Evaluation Of Physical-mechanical Properties Of Herbaceous Bioenergy Plants

摘要

This paper provides the results of the tests on bioenergy plants-topinambours and sunflowers, their cultivation and usage for fuels. Previous investigations show that stalks of topinambours, grown in fertile soil and fertilised, can reach up to 4 m height and give up to 15t dry matter (D.M.) ha~(-1) of the green mass, sunflowers-3 m and 11tD.M.ha~(-1) respectively.rnEffective way to minimise the moisture of energy plants is to keep them harvested in the storage. The stems of the topinambours cut in autumn reaches 20% moisture content in 11 days, the sunflowers-in a month.rnPhysical-mechanical characteristics of chopped stems-angles of fall and natural crumble, is important for construction of stores of chopped mass. These angles of large-stalked plants, chopped by forage combines E-281C and Krone-Big varied marginally: angle of fall-from 74° to 82°, angle of natural crumble-from 45° to 47°.rnThere were investigations on main physical-mechanical characteristics of chopping quality of bioenergy plants. Chopping quality of topinambours and sunflowers, chopped by the stationary fodder chopper SPP-1 was sufficient high, and we recommend this chopper to chop the bioenergy plants. Experimental data of chopping quality of combines E-281C and Krone-Big show, that the amount of dust, which was large enough (8.6-12.5%) was affected by stalks were chopped with leafs during trials. According to the fineness requirements for fuel-chaff, stalks were chopped in good quality, despite large amount of dust.