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Calculations of boiler thermal efficiency

posted:2018-10-23

boiler thermal efficiency( η )= output heat / input heat × 100%pJbIndustrial Steam Boiler

Boiler input heat = fuel consumption (kg / s) × low heat input into the boiler fuel (kJ / kg)pJbIndustrial Steam Boiler

Boiler output heat = boiler evaporation × (superheated steam KJ/kg - boiler feed water KJ/kg) - boiler blowdown (generally 2% of evaporation) × (boiler saturated steam ratio 焓 - boiler feed water KJ/kg) - (boiler The ratio of the slag cooler cooling water backwater to the slag cooler inlet cooling water) × the slag cooler cooling water volumepJbIndustrial Steam Boiler

Boiler thermal efficiency = [boiler evaporation × (superheated steam KJ/kg - boiler feed water KJ/kg) - boiler blowdown (generally 2% of evaporation) × (boiler saturated steam KJ/kg - boiler feed water KJ/kg) - (boiler The ratio of the slag cooler cooling water back to the slag-slag cooler inlet cooling water × the slag cooler cooling water amount / / [fuel consumption (kg / s) × into the boiler fuel low calorific value (kJ / kg) ]×100%pJbIndustrial Steam Boiler

 pJbIndustrial Steam Boiler


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