3-14-8 林地残材の一次破砕における生産性および消費エネルギーに及ぼす破砕条件の影響(Session 3 バイオマス等)

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The object of our research is to build the optimal system for crushing and transporting forest residues from a forest to an energy plant. In this study, we investigated the effect of crusher conditions on crushing efficiency and energy consumption during crushing sugi (Cryptomeria japonica) forest residues. Forest residues used were branches and tops, short stems, and mixture of branches and short stems, and these were crushed to chips at a site using mobile wood grinders having an engine or at a plant using stationary crushers having a motor with screens of round holes of 30, 50, and 70 mm. The engine sizes of grinders were 107, 145, and 470 kW, and the motor sizes of crushers were 45, 75, and 132 kW. As a result, the crushing efficiency increased with power unit size and hole size of screen using both the mobile grinder and the stationary crusher. The energy consumption was not influenced by engine size for the mobile grinder, while for the stationary crusher, the energy consumption decreased with an increase of motor rated power of crusher.
2012-07-30