Parameters of stalk biomass cutter
2013
Ancans, D., Latvia Univ. of Agriculture, Jelgava (Latvia) | Kakitis, A., Latvia Univ. of Agriculture, Jelgava (Latvia) | Nulle, I., Latvia Univ. of Agriculture, Jelgava (Latvia)
The topic of this paper deals with biomass briquettes from long hemp, reed and reed canary grass stalks. The orientation of straw or reed stalks had to promote binding by the pressing operation. The specific briquetting energy of coarse chopped arranged reed and hemp stalk particles ranges from 51.61 kJ•kgE-1 to 67.23 kJ•kgE-1. Arranged structure of biomass particles in briquetting die is recommended for significant increasing of durability of stalk material briquettes. The splitting force of the hemp stalk briquettes ranges from 110 N•mmE-1 to 122.37 N•mmE-1, the splitting force of the arranged reed particles lies between 65 N•mmE-1 and 80 N•mmE-1. The specific splitting force is 2 to 5 times higher than for non arranged stalk briquettes. New briquetting equipment is necessary to be designed for biomass particle arranging before pressing. The objective of the study is to develop a method for determination of the specific cutting energy for stalk materials. The article presents the specific cutting energy calculation method and the results of experiments for determining the specific energy for different stalk biomass. The measurement results show that the specific cutting energy of hemp stems reaches 274 J•m•kgE-1, 50.3 J•m•kgE-1 for lake reeds, and for reed canary grass – only 7.8 J•m•kgE-1. These values will be used in calculation of the energy consumed in the cutter.
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