Treesearch
Development and Analysis of SRIC Harvesting Systems
| Authors: | Bryce J. Stokes, Bruce R. Hartsough |
| Year: | 1993 |
| Type: | Scientific Journal |
| Station: | Southern Research Station |
| Source: | In: Proceedings, First Biomass Conference of the Americas: Energy, environment, agriculture, and industry; 1993 August 30-September 2; Burlington, VT. Golden, CO: National Renewable Energy Laboratory: 302-308. Volume 1. |
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Abstract
This paper reviews several machine combinations for harvesting short-rotation, intensive-culture (SRIC) plantations. Productivity and cost information for individual machines was obtained from published sources. Three felling and skidding systems were analyzed for two stands, a 7.6-cm (3-in) average d.b.h. sycamore and a 15.2-cm (6-in) average d.b.h. eucalyptus. The analyses assumed that whole trees were chipped at roadside.Costs and production were summarized for each system. The systems were: (1) Continuous-travel feller-buncher, skidder, and chipper; (2) 3-wheel feller-buncher, skidder, and chipper; (3) chainsaw, skidder, and chipper. In the 7.6-cm stand, system productivities were 9.9, 7.3, and 7.5 BDLT/SMH, and costs were $20.9, $20.8, and $18.0 per BDLT for the three systems, respectively. System production rates for the 15.2-cm stand were 24.3, 10.2, and 12.5 BDLT/SMH, and costs were $8.7, $10.9, and $13.2 for systems 1, 2, and 3, respectively.