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Báo cáo lâm nghiệp: "Energy consumption of a chipper coupled to a universal wheel skidder in the process of chipping wood"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Energy consumption of a chipper coupled to a universal wheel skidder in the process of chipping wood. | JOURNAL OF FOREST SCIENCE 57 2011 1 34-40 Energy consumption of a chipper coupled to a universal wheel skidder in the process of chipping wood J. Kovac J. Krilek M. Mikles Department of Forest and Mobile Technology Faculty of Environmental and Production Technology Technical University in Zvolen Zvolen Slovakia ABSTRACT The chipper for chips is an energy consuming machine. Many factors influence the result of chipping which influence the whole process. The paper deals with the process of wood chipping by a chipper in order to determine its energy consumption. The main purpose was the determination of input power and comparison of revolution frequency on the outlet shaft of a skidder regarding the dimension of the torque depending on variable parameters which characterize the process of wood chipping during the measurement and the analysis of energy consumption of a chipping machine was carried out. Keywords chip chipper chipping energy consumption power of cutting Chipping machines are used for the processing of inferior wood and wooden waste like waste from sawing which are produced by the processing of whole tree stems for assortments in the forest or main wood stocks and waste from timber production e.g. branches tree stumps coniferous topwood etc. Output products of these machines are small particles of wood called chips. Chip production can run directly in the scrub on the skid road and in the factory. These are input materials for subsequent industrial delimbing e.g. in chemical industry for the production of cellulose and paper in wood-processing industry for the production of chipboards and fibreboards and in power industry biomass fuel is used for the production of heat 2001 . According to the purpose the chip will be used for it must have required dimensions and shape. For the production of fibreboards the fibres should be from 20 to 30mm in length and from 3 to 5 mm in width. For the production of brown coal the chips should have the length from 80 to .