How To Calculate The Operating Cost Of The Steam Boiler

Introduction:

According to different types of boilers and fuel types, it can help you calculate the total operating cost and provide you with cost-effective boilers.

Calculation Formula：

Fuel Consumption=The Power of Boiler/(Boiler Efficiency*Calorific Value of The Fuel)

Unit Conversion Reference:

1T/h≈600,000Kcal/h≈700KW

1KJ≈0.239Kcal

Reference for The Calorific Values of Common Fuel: (ZOZEN Boiler Calculation Basis)

1. Coal: 27170KJ/kg (≈6493.63Kcal/kg)

2. Biomass: 16800KJ/kg (≈4015.2Kcal/kg)

3. Natural Gas: 37600KJ/Nm³(≈8986.4Kcal/Nm³)

4. Diesel: 45980KJ/kg (≈10989.22Kcal/kg)

5. LPG: 98500KJ/Nm³(≈23541.5Kcal/Nm³)

6. Heavy Oil: 46100KJ/kg (≈11017.9Kcal/kg)

7. Wood: 15800KJ/kg (≈3776.2Kcal/kg)

For example, if you want to buy a 4Ton/h steam boiler, then the fuel consumption is as follows:

For chain grate coal fired steam boiler: coal consumption=(4*600,000Kcal/h)/(82.3%*6493.63Kcal/kg)≈450kg/h; operation cost=unit price of local coal*coal consumption

For chain grate biomass fired steam boiler: biomass consumption=(4*600,000Kcal/h)/(82.3%*4015.2Kcal/kg)≈726kg/h; operation cost=unit price of local biomass*biomass consumption

For gas fired steam boiler: natural gas consumption=(4*600,000Kcal/h)/(92.6%*8986.4Kcal/Nm³)≈289Nm³/h; operation cost=unit price of local natural gas*natural gas consumption

For diesel fired steam boiler: diesel consumption=(4*600,000Kcal/h)/(92.6%*10989.22Kcal/kg)≈236kg/h; operation cost=unit price of local diesel*diesel consumption

For LPG fired steam boiler:

LPG consumption=(4*600,000Kcal/h)/(92.6%*23541.5Kcal/Nm³)≈110Nm³/h; operation cost=unit price of local LPG*LPG consumption

For heavy oil fired steam boiler: heavy oil consumption= (4*600,000Kcal/h)/(92.6%*11017.9Kcal/kg)≈235kg/h; operation cost=unit price of local heavy oi*heavy oi consumption

For fixed grate wood fired steam boiler: wood consumption=(4*600,000Kcal/h)/(81.6%*3776.2Kcal/kg)≈779kg/h; operation cost=unit price of local wood*wood consumption

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