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Transcript of Small and Smaller: New challenges and solutions for moving smallwood Bob Rummer US Forest Service...
![Page 1: Small and Smaller: New challenges and solutions for moving smallwood Bob Rummer US Forest Service Auburn, AL.](https://reader034.fdocuments.net/reader034/viewer/2022050909/5697bffa1a28abf838cc0314/html5/thumbnails/1.jpg)
Small and Smaller: New challenges and solutions for moving
smallwood
Bob RummerUS Forest ServiceAuburn, AL
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Outline Anticipating smallwood challenges Merchandizing Smallwood harvesting Smallest wood (biomass) harvesting
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Smallwood Reduction in available
supply of larger trees Fuel reduction Adaptation
Idaho City, ID
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Significant Trends Fire I&D
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Significant Trends Security Economic impacts Environmental
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Its all about the green …
Photo: Barry Wynsma
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Costs define … What trees are cut (the perceived value of
the treatment) What biomass has value in the market What product sorting, processing,
merchandizing occurs
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ExampleStand Component Prescription Products
<3”3-6”6-12”topwood
Cut & leaveCut & removeSelectionRemove
NoneEnergywoodSmall sawlogEnergywood
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Assume: GreenGas $1.75/gal
Renewable Oil Int’l Bio-oil
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ExampleStand Component Prescription Products
<3”3-6”6-9”9-12”topwood
Cut & leaveCut & removeSelectionSelectionRemove
EnergywoodEnergywoodEnergywoodSmall sawlogEnergywood
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Expensive to work with smallwood Driven by volume/piece Underutilization of equipment
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Solutions Match equipment to
task Accumulate/pre-bunch
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Felling, Processing, Piling Cost
0
20
40
60
80
100
120
140
0 2 4 6 8 10dbh (in)
$/ton
Manual
Mechanized
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0
5
10
15
20
25
30
35
40
45
50
0 200 400 600 800
Dist (ft)
Cyc
le t
ime
(min
) Manual
Animal
Tractor
Skidder
Forwarder
Payload is key
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Add the money
$0.00
$5.00
$10.00
$15.00
$20.00
$25.00
$30.00
$35.00
0 200 400 600 800
Distance (ft)
$/g
t
Manual
Animal
Tractor
Skidder
Forwarder
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More efficient alternatives Mulching Piling
Photo: Don Peterson
Photo: Barry Wynsma
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Integrated product recovery
“The cheapest way to get the 4” stick is when it is attached to an 8” stick.” Steve Aulerich
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Integrated recovery
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Recovery of energy wood
ConventionalConventional
One-pass energywoodOne-pass energywood
Two-pass energywoodTwo-pass energywood
50%50%
85%85%
84%84%
Rec. VolRec. Vol
$10/gt$10/gt
$7.50/gt$7.50/gt
$9/gt$9/gt
Harvest CostHarvest Cost
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What about something new?
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Several designs Reduced handling Low-impact
Valmet 801 CombiValmet 801 Combi
Improve efficiency: Harwarders
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Performance
0
2
4
6
8
10
12
14
16
18
20
CTL Dual Combi
Site Move
Forward
Harvest
Min/m3
1st Thin
CTL Dual Combi
2nd Thin
CTL Dual Combi
Final harvest
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System Productivity Removed ~9 CCF/acre, 3.8 PMH/acre Elemental times ~16 min/CCF Gross time ~25 min/CCF Misc. elements nearly half of all operating
time Production rates similar to the
Scandinavian studies
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TimberPro TF 820-E 250 to 300 hp 23’ reach w/6’ 10.5’ wide, 33’ long 52000 lbs $460K Dual technology
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Improve efficiency: cycle time What if your skidder
was never empty?
Photo: MTDC
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Increasing recovery of residues
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Low density
Forwarding residues, Flagstaff, AZForwarding residues, Flagstaff, AZ
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Improve payload
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Improve payload
14 ton forwarder 9 ton payload ~$90,000
Continental Biomass Industries
BTS-1
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Improve payload
Photo: Dan Len
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Photo: BLM, Alturas
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Swath harvesters
Nicholson-Koch Mobile Chipharvester, 1980
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Merchandizing energy Product is btu’s Unique spec’s
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Energy value includes … Energy inputs Emissions
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Summary Changing world for smallwood recovery The smallest fraction will likely be
merchandized for energywood New technology to address barriers
Improved handling efficiency Improved payload Processing for value
Its an exciting time to be working in the woods
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The Future