tnet) / K2 x (20.9 - %O2m)
Wet loss = 9 x %H2 + %H2O / Qgr x [2488 + 2.1Tf - 4.2 Ti]
Simplified = [(9 x %H2 + %H2O) / Qgr] x 2425 x [1 + 0.001 Tnet]
Wet loss = K3(1+0.001xTnet)
Where K3 = [(9 x %H2 + %H2O) / Qgr] x 2425
Net Efficiency
= 100% - dry flue gas losses
= 100% - 20.9 x K1n x (Tnet) / K2 x (20.9 - % O2m)
Gross Efficiency = 100% - {dry flue gas wet losses}
= 100% - [20.9 x K1g x (Tnet) / K2 x (20.9 - %O2m)] + [K3 x (1 + 0.001 x Tnett)]
Excess Air = [(20.9% / (20.9% - 02m%)) – 1] x 100%
CO2% = [(20.9% - O2m%) x K2% / 20.9%]
Unburned fuel Loss = K4 x CO% / ( CO% + CO2% )
Where K4 = 70 for coke
= 65 for anthracite
= 63 for Bituminous coal
= 62 for coal tar fuel
= 48 for liquid petroleum fuel
= 32 for natural gas
The formula for K4 is based on the gross calorific value Qgr. To obtain the loss based on net calorific
value multiply by Qgr/Qnet. Since this loss is usually small this conversion has been ignored.