The heating or combustion value of a fuel can be expressed as the quantity of heat (Btu per gallon) released during the combustion process where oxygen from the air reacts with the hydrogen and carbon in the fuel.
The combustion or heating value for some common fuels oil grades are indicated in the table below:
| Grade | Heating Value (Btu/US gal) |
Comments |
|---|
| Fuel Oil No. 6 | 151,300 – 155,900 | Bunker C |
- 1 Btu/US gal = 278.7 J/liter
The heavier the grade of fuel used in an oil burner, the greater the care must be taken to ensure that oil is supplied the combustion process at the proper atomizing temperature. If the temperature is too low the fuel oil will not atomize and evaporate and the burner will not operate efficiently.
Bunker C 