[Stoves] [Gasification] Gasification Operational Principles

[Nikolaus Foidl]

Dear Jim!

What would a unit with a 600.000 kcal/h output cost( woodchips)?
Best regards Nikolaus


On 2/29/08 6:38 PM, "jim mason" <jimmason at whatiamupto.com> wrote:

> 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
>> 
> 
>