<html><head></head><body text="#000000" bgcolor="#FFFFFF" data-blackberry-caret-color="#00a8df" style="background-color: rgb(255, 255, 255); line-height: initial;"><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><span style="font-size: initial; line-height: initial; text-align: initial; font-family: Calibri, 'Slate Pro', sans-serif;" name="BB10" caretmarkerset="INVALID" class="markedForCaretMarkerRemoval"></span><br name="BB10" caretmarkerset="INVALID" class="markedForCaretMarkerRemoval"></div> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br style="display:initial"></div> <div style="font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Sent from my BlackBerry 10 smartphone.</div> Dear Jason and Lloyd <div><br></div><div>The downdraft combustor can be very clean burning, it is agreed. A biomass burning DD stove was produced in Swaziland and test marketed around Johannesburg in 2004-2005. It had a retrofit combustor that had an additional feature which was that the gas outlet was angled. This allowed the insert to be rotated with respect to the stove body sending the hottest gases directly against the side wall for heating or against the side of a sunken pot for high efficiency cooking. </div><div><br></div><div>The insert wa<br><div style="background-color: rgb(255, 255, 255);">
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<div>Jason,<br>
<br>
I've taken a look at your website and the info about the
"IntensiFire", however one of the main points of the project will
be to produce biochar (for use with the compost that they are
already making). If the IntensiFire is only meant to increase
efficiency and to reduce emissions for wooid burning stoves, this
may not be quite what we are looking for, although it might be
possible to "adapt" the IntensiFire to the application in some way
[?] (in order to maximize the efficiency and minimize the
emissions) ~ although the total cost might be quite prohibitive,
given that the IntensiFire (Mk II) is already starting at $499 NZD
(not including shipping all the way from NZ to Canada).<br>
I will, however, keep your downdraft technology in mind as we
move forward with our project.<br>
<br>
Regards,<br>
<pre class="moz-signature" cols="72"> Lloyd Helferty, Engineering Technologist
Principal, Biochar Consulting (Canada)
<a class="moz-txt-link-abbreviated" href="http://www.biochar-consulting.ca">www.biochar-consulting.ca</a>
48 Suncrest Blvd, Thornhill, ON, Canada
905-707-8754
CELL: 647-886-8754
Skype: lloyd.helferty
Steering Committee coordinator
Canadian Biochar Initiative (CBI)
CURRENTS, A working group of Science for Peace
<a class="moz-txt-link-freetext" href="http://www.scienceforpeace.ca/currents/">http://www.scienceforpeace.ca/currents/</a>
President, Co-founder & CBI Liaison, Biochar-Ontario
National Office, Canadian Carbon Farming Initiative (CCFI)
Organizing team member, 2013 N/A Biochar Symposium:
<a class="moz-txt-link-abbreviated" href="http://www.carbon-negative.us/symposium">www.carbon-negative.us/symposium</a>
Member of the Don Watershed Regeneration Council (DWRC)
Manager, Biochar Offsets Group:
<a class="moz-txt-link-freetext" href="http://www.linkedin.com/groups?home=&gid=2446475">http://www.linkedin.com/groups?home=&gid=2446475</a>
Advisory Committee Member, IBI
<a class="moz-txt-link-freetext" href="http://www.linkedin.com/groups?gid=1404717">http://www.linkedin.com/groups?gid=1404717</a>
<a class="moz-txt-link-freetext" href="http://www.facebook.com/group.php?gid=42237506675">http://www.facebook.com/group.php?gid=42237506675</a>
<a class="moz-txt-link-freetext" href="http://groups.google.com/group/biochar-ontario">http://groups.google.com/group/biochar-ontario</a>
<a class="moz-txt-link-freetext" href="http://www.meetup.com/biocharontario/">http://www.meetup.com/biocharontario/</a>
<a class="moz-txt-link-freetext" href="http://www.biocharontario.ca">http://www.biocharontario.ca</a>
<a class="moz-txt-link-abbreviated" href="http://www.biochar.ca">www.biochar.ca</a>
"Producing twice as much food with diminishing resources, without further loss of natural habitats and biodiversity and in a changing climate may be the greatest challenge facing humanity."
- Lloyd Helferty</pre>
On 2014-05-20 5:28 PM, Jason wrote:<br>
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<div>Dear Lloyd,<br>
<br>
</div>
what you require sounds like a possible application for
the IntensiFire.<br>
<br>
I can't promise you open source or off the shelf, or even
the capacity yet to build what you are after. Probably
won't get much biochar either.<br>
<br>
</div>
What I can offer is super clean combustion (zero CO and
possibly zero PM10) particularly with auger fed fuel to keep
combustion in the sweet spot. I have also built a prototype
woodstove that will burn green wood with no visible smoke.<br>
<br>
</div>
<div><br>
</div>
Kind Regards<br>
<br>
</div>
Jason<br>
<a moz-do-not-send="true" href="http://www.intensifire.co.nz/">http://www.intensifire.co.nz/</a><br>
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<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, May 21, 2014 at 7:14 AM, Lloyd
Helferty wrote:<br>
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<div>Crispin (and all), [CC; gasification list]<br>
<br>
This is a very interesting conversation regarding ND
TLUD power (heat) variability and its implications, and
(as you know) I do have a keen interest in this topic
since being introduced to the TLUD 'stove' concept back
several years ago (by Dr. Anderson, when he came to
Ontario to demonstrate his small "Champion" stove and
similar devices at the Laepple farm in June 2009),
especially since the TLUD is one of the few simple
technologies that can produce biochar cleanly at a small
(or possibly at a medium) scale for local use ~ while
producing (hopefully) useful amounts of energy (heat).<br>
<br>
What I am working on right now here in Toronto might
interest you or others on this list.<br>
I have been approached by a business in Toronto that
would like to be able to implement a small-scale
char-making technology at their manufacturing site in
the Toronto area (GTA) that would utilize the (dry)
'residuals' from their food production process in order
to make heat energy that could lower their (fossil)
energy use [natural gas costs] while also turning their
(dry) 'food waste' into a biochar (and/or high-char ash)
that could be re-integrated back into a (wet) food
composting system (vermicompost) that is already being
implemented onsite at their operations here in the city.<br>
<br>
The primary use of the heat would be to heat up water,
but it would also be welcome if it could be used in the
preparation of the 'raw' food (drying, roasting certain
products to a certain temperature -- i.e. an 'oven')
that goes into their recipes, which includes
'fair-trade' sourced (temperate and tropical) foodstuffs
that have been either grown or imported into Canada in
bulk, and which are prepared on-site (including
de-hulling etc. of several of the key ingredients).<br>
Essentially, this company would like to know if it
might be possible to come up with either a "customized"
or an "off-the-shelf" system that has a fairly small
footprint (about the size of a <a moz-do-not-send="true" href="http://en.wikipedia.org/wiki/Pallet#Dimensions" target="_blank">shipping pallet</a>, or ~16 sq. ft =
40" × 48", as commonly used in the food industry) that
would be able to meet the following requirements:<br>
<br>
<ul>
<li>Provides space heating and/or hot water heating
(for their kitchen), with the possibility also for
using the heat for "roasting" their ingredients (@
~140 Celsius max. -- possibly using a heat
exchanger, if necessary).</li>
<li>something flexible and rugged</li>
<li>can accept multiple fuel inputs (different sized
feedstocks, different moisture/energy content -- not
just woodchips)</li>
<li>no smoky emissions (after-burner, if necessary) so
that it can meet local emissions regs<br>
</li>
</ul>
<br>
Of course they are interested also in custom of
"commercial" gasifiers [as well], but small systems
(stoves) that could do the job they are seeking might
suffice, although they probably want the system to be as
automated (hands off) as possible to that the minimum
amount of human intervention is required... although it
would need to be as low-cost as possible (almost a "DIY"
system -- they could actually make it themselves since
they do have some expertise, including a machinist &
a "master builder" who has built and operated a series
of gassifier stoves for several years and "who is more
than capable of manufacturing" something -- if they had
the 'plans' for an open-source system/design that could
do the job).<br>
<br>
Ideally this company would be interested in seeing 2 or
3 designs that might work for them (a few devices that
they could initially assess)... so that they could work
with the designers to get more details. They would then
choose a final design that they would then incorporate
into their head office (operations), but then possibly
also into a "franchise system" that they are designing
(and that would operate like a "food truck" would in <i>any</i>
city ~ except instead of the truck being electricity or
natural gas or propane-powered, the 'portable' food
production/processing system would operate partially off
of its own 'waste'... and/or wood chips [or pellets]
that could be produced or supplied locally ~ possibly
even from chipped shipping pallets that have <i>only</i>
transported food products -- i.e. clean, 'food-grade'
"green waste" like the type that can be found at the
back of nearly every supermarket in the country...
including all the broken ones.)<br>
<br>
<shipping pallets photo><br>
<br>
Regards,<br>
<pre cols="72"> Lloyd Helferty
</pre>
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