How To Calculate Heating Value

Heating Value Calculator

Heating value, also known as calorific value, is a crucial parameter in energy analysis and combustion processes. It represents the amount of heat released when a specified quantity of fuel is combusted completely…

1. Select the fuel type from the dropdown menu.
2. Enter the heating value (in MJ/kg) for the selected fuel.
3. Click the ‘Calculate’ button to see the results.

The heating value is typically calculated using the following formula:

Heating Value (MJ/kg) = (HHV - (H2O * L)) / (1 + (H2O * L / HHV))

Where:

• HHV is the higher heating value (MJ/kg)
• H2O is the water content (kg/kg of fuel)
• L is the latent heat of vaporization (MJ/kg)

Heating Values of Common Fuels

Fuel	Heating Value (MJ/kg)
Coal	25-35
Natural Gas	35-40
Diesel	42-45
Kerosene	43-46

1. Always use the latest heating value data for accurate calculations.
2. Consider moisture content when calculating heating value for solid fuels.
3. Use heating value to optimize combustion processes and reduce emissions.

What is the difference between higher heating value (HHV) and lower heating value (LHV)?

HHV considers the heat released from the complete combustion of a fuel, including the heat from condensing the water vapor produced. LHV, on the other hand, does not include this heat.

For more information, refer to these authoritative sources:

• U.S. Energy Information Administration
• Engineering ToolBox
• ScienceDirect