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<DIV><FONT face=Arial size=2>Doug,</FONT></DIV>
<DIV><FONT face=Arial size=2>you wrote,</FONT></DIV>
<DIV><STRONG>the Mk2 Mega Class gasifier was able to make enough gas to supply
nine of these engines flat out, so testing one at a time placed no stress on the
gas supply.</STRONG>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV>How do they achieve this kind of turndown ratio, apparently at least nine
to one?</DIV>
<DIV> </DIV>
<DIV>Luke Gardner</DIV></DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Doug.Williams@orcon.net.nz
href="mailto:Doug.Williams@orcon.net.nz">doug.williams</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=gasification@lists.bioenergylists.org
href="mailto:gasification@lists.bioenergylists.org">Discussion of biomass
pyrolysis and gasification</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, February 26, 2011 12:03
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Gasification] ideal wood
gas engine</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2><STRONG>Hi Henri and
Colleagues,<BR></STRONG><BR><STRONG>Henri, you advise us of the engine
details, but what is to be your application?</STRONG></FONT></DIV><FONT
face=Arial size=2><STRONG>
<DIV><BR></STRONG>My installation plans to turbo charge a 350 chev engine c/w
positive displacement pump for the gasifier</DIV>
<DIV> </DIV>
<DIV><STRONG>It would appear from making such an effort, that you do seek
performance, and I can offer a few comments that might be of interest for
further development if you have the capability.</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG>In April 2004, my associates of that time in Winnipeg were
rebuilding Chev 502 "Crate Engines" to maximize their design for producer gas.
One of the team specialized in tuning these engines for racing purposes, and
he was set up with all new Dyno equipment for the project. Apart from all the
polishing of ports, new pistons, etc, the emphasis was on the cam shafts, and
these were re-made and tested intensively making them the most expensive cam
shafts in N.America, according to the guy who was paying the bills!
</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG>There were six of these engines built, and before anyone asks, I
have no idea where they went to, due to the security breach and loss of
integrity to the whole project. I did however see them working up on the
dyno, and all I can say is that I have never seen so much grunt come out of an
engine on producer gas before at 3,200 RPM. As interesting as this may be, all
the other issues of exhaust emissions,etc, were not addressed, but only
one factor made it possible to really allow this type of test.</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG>Engines can perform outstandingly on producer gas, if purpose
built. The engine performance though, can only be attained if the gas making
process can meet the engine demand for gas without changing it's basic
standard gas analysis. In the Winnipeg project, the Mk2 Mega Class gasifier
was able to make enough gas to supply nine of these engines flat out, so
testing one at a time placed no stress on the gas supply.</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG>From a practical perspective which applies to most of us
working with producer gas, we are surrounded with perfectly good engines that
run well for most applications on producer gas. We as individuals with
specialist capability, can modify and rebuild any of these engines that push
normal performance boundaries, just the same as for liquid fuels. For the rest
of us without that talent, we can only speculate as to the potentials of doing
burn-outs down Main Street on Friday nights (:-)</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG>Now back to the wood pile (for heating).</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV>
<DIV><STRONG>Doug Williams,</STRONG></DIV>
<DIV><STRONG>Fluidyne Gasification.</STRONG></DIV>
<DIV><STRONG></STRONG> </DIV></FONT>
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