| Popis: |
Recently, spread in the world many different categories of wood chipper to be convert the field trees waste to chips. In Egypt, especially in the new land farms the wastes of field trees represent an immense problem. For this reason, the wood chipper machine manufactured in small workshops scattered in the region of Dakahlia governorate. Because of the owners of these workshops, do not have experience in the design of wood chipper machines. Therefore, it immediately needed to evaluate each of the chipper design and its operation. Therefore, the aim of recent paper are to evaluate the design of offset slider crank for drum wood chipper and to evaluate operating parameter of drum chipper on wood chip removal rate (WCRR, m3/h), actual chip thickness (ACT), share plan angle (SPA), chip thickness ratio (CTR), chip reduction coefficient (CRC), size classification of wood chips (SCC) and the machine productivity. The operating parameters of the local chipper machine (model MUPM) included two wood sit positions in chipper (perpendicular of wood fiber relative to cutting drum (Per) and parallel to wood fiber (P); two cutting drum revolution (Per1=5000 rpm and Per2= 5500 rpm) two types of wood (white wood or exported and local wood or feedstock) and two moisture content (17% for white wood and 33% for feedstock). |
