Gross fuel yield

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The gross fuel yield is a parameter for biofuels based on agricultural raw materials . It indicates the producible energy content of a biofuel per area and is therefore a parameter for area productivity. The energy content is the product of the amount of fuel produced and its energy content ( calorific value ).

The gross fuel yield is usually given as GJ / ha ( gigajoules per hectare ). Alternatively, it is stated in l fuel equivalents / ha, whereby the amount of fuel replaced by the biofuel ( petrol or diesel fuel ) is used on the basis of the lower calorific value.

The gross fuel yield only takes into account the energy contained in the fuel, but not the energy used to generate the biofuel. In order to assess the actually saved fossil energy per hectare, however, the net energy yield must be determined.

literature

  • Norbert Schmitz, Jan Henke, Gernot Klepper: Biofuels - a comparative analysis. Fachagentur Nachwachsende Rohstoffe eV, Gülzow 2009 ( pdf ).