Performance of a Small Eucalypt Log Sawmill: Work Productivity, Operational Efficiency and Lumber Yield

Salvador, Fernando Moreli; Gomes, Felipe da Silva; Silva, João Gabriel Missia da; Batista, Djeison César

doi:10.37885/201102011

Cited by 2 publications

(1 citation statement)

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“…Sawmill production residue can account for approximately 55% of the log charge [19], which obviously depends on the log diameter, the sawing pattern, workers' experience, etc. [20]. Sawmill residue can be used in the production of chipboards, fiberboards, paper pulp, cardboard, boxes, litter for farm animals or compost [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Wood Chip Production Efficiency Depending on Chipper Type

et al. 2023

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Solid biofuels, including wood chips, are still the most important feedstock in the structure of primary energy production from renewable energy sources. Wood chips are derived mainly from forests and the wood industry, including sawmills. However, the considerable diversity of chipper types results in great differences in their final production efficiency. The objective of this study was to analyze and evaluate the efficiency of three mobile chippers used in wood chip production by determining their throughput rate, diesel fuel and energy consumption, cost of chipping and greenhouse gas emission, as well as the quality of the chips. By far shortest time (0.82 min. Mg−1) of producing 1 Mg of wood chips was found for the Albach 565 kW chipper. Moreover, the mean time needed for the production of 1 Mg of chips with a chipper of the same make but with a smaller engine (Albach 515 kW) was 8.8% longer. This time was 284.9% longer than when the Bruks chipper was used. However, the highest mean effectiveness of diesel fuel use (expressed as the lowest diesel fuel consumption of 1.41 dm3 Mg−1), the lowest energy consumption (52.02 MJ Mg−1), the lowest cost of diesel fuel use (2.28 € Mg−1) and the lowest GHG emission (4.27 kg Mg−1 CO2eq) in wood chip production were determined for the Albach 515 kW chipper. In contrast, the poorest parameters were determined for the Bruks chipper.

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Section: Introductionmentioning

confidence: 99%

Wood Chip Production Efficiency Depending on Chipper Type

et al. 2023

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CHANGE IN THE PRODUCTION LINE FOR BETTER OPERATIONAL PERFORMANCE IN MACHINING Eucalyptus spp. WOOD

Baraldi,

Docha,

Da Rocha

et al. 2024

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The present study aims to evaluate the effect of layout modification on operational efficiency, productivity, and yield in two wood machining lines for planks, beams, rafters, boards, and battens of Eucalyptus spp. Daily production data was collected from the two machining lines over a period of 21 days, before and after the layout modification. For the calculation of operational efficiency, productivity, and yield, data on raw material volume and final product was used. The average operational efficiency of line one increased by 0.1534 m³.op.h⁻¹, and line two by 0.1850 m³.op.h⁻¹ after the layout modification. The productivity of lines one and two also increased after the restructuring, with differences of 0.1364 m³.op.h⁻¹ and 0.1099 m³.op.h⁻¹, respectively. The wood machining yield did not differ between the two lines. The results indicated production homogenization and performance improvement in wood machining.

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Performance of a Small Eucalypt Log Sawmill: Work Productivity, Operational Efficiency and Lumber Yield

Cited by 2 publications

References 0 publications

Wood Chip Production Efficiency Depending on Chipper Type

Wood Chip Production Efficiency Depending on Chipper Type

CHANGE IN THE PRODUCTION LINE FOR BETTER OPERATIONAL PERFORMANCE IN MACHINING Eucalyptus spp. WOOD

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