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Lower heating value

MJ
kWh
BtuIT
Wood (dry) kg MJ/kg
Pellets (quality) kg MJ/kg
Coal (anthracite) kg MJ/kg
Gasoline l MJ/l
Diesel l MJ/l
Ethanol l MJ/l
Natural gas m3 MJ/m3
Propane kg MJ/kg
n-Butane kg MJ/kg


Rounding: significante numbers.
Decimal sign:

This calculator allows to compare how much energy is released when a certain amount of fuel is burned. For several fuels lower heating values are prescribed. The lower heating value (or net calorific value or lower calorific value) is the amount of heat released during the combustion of a specific amount of fuel. It is determined without bringing the products of combustion to a standard temperature. Condensation energy (e.g. released when cooling water vapour) is not accounted for. Some of the prescibed data are averaged values.
With a given amount of a fuel, the released energy is calculated. In addition it is calculated, which amount of the other fuels would be needed to release the same amount of energy.

Usage: Type the value of an energy amount into a field (pink, top) with the correct units or type the amount of fuel into a corresponding field (lightgreen, bottom left). After a mouse click on any free space of the window or on the "calculate" button the calculation is performed.
For each kind of fuel a lower heating value is given in the grey fields on the right. If needed, these values may be changed. For these values only a point as decimal sign is possible. When changing, pay attention to the correct units! Then, after a mouse click on any free space of the window or on the "calculate" button a new calculation is performed.
Move the mouse over a unit or click on it to read its full name. Type the "reset" button to reset the calculation.

Example: Which mass of propane is needed to produce the same amount of energy, which is released in the combustion of 10 kg of coal. Type the value "10" into the field for the mass of coal. After the next mouse click on any free space of the window or on the "calculate" button you can read the result. 293 MJ of energy are released. This amount of energy is also produced in the combustion of 6.3283 kg propane.

Remarks:
- Please note the remarks about the representation of numbers..
- There is no warranty for the calculation. Cactus2000 is not responsible for damage of any kind caused by wrong results.
- Please send an email if you have suggestions or if you would like to see more conversions to be included.

- A collection of all Cactus2000-converters running offline may be ordered for a price of € 15.-. A test version is available for download for free.

© Bernd Krüger, 06.05.2011

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