Energy Matters - September/October 2000 issue Page: 2 of 8
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ENERGY MATTERS
is published bimonthly by the
U.S. Department of Energy's
(DOE) Office of Industrial
Technologies.
Information contained in the
newsletter can be reproduced
without permission provided due
acknowledgement is given (the
U.S. Department of Energy's
Energy Matters newsletter) and
a copy of the publication is
supplied to the editor.
EDITORIAL BOARD
Rob Boteler, representing
National Electrical Manufacturers
Association
Lynda Butek, representing
Electrical Apparatus Service
Association
Don Casada, OIT BestPractices
Program
Keith Davidson, Onsite Sycom
Energy
Bob Gemmer, U.S. DOE,
Process Heat
Glenn Hahn, Spirax Sarco
Fred Hart, U.S. DOE, Steam
Challenge
Chris Hunter, Johnson & Johnson
Roy Jones, representing
Compressed Air and Gas Institute
Aimee McKane, OIT
BestPractices Program
Rick Payton, Rockwell
Automation/Reliance Electric
Bill Stafford, Technical
Association of the Pulp and
Paper Industry
Chuck Whelan, DuPont
0
COMMENTS?
Contact:
Julia Oliver, DOE, at
(510) 637-1952, or e-mail
julia.oliver@oak.doe.gov
Michelle Mallory,
Energy Matters Editor, at
(303) 275-3627, or e-mail
michellesosa-mallory@nrel.gov
1617 Cole Blvd., MS 1713
Golden, CO 80401BestPractices Partnership Gives Mitt an
"Instant Efficiency Improvement"
continued from page 1
Furthermore, the hydraulic system often
broke down. "We blew apart three hy-
draulic systems during cold weather opera-
tion due to stress on the system," Brian
Lashway said.
To address both issues, McKenny and
Baldor supplied a 50 hp vector drive motor
and line regenerative vector control for
Lashway's log carriage. The new system in-
volved an electronically based regenerative
control coupled with a premium efficiency
motor, which drove the new cable drums.
The system's big advantage is that it uses
regenerative braking to recapture the mov-
ing carriage's kinetic energy. The vector
drive not only recycles the energy, but also
responds faster to the sawyer's commands,
making the entire sawing process faster,
and more efficient.
"The sawyer makes or breaks the saw
mill. Providing a system that gives the
sawyer more control over the carriage and
the logs has a huge impact on the com-
pany," said Ed Cowern, who was a district
manager for Baldor at the time of the
transition.
There were a few glitches getting the
system installed. It had to be reconfiguredI
IL
To
early on and Lashway had to construct a
room to control the temperature and envi-
ronment around the electronic controller.
"We had some problems, but that was
due more to a lack of education than any-
thing else. Even with that, we were quite
thrilled when it was installed," said
Lashway.
The elements of the system run at an
efficiency of about 95%, offering a total ef-
ficiency in the mid-80s, a 33% improve-
ment over the old system. Despite using a
carriage that was 33% heavier than the
old, Lashway actually saw energy costs go
down by $2,000 to $3,000 per year. The
local electrical utility also provided incen-
tive, paying for $9,000 of the $20,000 bill.
Furthermore, Lashway avoids the oil
changes and breakdowns all too common
to the old hydraulic system.
Overall, Lashway is very pleased. Brian
Lashway said, "This upgrade has provided
us with an instant efficiency improvement.
We've also seen substantial energy sav-
ings-because each time we're braking
we're saving." e- 1:1
- - -
" aux " - Y -2 Energy Matters, September/October 2000
Lashway Logging's new regenerative vector drive allows energy to be
recycled back into the power system.
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Mallory, M. Energy Matters - September/October 2000 issue, book, September 22, 2000; Golden, Colorado. (https://digital.library.unt.edu/ark:/67531/metadc717680/m1/2/: accessed March 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.