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Boiler Fuel Consumption Calculation

2017-07-04 15:07:05

Many customers ask us boiler price, the cost of the boiler and how to calculate boiler fuel consumption when they want to purchase a boiler.

For the calculation of boiler fuel consumption, firstly, determine the specifications and boiler steam production, and the actual enthalpy increment of the boiler is calculated from the steam pressure and steam production. Secondly, the required heat is calculated according to the efficiency of the boiler ( Fuel heat), and calorific value of fuel (per kilogram of fuel can produce heat), that can calculate the required fuel.

ZBG industrial boilers can burn oil, gas, biomass, coal, etc., so fuels are the essential point determining its operating cost. Some clients prefer coal fuel for boilers because there are cheap and rich coal resource in their countries, like in India, Indonesia, Vietnam, etc. Some clients tend to purchase natural gas fired boiler even a little expensive than other fuels because of the government policy. Anyway, you can choose whatever depend the actual requirement and we can meet your need.

For example, The calculation formula of fuel demand for steam boiler(saturated steam boilers) is as follows:
Bj=B (1-q4/100)
Bj- calculation of fuel consumption, kg/h
B- fuel consumption, kg/h
q4- boiler mechanical incomplete combustion loss,%

B=100Q/ (Qdw*)
B- fuel consumption, kg/h
Q- effective heat utilization of boiler, kj/h
Qdw- Low calorific value of fuel, kj/kg
η- boiler thermal efficiency,%.

Q = D (Ibh-Igs-rω / 100) + Dpw (Ibs-Igs) Q- boilers use heat effectively, kj/h
D- effective heat utilization of boiler, kg/h
D-boiler rated evaporation, kg / h
Ibh - saturated steam enthalpy of the boiler under rated pressure, kj / kg
Igs - boiler feed enthalpy, kj / kg
r-saturated vapor vaporization latent heat, kj / kg
ω-steam humidity,%
Dpw - boiler discharge, kg / h
Ibs - saturated water enthalpy of the boiler under rated pressure, kj / kg
For superheated steam boilers
Q = D (Igr-Igs) + Dpw (Ibs-Igs)
Igr - enthalpy of superheated steam, kj / kg

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