Tehnološke in ekonomske možnosti izrabe sečnih ostankov po strojni seènji za energetske potrebe

Naloga proučuje tehnologijo izrabe sečnih ostankov za proizvodnjo sekancev. Izdelava sekancev iz sečnih ostankov je še precej neznana in neraziskana zadeva. Proučevanje je zajemalo spravilo sečnih ostankov z zgibnim polprikoličarjem Timberjack 1410D in sekanje sečnih ostankov z mobilnim sekalnikom Bruks 801 C na Ecolog 574 B. Za obe operaciji so bili izračunani normativi, ki zadevajo različne postopke pri opravljenem delu. Naloga izpostavlja tudi problem določitve prostorninske gostote oziroma določitev količine sečnih ostankov na prostorninsko enoto. Nenatančno izmerjena količina ostankov v prostorninski enoti lahko vodi v napačno predvidevanje o skupni količini iz njih proizvedenih sekancev. Tem je bila po drevesnih vrstah ugotovljena nasipna gostota pri določeni vsebnosti vode. Na podlagi teh podatkov smo določili energijsko vrednost sekancev in sečnim ostankom.This paper studies the technology of wood residue utilization. The making of wood chips from wood residues is a rather unknown and unresearched matter. The study includes the gathering of wood residues with the Timberjack 1410D forwarder and the cutting of wood residues with the Bruks 801 C mobile chipperto Ecolog 574 B. Rates relating to different procedures of the work done were calculated for both of these operations. The paper also deals with the problem of bulk density determination or determination of wood residue quantity per unit volume. Inaccurate measurement of residue quantity per unit volume can lead to an unexpected total quantity of wood chips produced from them. Their bulk density at the particular water content was determined according to the tree species. On the basis of this data, the energy value of wood chips and wood residues was determined