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<div class="moz-cite-prefix">Kelly,<br>
<br>
The short answer is; I don't know.<br>
<br>
I've found that logs moved with a forwarder are cleaner than a
stem moved with a cable skidder. So this bundling scheme should
reduce the amount of foreign matter, assuming that the bundles are
moved with a forwarder. Also, the wood bundled would be picked
where it was fell so lessing the problem. The furry critters
should attend the morning crew safety meeting.<br>
<br>
<br>
Cheers,<br>
Jeff<br>
<br>
<br>
<br>
On 09/08/2014 09:51 AM, Kelly Burnham wrote:<br>
</div>
<blockquote
cite="mid:CADy2aObG0rSegLKuYPoC3+A7_8-DkQ9V7DtWo6h177UPqJhGyQ@mail.gmail.com"
type="cite">
<p dir="ltr">Jeff,<br>
How is the separation of foreign matter (sand, rocks, furry
critters) handled in the bundling process? </p>
<p dir="ltr">Kelly</p>
<div class="gmail_quote">On Sep 6, 2014 5:30 PM, "Jeff Davis" <<a
moz-do-not-send="true" href="mailto:jeffdavis0124@gmail.com">jeffdavis0124@gmail.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">One recent
innovation involves the compaction of logging residues into
cylindrical bales called composite residue logs (CRL) or
biomass bundles (Johansson et al, 2006). CRLs are
approximately 24 inches in diameter (61cm) and 10 feet (3m)
long.<br>
<br>
<a moz-do-not-send="true"
href="https://www.youtube.com/watch?v=XZOoHUEgf8w"
target="_blank">https://www.youtube.com/watch?v=XZOoHUEgf8w</a><br>
<br>
<br>
One of the most appealing aspects of CRL is, they can be
handled similarly to round logs. Bundles are efficiently
handled and transported with conventional equipment used for
roundwood. Simple modification to the trailer may be required
depending upon CRL length and makeup. The 1490D Slash Bundler
can produce 18 to 26 bundles per hour. Cost to bundle at the
logging deck is approximately $11 to $14 per green ton. Total
cost of operations to gather, bundle and deliver is $21 to $25
per green ton. A blend of pine and hardwood offers best
economic advantages due to the amount of available material on
ground, relative ease of handling and energy content. The
calorific heat content has been measured at 10 MJ per green kg
(4300 Btu per green lb) and an energy density of 4.5 GJ per
m3. By comparison, calorific heat content of oven dry bundles
yield 19.7 MJ per ovendry kg (8500 Btu per lb).<br>
<br>
Slash bundling offers superior storing characteristics.
Private data shows that seasoning bundles (storing) for 11
months reduces moisture content to 25 percent to 30 percent
and increase energy value to 17.2 MJ per kg (7400 Btu per
pound). The post-seasoned delivered cost is $
14.50 per ton.
To date, approximately 67,280 m3 have been bundled from 15
sites in East Texas. The best comminution option appears to be
horizontal grinders at a terminal. Grinders accept bundles
easily and costs are minimized. Independent data show a
65-percent reduction in grinding costs, using a 1,500
horsepower electric motor from parasitic load of the electric
power plant for which the bundles are serving.<br>
<br>
<a moz-do-not-send="true"
href="http://www.extension.org/pages/26530/bundling-woody-biomass"
target="_blank">http://www.extension.org/pages/26530/bundling-woody-biomass</a><br>
<br>
<br>
<br>
Cheers,<br>
Jeff<br>
<br>
<br>
<br>
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