Herbaceous energy crop shredding size determination
2010
Smits, M., Latvia Univ. of Agriculture, Jelgava (Latvia) | Kronbergs, A., Latvia Univ. of Agriculture, Jelgava (Latvia) | Kronbergs, E., Latvia Univ. of Agriculture, Jelgava (Latvia)
Latvia has a target in 2020 for renewable energy resources to be 40 % in gross final consumption of energy. In 2005 EU biomass accounted for 66 % of renewable primary energy production. Herbaceous energy crops would be as the main basis for solid biofuel production in agricultural ecosystem in future. In Latvia approximately of 14.6 % of unfarmed agricultural land can be used for herbaceous energy crop growing. Energy crop stalk material cutting properties were investigated in order to find minimum of energy consumption for shredding. It was stated that flattened reed test package thickness changes from 0.4 to 3.8 mm rise the specific cutting energy from 0.025 to 0.078 J•mmE-2. Specific cutting energy per mass unit is growing considerably from 2000 J•kgE-1 to 4000 J•kgE-1 then the shredding size is changed from 20 to 10 mm. If cutting energy per mass unit is advisable less than 2000 J•kgE-1 and homogeneity of composition with peat is preferable, then the shredding size 20 mm is recommended.
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