Question

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how to calculate furnace oil consumption in boiler

Expert Solution

Furnance oil consumption in boiler can be calculated by knowing the boiler specification, and steam production from boiler.
Then the required heat for the produced steam is calculated based on the efficiency of the boiler, and calorific value of fuel (i.e amount of heat produced from 1 kg of fuel), that can calculate the required fuel.

EXAMPLE:

B_i =B (1- L)/100

Bi= calcuation of fuel consumption, kg/h

B=fuel consumption, kg/hr

L=boiler mechanical incomplete combustion loss%

B=100Q/(Qdw*)

Q=effective heat utilization of boiler, KJ/h

Qdw= Low calorific value of fuel,KJ/kg

=boiler thermal efficiency,%

Q =D (lbh-lgs-rW/100) + D_w (lbs-lgs)

Q = Heat utilized by boiler effectively KJ/h

D= effective heat utilization of boiler, Kg/h or Boiler rated evaporation Kg/h

lbh= saturated steam enthalpy of the boiler under rated pressure, KJ/kg

lgs=boiler feed enthalpy, KJ/kg

r=saturated vapor vaporization latent heat, KJ/kg

W= steam humidity, %

Dw = Boiler discharge, Kg/h

lbs= saturated vapor enthalpy of boiler under rated pressure, kJ/kg

For superheated steam boilers

Q = D(lgr-lgs)+ Dw (lbs-lbs)

lgr= enthalpy of superheated steam, KJ/kg

Amanda K answered 2 years ago

what is firehole furnace, bottom blow down and feedwater pump. parts of a boiler

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