Hi,
These projects looks great, but I'm curious, if you can improve reliability
and efficiency just by lowering the moisture content in the feed, then how
come these types of systems don't incorporate a hopper design that would help
dry feed stock? Such as by recapturing the heat from the exhaust or the heat
from the engine's radiator.
Thanks
Eric
________________________________
From: Tom Miles <[email protected]>
To: Discussion of biomass pyrolysis and gasification
<[email protected]>
Sent: Saturday, 20 October 2012 5:35 PM
Subject: [Gasification] Can small wood-gas systems lower rural energy costs?
Jim Mason and mill personnel installed two All Power Labs Power Pallets – 10
kWe and 20 kWe - this week at a sawmill in SE Alaska as part of a project for
Sealaska Corporation to demonstrate small scale power generation. Owner Wes
Tyler and Thomas Deerfield chipped the fuel while I did the arm waving and
entertained visiting locals. We ran the 20 kWe unit on wet (35% MC) spruce
chips. It ran very well. We did collect a lot of condensate in the final trap
before the engine but there was no sign of tars or sticky char in the filters.
See the Coast Alaska news story at
http://www.krbd.org/2012/10/19/can-small-wood-gas-systems-lower-rural-energy-costs/
Mill personnel will run the gasifiers this winter. If all goes well we may
install one of the gasifier at the Icy Point resort where cruise ships visit an
old cannery. The resort is owned by the Hoonah tribal corporation. Businesses
in Hoonah pay up to $0.67/kWe without subsidy so fuel/power is a substantial
cost. Locals are looking for opportunities to generate power and heat
greenhouses to grow fresh vegetables.
Andy Soria, Professor of Wood Chemistry and Applied Environmental Science and
Technology at University of Alaska has had GEKS’s for a couple of years and
Bernie Karl in Fairbanks has run a small GEK with an engine but these are the
first gasifier-gensets to be installed in an Alaskan village since the Alaska
Village Electric Coop project by Marenco (Joe Marks) in the early 1980s.
Tom Miles
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