Small and smaller new challenges and solutions for moving smallwood
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Small and Smaller: New challenges and solutions for moving smallwood. Bob Rummer US Forest Service Auburn, AL. Outline. Anticipating smallwood challenges Merchandizing Smallwood harvesting Smallest wood (biomass) harvesting. Smallwood. Reduction in available supply of larger trees

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Small and Smaller: New challenges and solutions for moving smallwood

Bob Rummer

US Forest Service

Auburn, AL


Outline

  • Anticipating smallwood challenges

  • Merchandizing

  • Smallwood harvesting

  • Smallest wood (biomass) harvesting


Smallwood

  • Reduction in available supply of larger trees

  • Fuel reduction

  • Adaptation

Idaho City, ID


Significant Trends

  • Fire

  • I&D


Significant Trends

  • Security

  • Economic impacts

  • Environmental


Its all about the green …

Photo: Barry Wynsma


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


Example


Renewable Oil Int’l Bio-oil

Assume: GreenGas $1.75/gal


Example


Expensive to work with smallwood

  • Driven by volume/piece

  • Underutilization of equipment


Solutions

  • Match equipment to task

  • Accumulate/pre-bunch


Felling, Processing, Piling Cost

$/ton

140

Mechanized

120

100

80

60

40

Manual

20

0

0

2

4

6

8

10

dbh (in)


Payload is key


Add the money


More efficient alternatives

  • Mulching

  • Piling

Photo: Don Peterson

Photo: Barry Wynsma


Integrated product recovery

“The cheapest way to get the 4” stick is when it is attached to an 8” stick.” Steve Aulerich


Integrated recovery


Recovery of energy wood

Harvest Cost

Rec. Vol

$10/gt

$7.50/gt

$9/gt

50%

85%

84%

Conventional

One-pass energywood

Two-pass energywood


What about something new?


Improve efficiency: Harwarders

  • Several designs

  • Reduced handling

  • Low-impact

Valmet 801 Combi


2nd Thin

Final harvest

CTL

Dual

Combi

CTL

Dual

Combi

Performance

Min/m3

20

1st Thin

18

16

14

12

Site Move

10

Forward

8

Harvest

6

4

2

0

CTL

Dual

Combi


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


TimberPro TF 820-E

  • 250 to 300 hp

  • 23’ reach w/6’

  • 10.5’ wide, 33’ long

  • 52000 lbs

  • $460K

  • Dual technology


What if your skidder was never empty?

Improve efficiency: cycle time

Photo: MTDC


Increasing recovery of residues


Forwarding residues, Flagstaff, AZ

Low density


Improve payload


Improve payload

  • 14 ton forwarder

  • 9 ton payload

  • ~$90,000

Continental Biomass Industries

BTS-1


Improve payload

Photo: Dan Len


Photo: BLM, Alturas


Swath harvesters

Nicholson-Koch Mobile Chipharvester, 1980


Merchandizing energy

  • Product is btu’s

  • Unique spec’s


Energy value includes …

  • Energy inputs

  • Emissions


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


The Future


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