Forest energy systems in Sweden Productivity of slash bundling at landing by a truck mounted bundler prototype Magnus Matisons Nordland Seminar Mosjön 14 April
Bulgaria Romaia Share of renewable energy & Incriese 60 50 Andel 2005 Andel 2020 Ökning Sverige 40 30 EU-27 20 10 0 United Kingdom Denmark Ireland France Germany Italy The Netherlands EU-27 Spain Greece Belgium Austria Portugal Cyprus Luxembourg Malta Finland Sweden Slovenia Hungary Lithuania Poland The Slovak Republic Latvia Estonia The Czech Republic
Forest resources in Europe Källa: FAO Finland Germany Great Britain
Total energy supply in Sweden 1970 2008 Source: STEM SCB
Energy supply in district in heating 1970-2008 Source STEM SCB
Total energy supplied to CHP and heating plants in 2008 Other 2% El 3 % Source: Svensk fjärrvärme Fossil fuel 11% Heat from industry 6% Rubbish 16% Pumps 7% Peat 6% Biogas 1% Bioenergy 48% Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Sveriges elproduktion per kraftslag 1970 2008
Electricity certificate system The electricity certificate system is a market based system to support the expansion of electricity production in Sweden from renewable energy sources and peat. Its objective is to increase, by 2016, the production of electricity from such sources by 17 TWh relative to the production level in 2002. Proposal from 1 july 2010 To increase by 25 TWh until 2035
Logistical challenge Demand of biofuels in densely populated areas But Biofuels are evenly distributed over large geographical areas
Succession in utilization First pick the low hanging fruits Price/MWh delivered to end user 300 250 200 150 100 50 0 Saw mill Roundwood Logging Stumps Young trees residues non residues industrial
Forest fuel system Available wood fuels Geographical distibution Logistical solutions Storing facilities Quality control Long term contracts End User Seasonal demand of wood fuel Quality demand Not too bad Boiler disturbanses Not too good Too expensive Competitors demand Back up boiler Peak boiler Storing facilities Environmental concern
4. GROT från slutavverkning SLU-teknologi, Allskog BA
Productivity of slash bundling at landing by a truck mounted bundler prototype Magnus Matisons Ola Lindroos, Petter Johansson & Tomas Nordfjell, SLU Umeå Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Current slash recovery systems Loose Early In-field slash comminution bundling Forest Comm. Bundling Landing Comm. Industry Comm. Comm. Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Current slash recovery systems Bundling at landing Loose Early In-field slash comminution bundling Forest Comm. Bundling Landing Bundling Comm. Industry Comm. Comm. Comm. Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Potential advantages compared to in-field bundling No off-road requirements High concentrations of slash Allows a large machine that can make large bundles at a good productivity it rate A truck based machine does not need trailer transports Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Truck based prototype Rogbico GTK 4800 Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Study Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Results: Bundle characteristics Length 47 4.7 m Diameter 08m 0.8 Volume 2.5 m 3 Raw mass Green slash 780 kg Brown slash 609 kg Dry matter mass 390 kg Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Results: Productivity 14-19 19 Bundles/E 0 h 5.2-7.8 tonnes DM/E 0 h 0 50% compression time 4 grapples/bundle Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Results: Road transport t efficiency i (truck-trailer trailer load capacity = 144 m 3, 30 tonnes) Full load: Used weight capacity Green slash 86% Brown slash 67% Dry matter 43% 33 bundles Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
System improvment possibilities Better use of truck load space longer bundles? Efficient crane work during compression continious bundles? automatic unloading? Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
Conclusions The bundling-at-landing system has a potential, but its full slash recovery chain needs to be evaluated Sveriges lantbruksuniversitet Inst för skoglig resurshushållning och geomatik
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