[Stoves] [Gasification] Gasification Operational Principles

[jim mason]

here's a link to some initial pictures of the "gasifier experimenter's
kit" (aka: The GEK Gasifier) i mentioned in the post below.
http://theshipyard.org/gek/index.html

later will come run pictures, as well as a more detailed description
of the architectural types and specific parameters that can be varied.
 i have yet to write up the details other than the quick summary in
the old note below.

as you will see in the pictures, the fabrication has been reduced to
tubes, plates and standard plumbing parts.  the tubes all correspond
to common north american tank types (of 14" 12" and10").  the plates
are circular cut with a plasma cutter by hand with a protractor.  the
plumbing is npt black pipe and cast iron sewer connectors for the
reduction zone bells.  the insulation is ash in a "tube in tube" in
fill arrangement.  the dimensional range is derived from a full review
the historic imbert and sweedish literature, as well as relevant
contemporary downdraft literature.  combustion and reduction
architectures cover historic designs currently, but most contemporary
variants can be easily fabricated and "inserted" at different bolt
points in the unit.  the unit in the picture shows a basic MEN type
air preheating arrangement.   Bungs, TC inserts and other access is
provided for measurement of temp and vacuum at all relevant points
across the system.

the goal with this unit is a fully flexible and architecturally
diverse gasifier that can be built from easy commodity parts, but with
a full and motivated range of configuration and data measurement
potentials.  diy folks can build on their own from local obtainium, or
"full parts assemble yourself" kits are easily manufacturable from
rolled tubes and cnc plasma cut plates.  we will soon be offering kits
and complete units for sale, largely aimed at educators, researchers,
and diy enthusiasts.

more next week when i get the drawings and writing together.

j


>
>  to help with this problem, one of the things we've been working on of
>  late is an "experimenters gasifier kit" that allows for the easy and
>  modular change out between these different modes in the same unit, so
>  that direct comparison and rich learning is possible.  the goal has
>  been to make a full gasifier lego system- a unit where all the major
>  and many of the minor downdraft architectural types are available in a
>  single unit, and easily changed between for good comparison and formal
>  research.
>
>  we now have a unit that can easily rebolt the main insert so as to
>  move between core and imbert types.  different open core tube sizes
>  are installable via a simple bolt down bottom ring.  in the imbert
>  type, restriction sizes and different varieties of reduction cone
>  designs similarly bolt in.  related air delivery points are movable up
>  and down, as well as in and out.  nozzles sizes in cast iron or
>  stainless change out as desired.
>
>  hybrids are also possible between the two main types, with air
>  dedicated air delivery to pyrolysis and combustion zone, but still
>  with open top, (a la mukunda, et al).    similarly, the top hopper can
>  change out from "none" for small batch lab work, to traditional
>  insulated bin, and non-insulated monorator design.
>
>  i will post some pictures and more detailed explanations of the "lego
>  gasifier" soon.  today i am shipping it off to the canadian professor
>  who ordered it for a biomass energy program.
>
>  i will be open sourcing this design with full doc soon, in the hopes
>  that it will prove useful for others.  hopefully others will develop
>  new "bolt in" components that expand the available library of
>  comparative options for the unit.
>
>
>  jim
>



-- 
--------------------------------------------------------------------------------
jim mason
website: www.whatiamupto.com
current project: mechabolic (http://www.mechabolic.org)
announce list: http://lists.spaceship.com/listinfo.cgi/icp-spaceship.com