Net and gross calorific values
Heating with liquefied petroleum gas
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A comparison of natural gas, fuel oil, and propane
Fuels can be compared with each other using their net and gross calorific values. The values for propane, natural gas H, and fuel oil EL in their liquid and gas states are important.
- The gross calorific value of propane is 28.095 kWh/m³; that of natural gas H is only around 10.02 kWh/m³.
- The net calorific value of propane is 12.87 kWh/kg; that of fuel oil EL is only around 11.8 kWh/l.
- Densities as per DIN 51622: Propane 2.0372 kg/m³ and butane 2.66 kg/m³
- Density for liquid at 0°C: Propane 0.5305 kg/l and butane 0.5950 kg/l
Explanation of gross calorific value
The gross calorific value/gross heat of combustion value (HHV/Hs) specifies the amount of heat that is released during the combustion and subsequent cooling of the combustion gases to the initial temperature and their condensation.
Explanation of net calorific value
The net calorific value/net heat of combustion value (LHV/Hi) denotes the amount of heat that is released during the combustion of a standard cubic metre of dry gas (without the amount of heat contained in steam of the combustion gases).
The gross calorific value is therefore the greatest possible theoretical value (combustion heat). The net calorific value differs from the gross calorific value by the amount of condensation heat of the steam that forms during combustion, and is therefore around 8-9% lower.
A comparison of net and gross calorific values
Liquefied petroleum gas impresses consumers with the best results for net and gross calorific values. Do you represent a company and want to find out more about liquefied petroleum gas? Please contact us.