Calorific value, also known as the heating value or energy content, is a measure of the amount of energy that can be obtained from a specific fuel when it undergoes complete combustion. It is typically expressed in units of energy per unit of the substance, such as joules per kilogram (J/kg), megajoules per cubic meter (MJ/m³), or British Thermal Units per pound (BTU/lb).
Calorific value indicates how much heat energy a fuel can produce when burned or combusted completely. It is a crucial parameter in various industries and applications, including power generation, heating, and transportation.
Different fuels have different calorific values, which affect their energy efficiency and suitability for specific purposes.
Calorific value is essential for determining the energy content of fuels and for calculating their efficiency and emissions in various processes. It helps in comparing the energy potential of different fuels and selecting the most appropriate fuel source for specific applications.
Calorific Value for Different Fuels.
The calorific value, also known as the heating value or energy content, of different fuels can vary significantly. Here are the approximate calorific values for some common fuels:
- Natural Gas: The calorific value of natural gas can vary, but it’s typically around 45-55 megajoules (MJ) per cubic meter or about 1,000-1,200 BTUs per cubic foot.
- Gasoline: Gasoline has a calorific value of about 44-48 megajoules (MJ) per liter or around 125,000-135,000 BTUs per gallon.
- Diesel Fuel: Diesel fuel has a calorific value of approximately 35-38 megajoules (MJ) per liter or about 130,000-140,000 BTUs per gallon.
- Propane: Propane has a calorific value of about 46-51 megajoules (MJ) per liter or around 91,000-93,000 BTUs per gallon.
- Coal: The calorific value of coal can vary widely depending on the type and grade, but it typically ranges from about 24-35 megajoules (MJ) per kilogram.
- Wood: The calorific value of wood also varies with the type and moisture content, but it’s roughly in the range of 15-20 megajoules (MJ) per kilogram.
- Hydrogen: Hydrogen has a very high calorific value of about 120-142 megajoules (MJ) per kilogram, making it one of the most energy-dense fuels.
Keep in mind that these values are approximate and can vary based on the specific composition and conditions. Calorific values are essential for understanding the energy potential of different fuels for various applications, including power generation and heating.
Calorific Value of Some Fuels
|Natural Gas||45-55 MJ/m^3|