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Dear Angie,<br>
<br>
Please send me a copy of your report when it is available.<br>
<br>
Thank you,<br>
<br>
David Fulford<br>
<br>
On 13/01/2011 22:42, Marie wrote:
<blockquote cite="mid:BLU0-SMTP70AEF1EACA8BA4AAF6B827E4F00@phx.gbl"
type="cite">
<div><br>
<br>
All,</div>
<div>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. </div>
<div><br>
</div>
<div>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. </div>
<div><br>
</div>
<div>If you are interested in the report, let me know and I can
send a link/copy when it is published. </div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Angie Bywater</div>
<div><br>
</div>
</blockquote>
<br>
<div class="moz-signature">-- <br>
<p 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> </p>
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