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Thank you for the varied responses to my engine
questions. I see in many areas the potential for cost effective CHP
systems in the 200 kWe size range. 100-200We is probably the most common
size for diesel generation in the northern tier logging and sawmill communities
from Canada-Alaska-East and NW RUssia, Scanadinavia, N Ireland and back
to the Canadian maritimes. It is a size that is probably less fequently
found, but suitable for application, in Asia, Africa and Latin America. It is
also probably a common size for LP and gas engines in remote communites in North
America. 200 kWe is a size suitable for commercial applications in North
America. Wood pellet producers are looking for new bulk markets. The
recent increase in wood pellet production in Europe (2 million tons
per year) and North America (1 million tons per year) makes a convenient
bulk fuel available at an affordable cost. (A hospital in Quebec is
burning wood pellets from Western Canada for less than $100/ton delivered.) So
fuels could include sawdust, shavings, chips, pellets,
etc.
There are several suppliers on this list that
either have delivered systems of this size or would like to. But we have very
few working examples of working gasifiers with heat recovery that are in
productive operation. There's the Volund project, Ankur, Energreen and some
others that have been mentioned. I heard that System Johannson had installed a
community CHP system in South Africa but I can not find anything about their
systems.
I'd like to develop draft specifications here
online for a 200 kWe CHP system that we could use to discuss what we
could expect in cost and performance from various parts of the system:
engine-generator, gas cleaning (wet and dry), wastewater water treatment,
gasifiers, fuel preparation and handling, heating systems, controls for various
applications, etc. I don't think anyone's business is threatened by this kind of
discussion. In fact some may find opportunities. Several companies -
Ankur, Energreen, Fluidyne, Thermogenics - have been generous in sharing
information to date. I will post any suitable links or information on
the CREST Gasification website http://www.repp.org/articles/static/1/1011975339_7.html
The biggest risk is keeping anyone on topic. This
group is more volatile than any of the fuels we're dealing
with.
Tom
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