Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Dan Bergström"'
Autor:
Dan Bergström
Publikováno v:
Croatian Journal of Forest Engineering, Vol 40, Iss 2, Pp 221-230 (2019)
The objective was to analyze three innovative harvesting systems for early thinnings and compare forest-to-industry supply costs. FlowConv consists of a harvester equipped with an innovative continuously cutting, accumulating and bunching head (the F
Externí odkaz:
https://doaj.org/article/d07f74423018498a8f170d92f17d407d
Publikováno v:
Silva Fennica, Vol 55, Iss 3 (2021)
Young, dense forest in Finland and Sweden urgently need to receive first thinning. In such stands, conventional selective thinning methods make the harvester work time consuming and, thus, costly. To make small-sized trees economically competitive as
Externí odkaz:
https://doaj.org/article/58b2664ff17242c1959f3a7dcc39b007
Publikováno v:
Metsätieteen aikakauskirja, Vol 2021, Iss 0 (2021)
Externí odkaz:
https://doaj.org/article/07601f48ad3d439189481e4e414ac0ce
Autor:
Kalvis Kons, Boško Blagojević, Blas Mola-Yudego, Robert Prinz, Johanna Routa, Biljana Kulisic, Bruno Gagnon, Dan Bergström
Publikováno v:
Energies, Vol 15, Iss 10, p 3721 (2022)
The use of sustainably sourced biomass is an important tool for mitigating the effects of climate change; but biomass is far from being a homogeneous resource. The aim of this study was to examine the decision-making process of industrial end-users c
Externí odkaz:
https://doaj.org/article/41fecd999ec347a587bc1d7d6652ca69
Publikováno v:
Energies, Vol 15, Iss 8, p 2953 (2022)
Minimising dry matter losses during storage of comminuted forest fuels is desirable from both an economic and a sustainability perspective. This study examined fuel quality and amount of recovered energy during the storage of forest wood chips stored
Externí odkaz:
https://doaj.org/article/f301e62c3ff74e3a85699f3138db7b70
Publikováno v:
Energies, Vol 15, Iss 5, p 1680 (2022)
There is currently great general interest in reducing the use of fossil-based materials. Fossil-based tarps are still widely used as cover for wood chip storage piles, causing additional waste or requiring further waste treatment in the supply chain.
Externí odkaz:
https://doaj.org/article/4e2abe24e27f4c2ba13996f33d12a5e7
Effect of Forest Structure on Operational Efficiency of a Bundle-Harvester System in Early Thinnings
Publikováno v:
Croatian Journal of Forest Engineering, Vol 37, Iss 1, Pp 37-49 (2016)
The objective of the study was to improve knowledge on effects of harvested tree size and density of undergrowth on the operational efficiency of a bundle-harvester that produces 2.6 m long bundles, with ca. 60–70 cm diameter, in early fuel wood th
Externí odkaz:
https://doaj.org/article/6214989415004530a60be7319ccef3f3
Publikováno v:
Croatian Journal of Forest Engineering, Vol 36, Iss 1, Pp 85-100 (2015)
The development of efficient woody biomass comminuting processes and systems is of great importance for establishing bio-refineries. Using hybrid systems, which store excess energy from a diesel engine during periods of low loading for use during pea
Externí odkaz:
https://doaj.org/article/86bc18b91a4a43aeaa2d4f93efc726a5
Publikováno v:
Croatian Journal of Forest Engineering, Vol 33, Iss 1, Pp 25-37 (2012)
Forage harvesters used in Short Rotation Willow Coppice (SRWC) plantations in Sweden suffer from an inability to efficiently harvest stems thicker than 6 – 7 cm at stump height. An alternative, when harvesting in such plantations, might be to use f
Externí odkaz:
https://doaj.org/article/800c86584f6a4d03ade0bd81236cbe01
Publikováno v:
International Journal of Forestry Research, Vol 2012 (2012)
Increasing use of woody fuels requires that nontraditional types of raw materials are exploited, including logging residues and small-diameter trees. Although medium-scale combustors often use pellets, they could conceivably use dried chips of suffic
Externí odkaz:
https://doaj.org/article/cc1c3a76840f47718bc0cba6b4e34465