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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I would be interested in seeing the report as others would. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Arial","sans-serif";color:#1F497D'>Pat Coleman, PhD PEng</span></b><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <br>
</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Pat.F.Coleman@aecom.com</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'> <br>
</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Manager of Process Technology - Wastewater Treatment<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>AECOM.</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> <br>
<br>
</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>T:
905.712.7025 Mississauga </span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>(leave a message and it will be emailed to me wherever I am)<br>
</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>T.</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> 905.747.7595 Markham<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#1F497D'>C. 647.637.2898 </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><br>
</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>www.aecom.com</span><span lang=EN-US style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-US
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> digestion-bounces@lists.bioenergylists.org
[mailto:digestion-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Marie<br>
<b>Sent:</b> Thursday, January 13, 2011 5:42 PM<br>
<b>To:</b> For Discussion of Anaerobic Digestion<br>
<b>Cc:</b> digestion@lists.bioenergylists.org<br>
<b>Subject:</b> Re: [Digestion] Small Digester and Rankine Engine Questions<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><br>
<br>
All,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>I am currently doing a report on approximately 20 small
scale UK farm digesters, looking at various parameters and what makes a
successful digester installation. Current 'industry' thinking is that digesters
at this scale are not economically viable. However, the smallest of these
has been running successfully for 20 years on an organic farm with 65 cows,
saving thousands by using the gas to heat the house and diary washings.
The average Uk dairy herd is about 112 cows. Another one here has been
running for more than 20 years, heating a very large manor house. Another
interesting digester running for more than two years digesting slurry from cows
bedded on woodchip and sand,, as well as chicken muck. It has an automatic
degritting system and the digester does not have to be stopped. <o:p></o:p></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
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<div>
<p class=MsoNormal>At this scale, the reason for the success of these systems
are that they separate the digestate which comes out of the digester, they use
inexpensive and easily maintained gas mixing which means a low parasitic load
(one is as little as 1watt/cubic meter), the loading is typically simple auger
or gravity feed straight into the digester, the control system is very simple
and the digester is integrated into the farmyard. Suitable cast iron boilers
have lasted for 20 years and are still running. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>If you are interested in the report, let me know and I can
send a link/copy when it is published. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Regards<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Angie Bywater<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
On 13 Jan 2011, at 17:16, <<a href="mailto:armoss@umd.edu">armoss@umd.edu</a>>un
wrote:<o:p></o:p></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal>Charles-<br>
There's at least one small-scale digester of that size currently operating in
the U.S. - at the USDA Beltsville Agricultural Research Center in Beltsville,
MD. The dairy's herd size is roughly 125-130, with ~100 milking and
producing manure at any given time (dry cattle are let out to pasture).
The digester was built in 1994 and was constructed as a continuous stirred-tank
reactor. I have tentative plans to conduct research on this digester
simultaneously with a low-cost, pilot-scale digester project operating on the
same waste-stream that's being constructed by our lab group at the University
of Maryland. I don't have intimate knowledge of the USDA CSTR's history,
but I can tell you what I know.<br>
<br>
The digester was originally constructed for odor control as an upright,
cylindrical concrete tank (I'm not sure enough of the designed HRT to give you
information on it), and was later insulated with gunnite-coated
styrofoam. It operates on mechanically screw-press separated, scraped
waste, and utilizes the biogas produced to power a boiler that circulates hot
water through a conveyance system installed within the digester for
heating; a combined heat and power electric generator was installed in
the mid-2000s, but it has never been brought online. The digester's had a
number of problems come up, including repeated clogging of the supply lines
(originally 3-4" ID, now 6"), the break down of the screw-press
separator and supply pumps, and the corrosion of the boiler due to inadequate
scrubbing. To be fair, many of the problems associated with the digester
are the result of fluctuating research interest, funds, management, and the
lack of an effective biogas scrubbing system, but they exist all the
same. Currently, the digester is up and operating... although obviously
not ideally.<br>
<br>
Although most of the digestion systems are covered lagoons, the <a
href="http://epa.gov/agstar/projects/index.html">AgSTAR website</a> contains a
link to a Excel file detailing the digesters currently registered in the EPA's
system (look under "Farm Project Profiles"). A few of them
approximate the herd numbers you're interested in.<br>
<br>
As a side note, our research at the University of Maryland, together with
research at Ohio State and the University of Wisconsin, is attempting to introduce
smaller-scale, lower-cost systems in the U.S. I gave a presentation in
October on small-scale digestion and some of the current efforts that you can
find <a href="http://www.jgpress.com/biocycleenergy/pres_tue/Moss_bcre10_s.pdf">here</a>.<br>
<br>
Good luck hunting!<br>
<br>
-Andy <o:p></o:p></p>
<div><pre>Andrew R. Moss<o:p></o:p></pre><pre>Sustainable Agriculture Research & Education Fellow<o:p></o:p></pre><pre>University of Maryland Dept. of Environmental Science and Technology<o:p></o:p></pre><pre>1445 Animal Sci./Ag. Engineering (Bldg. 142)<o:p></o:p></pre><pre>University of Maryland, College Park, MD 20742<o:p></o:p></pre><pre>Phone: (865) 363-5535<o:p></o:p></pre><pre><o:p> </o:p></pre></div>
<p class=MsoNormal><br>
---- Original message ----<o:p></o:p></p>
<p class=MsoNormal><b>Date:</b> Wed, 12 Jan 2011 12:00:06 -0800<br>
<b>From:</b> <<a href="mailto:digestion-request@lists.bioenergylists.org">digestion-request@lists.bioenergylists.org</a>><br>
<b>Subject:</b> Digestion Digest, Vol 5, Issue 5<br>
<b>To:</b> <<a href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>><br>
<br>
>Send Digestion mailing list submissions to<br>
> <a href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a><br>
><br>
>To subscribe or unsubscribe via the World Wide Web, visit<br>
> <a
href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a><br>
><br>
>or, via email, send a message with subject or body 'help' to<br>
> <a href="mailto:digestion-request@lists.bioenergylists.org">digestion-request@lists.bioenergylists.org</a><br>
><br>
>You can reach the person managing the list at<br>
> <a href="mailto:digestion-owner@lists.bioenergylists.org">digestion-owner@lists.bioenergylists.org</a><br>
><br>
>When replying, please edit your Subject line so it is more specific<br>
>than "Re: Contents of Digestion digest..."<br>
>________________ >Today's Topics: > > 1. Small Digester and
Rankine Engine Questions (Gould, Merrill) > 2. Re: 250kW hot water biogas
boiler (Ian Bywater) > 3. Re: Small Digester and Rankin Engine Questions
(Randy Mott) > 4. Re: Small Digester and Rankin Engine Questions (Sam
Wampler) > 5. Re: Small Digester and Rankine Engine Questions (David
Fulford) >________________ >Date: Tue, 11 Jan 2011 17:07:41 +0000
>From: "Gould, Merrill" <<a href="mailto:gouldm@anr.msu.edu">gouldm@anr.msu.edu</a>>
>Subject: [Digestion] Small Digester and Rankine Engine Questions >To:
"<a href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>"
<<a href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>>
> <br>
<br>
<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Greetings:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
have two questions I am hoping someone has answers for:<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>1.<span style='font-size:
7.0pt'> </span>Are there small farms with
digesters in the United States? When I say small farm I don’t mean 2-3 cows, I
mean a farm with around 125 dairy cows, which is the average herd size in
Michigan. If so, where are they and what has been their experience with their
digester? I suspect there probably are no small farms with digesters in the US,
but I would really like to know. I have had numerous inquiries from farmers
with small farms in West Michigan about putting in a digester on their farm. If
my assumption is correct that there are no small farms with digesters, are
there farms with comparable numbers of dairy cattle with digesters outside of
the United State? If so, where are they and what has their experience been with
their digester?<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>2.<span style='font-size:
7.0pt'> </span>Has anyone had experience
using a Rankine engine as part of an energy producing system?<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks
in advance for any insight you can provide me.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Charles
Gould<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Michigan
State University Extension<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>West
Olive, Michigan<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<p class=MsoNormal>>________________ >Date: Fri, 7 Jan 2011 20:51:07
+1300 >From: Ian Bywater <<a
href="mailto:ian.bywater@naturalsystems.co.nz">ian.bywater@naturalsystems.co.nz</a>>
>Subject: Re: [Digestion] 250kW hot water biogas boiler >To: For
Discussion of Anaerobic Digestion <<a
href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>>
> <br>
Hi Edward,<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>I know a boiler expert here in Christchurch, New Zealand
that I'm sure has the right expertise and can help.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Ian Bywater<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal>On 7/01/2011, at 8:42 PM, Edward Matos wrote:<o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
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<div>
<div>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>A
milk processing company in our vicinity (Tanga, Tanzania) has had a lasting
interest in converting its milk pasteurising process from running on propane to
running on biogas. I am doing them a little favour by helping them to make a
feasibility study and find the right people that will make this happen.
Unfortunately I have very little experience in biogas combustion and would like
to find out if anyone here is/knows someone who could help us on this subject.<o:p></o:p></span></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
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<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>_________________<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>Director, Natural Systems
Limited<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>(Unit 5B/ 3 Settlers
Crescent)<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>PO Box 41032<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>Christchurch 8247<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>New Zealand<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'><br>
<img border=0 width=80 height=80 id="_x0030_709b3df-a13f-4e76-9136-36e88581ab16"
src="cid:4280EC3B-9D12-4889-939C-764AC795F30B@gateway.2wire.net"></span><span
class=apple-style-span><o:p></o:p></span></p>
<div>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'><br>
<br>
T +64(0)3</span><span class=apple-converted-space><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'> </span></span><span
class=apple-style-span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>376 5549</span></span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>M +64(0)27 579 6333<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>F +64(0)3 365 4146<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>S bywateri<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>W <a href="http://www.naturalsystems.co.nz">www.naturalsystems.co.nz</a><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>The Most Exciting Green Technology Company in New Zealand (NBR
2008)<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>Bayer Innovators Award finalist, 2010, Agriculture and Environment
category<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span class=apple-style-span><span style='font-size:9.0pt;
font-family:"Helvetica","sans-serif";color:black'>NZ patent 530362</span></span><span
style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'><br>
<br>
<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:24.0pt;font-family:"Helvetica","sans-serif";
color:#317D12'><br>
<br>
</span></b><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'><br>
<br>
<br>
<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal><br>
>________________ >Date: Wed, 12 Jan 2011 08:50:57 +0100 >From:
"Randy Mott" <<a href="mailto:randymott@ceeres.eu">randymott@ceeres.eu</a>>
>Subject: Re: [Digestion] Small Digester and Rankin Engine Questions >To:
"'For Discussion of Anaerobic Digestion'" <<a
href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>>
> <br>
<br>
<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>We don’t do projects in the US, but my understanding is
that 500 cows is a rule of thumb. I have some literature….</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>On Rankin cycle engines, we have followed it closely in
Europe and the US. There is about 15% more electricity that can come from the
heat exhaust of the initial generators. The capex is about 1250 Euro/kW. We
don’t have much incentive to do it in Poland since we sell the heat and also
obtain a co-generation certificate for each MWe. </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>GE Jenbacher is doing some development in Europe and
eventually, I believe, will be trying to offer this as an option on its
generators.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Randy Mott</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>CEERES</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Warsaw</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</a>
[mailto:digestion-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Gould,
Merrill<br>
<b>Sent:</b> Tuesday, January 11, 2011 6:08 PM<br>
<b>To:</b> <a href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a><br>
<b>Subject:</b> [Digestion] Small Digester and Rankine Engine Questions</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Greetings:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
have two questions I am hoping someone has answers for:<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>1.<span style='font-size:
7.0pt'> </span>Are there small farms with
digesters in the United States? When I say small farm I don’t mean 2-3 cows, I
mean a farm with around 125 dairy cows, which is the average herd size in
Michigan. If so, where are they and what has been their experience with their
digester? I suspect there probably are no small farms with digesters in the US,
but I would really like to know. I have had numerous inquiries from farmers with
small farms in West Michigan about putting in a digester on their farm. If my
assumption is correct that there are no small farms with digesters, are there
farms with comparable numbers of dairy cattle with digesters outside of the
United State? If so, where are they and what has their experience been with
their digester?<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>2.<span style='font-size:
7.0pt'> </span>Has anyone had experience
using a Rankine engine as part of an energy producing system?<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks
in advance for any insight you can provide me.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Charles
Gould<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Michigan
State University Extension<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>West
Olive, Michigan<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<p class=MsoNormal>>________________ >Date: Wed, 12 Jan 2011 05:20:28
-0800 >From: Sam Wampler <<a href="mailto:smwampler@avatarenergy.com">smwampler@avatarenergy.com</a>>
>Subject: Re: [Digestion] Small Digester and Rankin Engine Questions >To:
For Discussion of Anaerobic Digestion <<a
href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>>
> <br>
<br>
<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
name="_MailEndCompose"><span style='color:#1F497D'>Nick,</span></a><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Why don’t you have Kevin answer the below question about
a small digester.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Sam</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<table class=MsoNormalTable border=0 cellpadding=0 width="30%"
style='width:30.52%'>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'><img border=0 width=118 height=27 id="_x0000_i1030"
src="cid:image001.gif@01CBB231.90166700"
alt="Description: http://www.avatarenergy.com/images/logos/sam.GIF"></span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'><img border=0 width=139 height=25 id="_x0000_i1029"
src="cid:image002.gif@01CBB231.90166700"
alt="Description: http://www.avatarenergy.com/images/logos/emaillogo.gif"></span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
href="mailto:smwampler@avatarenergy.com" target="_blank"><span
style='font-size:9.0pt;font-family:"Cambria","serif";color:black;text-decoration:
none'><img border=0 width=15 height=10 id="_x0000_i1028"
src="cid:image003.gif@01CBB231.90166700"
alt="Description: http://www.avatarenergy.com/images/logos/email_icon.gif">
</span></a><a href="mailto:smwampler@avatarenergy.com" target="_blank"><span
style='font-size:9.0pt;font-family:"Cambria","serif";color:black'>smwampler@avatarenergy.com</span></a><span
style='font-size:9.0pt;font-family:"Cambria","serif";color:#1F497D'> </span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
href="http://www.avatarenergy.com" target="_blank"><span style='font-size:
9.0pt;font-family:"Cambria","serif";color:black;text-decoration:none'><img
border=0 width=15 height=14 id="_x0000_i1027"
src="cid:image004.gif@01CBB231.90166700"
alt="Description: http://www.avatarenergy.com/images/logos/web_icon.gif">
</span><span style='font-size:9.0pt;font-family:"Cambria","serif";color:black'>www.avatarenergy.com</span></a><span
style='font-size:9.0pt;font-family:"Cambria","serif";color:#1F497D'> </span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;font-family:"Cambria","serif";color:#1F497D'><img
border=0 width=18 height=10 id="_x0000_i1026"
src="cid:image005.gif@01CBB231.90166700"
alt="Description: http://www.avatarenergy.com/images/logos/cell_icon.gif">336.446.9305
(Google Voice)</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;font-family:"Cambria","serif";color:#1F497D'><img
border=0 width=18 height=10 id="_x0000_i1025"
src="cid:image005.gif@01CBB231.90166700"
alt="Description: http://www.avatarenergy.com/images/logos/cell_icon.gif">336.824.1389
(fax)</span><o:p></o:p></p>
</td>
</tr>
</table>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:7.5pt;font-family:"Cambria","serif";color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:7.5pt;font-family:"Cambria","serif";color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:7.5pt;font-family:"Cambria","serif";color:#1F497D'>Confidential
Information<br>
The information contained in this email message is intended only for the
personal and confidential use of the recipient(s) named above. This message may
be privileged and confidential and protected from disclosure. If the reader of
this message is not the intended recipient or an agent responsible for
delivering it to the intended recipient, you are hereby notified that you have
received this document in error and that any review, dissemination,
distribution, or copying of this message is strictly prohibited. If you have
received this communication in error, please notify us immediately by email,
and delete the original message.</span><span style='color:#1F497D'><br>
</span><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</a>
[mailto:digestion-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Randy
Mott<br>
<b>Sent:</b> Wednesday, January 12, 2011 2:51 AM<br>
<b>To:</b> 'For Discussion of Anaerobic Digestion'<br>
<b>Subject:</b> Re: [Digestion] Small Digester and Rankin Engine Questions</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>We don’t do projects in the US, but my understanding is
that 500 cows is a rule of thumb. I have some literature….</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>On Rankin cycle engines, we have followed it closely in
Europe and the US. There is about 15% more electricity that can come from the
heat exhaust of the initial generators. The capex is about 1250 Euro/kW. We
don’t have much incentive to do it in Poland since we sell the heat and also
obtain a co-generation certificate for each MWe. </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>GE Jenbacher is doing some development in Europe and eventually,
I believe, will be trying to offer this as an option on its generators.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Randy Mott</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>CEERES</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Warsaw</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</a>
[mailto:digestion-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Gould,
Merrill<br>
<b>Sent:</b> Tuesday, January 11, 2011 6:08 PM<br>
<b>To:</b> <a href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a><br>
<b>Subject:</b> [Digestion] Small Digester and Rankine Engine Questions</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Greetings:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
have two questions I am hoping someone has answers for:<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>1.<span style='font-size:
7.0pt'> </span>Are there small farms with
digesters in the United States? When I say small farm I don’t mean 2-3 cows, I
mean a farm with around 125 dairy cows, which is the average herd size in
Michigan. If so, where are they and what has been their experience with their
digester? I suspect there probably are no small farms with digesters in the US,
but I would really like to know. I have had numerous inquiries from farmers
with small farms in West Michigan about putting in a digester on their farm. If
my assumption is correct that there are no small farms with digesters, are
there farms with comparable numbers of dairy cattle with digesters outside of
the United State? If so, where are they and what has their experience been with
their digester?<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>2.<span style='font-size:
7.0pt'> </span>Has anyone had experience
using a Rankine engine as part of an energy producing system?<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks
in advance for any insight you can provide me.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Charles
Gould<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Michigan
State University Extension<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>West
Olive, Michigan<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<p class=MsoNormal>>________________ >Date: Wed, 12 Jan 2011 16:22:12
+0000 >From: David Fulford <<a href="mailto:davidf@kingdombio.com">davidf@kingdombio.com</a>>
>Subject: Re: [Digestion] Small Digester and Rankine Engine Questions
>To: For Discussion of Anaerobic Digestion <<a
href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</a>>
>Cc: "Gould, Merrill" <<a href="mailto:gouldm@anr.msu.edu">gouldm@anr.msu.edu</a>>
> <br>
Charles and listers,<br>
<br>
The best source of information on AD in USA is the AgSTAR project run by EPA (<a
href="http://www.epa.gov/agstar/">www.epa.gov/agstar/</a>). They have a
database of digesters, which includes a few small ones. <br>
<br>
They point to the Minnesota Project (<a href="http://www.mnproject.org">www.mnproject.org</a>)
which is trying to concentrate on biogas for small farms (125 cattle or less).<br>
<br>
Regards,<br>
<br>
David F<br>
<br>
On 11/01/2011 17:07, Gould, Merrill wrote: <o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Greetings:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
have two questions I am hoping someone has answers for:<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>1.
Are there small farms with digesters in the United States? When I say small
farm I don’t mean 2-3 cows, I mean a farm with around 125 dairy cows, which is
the average herd size in Michigan. If so, where are they and what has been
their experience with their digester? I suspect there probably are no small
farms with digesters in the US, but I would really like to know. I have had
numerous inquiries from farmers with small farms in West Michigan about putting
in a digester on their farm. If my assumption is correct that there are no small
farms with digesters, are there farms with comparable numbers of dairy cattle
with digesters outside of the United State? If so, where are they and what has
their experience been with their digester?<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>2.
Has anyone had experience using a Rankine engine as part of an energy producing
system?<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks
in advance for any insight you can provide me.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Charles
Gould<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Michigan
State University Extension<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>West
Olive, Michigan<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>Digestion mailing list<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>to Send a Message to the list, use the email address<o:p></o:p></pre><pre><a
href="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>to UNSUBSCRIBE or Change your List Settings use the web page<o:p></o:p></pre><pre><a
href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>for more information about digestion, see<o:p></o:p></pre><pre>Beginner's Guide to Biogas<o:p></o:p></pre><pre><a
href="http://www.adelaide.edu.au/biogas/">http://www.adelaide.edu.au/biogas/</a><o:p></o:p></pre><pre>and the Biogas Wiki <a
href="http://biogas.wikispaces.com/">http://biogas.wikispaces.com/</a><o:p></o:p></pre><pre><o:p> </o:p></pre>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>-- <o:p></o:p></p>
<p align=center style='text-align:center'>********************************************************************<br>
Dr David Fulford CEnv MEI, 15, Brandon Ave, Woodley, Reading RG5 4PU <br>
<a href="mailto:d.j.fulford@btinternet.com">d.j.fulford@btinternet.com</a>,
Tel: +44(0)118 326 9779 Mob: +44(0)7746 806401 <br>
Kingdom Bioenergy Ltd, <a href="http://www.kingdombio.com">www.kingdombio.com</a>,
<a href="mailto:davidf@kindombio.com">davidf@kindombio.com</a> <o:p></o:p></p>
</div>
<p class=MsoNormal>>________________
>_______________________________________________ >Digestion mailing list
> >to Send a Message to the list, use the email address ><a
href="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</a>
> >to UNSUBSCRIBE or Change your List Settings use the web page ><a
href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a>
> >for more information about digestion, see >Beginner's Guide to
Biogas ><a href="http://www.adelaide.edu.au/biogas/">http://www.adelaide.edu.au/biogas/</a>
>and the Biogas Wiki <a href="http://biogas.wikispaces.com/">http://biogas.wikispaces.com/</a>
> <o:p></o:p></p>
</div>
</blockquote>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br>
Digestion mailing list<br>
<br>
to Send a Message to the list, use the email address<br>
<a href="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</a><br>
<br>
to UNSUBSCRIBE or Change your List Settings use the web page<br>
<a
href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a><br>
<br>
for more information about digestion, see<br>
Beginner's Guide to Biogas<br>
<a href="http://www.adelaide.edu.au/biogas/">http://www.adelaide.edu.au/biogas/</a><br>
and the Biogas Wiki <a href="http://biogas.wikispaces.com/">http://biogas.wikispaces.com/</a><o:p></o:p></p>
</div>
</blockquote>
</div>
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