[Gasification] Doug Williams

Fri Jul 13 17:35:00 CDT 2012

Kev-You have no idea what you are talking about. Doug Williams has freely
shared information and ideas for decades and keeps all of our feet soundly
grounded in reality. 

What have you done for me lately? 

John Miedema
Director of Biomass Energy
Thompson Timber Company
Wk cell 541-740-3652
  <mailto:jmiedema at peak.org> jmiedema at peak.org

  _____  

From: gasification-bounces at lists.bioenergylists.org
[mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of K Z
Sent: Friday, July 13, 2012 11:50 AM
To: gasification at lists.bioenergylists.org
Subject: Re: [Gasification] Doug Williams

For those who are new, Tom Reed is actually the living gasification legend
as I and many other researchers and developers benefited very much from his
books and publications.  
What scientific publication Doug Williams has a part from his web site to
sell world war-II downdraft gasifiers ? I do not think worldwide
Gasification community can benefit so much from commercially sensitive
people like Doug Williams. Tom Reed was the most reliable resource that the
Gasification community relied so far because he shared everything that he
discovered.

Kev Makeza 
  _____  

From: thomas at dalsonenergy.com
Date: Thu, 5 Jul 2012 11:17:44 -0800
To: gasification at lists.bioenergylists.org
Subject: Re: [Gasification] Doug Williams

Well put, as usual, Doug.
For those who are new, Doug is one of the longest-standing and most reliable
resources that the worldwide Gasification community has to rely on for
reality-based perspectives.

Thomas Deerfield, President
Dalson Energy, Inc.
Anchorage, Alaska
(907) 277-7900

Renewable Energy Solutions
Energy Efficiency & Conservation
Biomass Specialists
Consulting & Project Coordination

Dalson Energy, where evolution is valued over predictability.

On Jul 5, 2012, at 11:00 AM, gasification-request at lists.bioenergylists.org
wrote:

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Today's Topics:

  1. Re: Identifying and fixing technical and commercial
     roadblocks to commercial small-scale CHP gasifiers (doug.williams)

----------------------------------------------------------------------

Message: 1
Date: Thu, 5 Jul 2012 18:19:15 +1200
From: "doug.williams" <Doug.Williams at orcon.net.nz>
To: "Discussion of biomass pyrolysis and gasification"
            <gasification at lists.bioenergylists.org>
Subject: Re: [Gasification] Identifying and fixing technical and
            commercial        roadblocks to commercial small-scale CHP
gasifiers
Mess age-ID: <7C98EDEDCDDD4AF79AD7548BA30C4CDA at dougspc>
Content-Type: text/plain; charset="iso-8859-1"

Hi Gasification Colleagues,

I must say I have enjoyed the recent discussions initiated by Tom Miles,
that has bought to the surface, some of the experiences which as
manufacturers of gasifiers, we face in the market place. Other than those
who are only just discovering gasification, enthusiasm to use the technology
in a market dominated by fossil fuels, is less than encouraging, but as
addicts of gasification, I guess that we believe in what we do, at least,
most of the time (:-) 

To dwell on the negatives however, doesn't help us to answer those asking
questions to arrive at the right or appropriate answers.  While we can point
to certain successes, or technical achievements at all levels of gasified
applications, the development work to interface gasifiers in commercially
visible installations, still needs vigorous unbiased scrutiny. Not ever y
thing that whistles and shines, no matter who makes it, can be proof that it
works as it should.

I'm intrigued by Colin's question of how long should a gasifier be tested
before declaring it commercial, because the reply depends on who's asking
the question, consultant or manufacturer.  Each have their own set of
responsibilities. Insurances on which your guarantees may rely, especially
Public Liability, may place limitations on conditions of supply, so the
market you need, may have no protection if outside of the country of
manufacture. As you add the liabilities that may accumulate as a condition
of supply, the "testing period" needs to cover all those things that could
invoke any financial penalty clauses.

For what it is worth, drawing from our own commercializing programme begun
in 1984, we sent the same design of gasifier to Fiji, Malaysia, South
Africa, and Maine USA. In the differing environments of temperatures and
high altitudes, we had to test for a base line for performance that was
consistent across all conditions, more a test of our finances than that of
the gasifier. That took two years alone, but worth the effort not to have
any nasty surprises in the remote  Highlands of Central PNG. 

If you add to this a two thousand hour engine test conducted by Listers NZ,
before arriving at the testing of the final design, you may get some idea of
just how much time based experience is needed. Short cuts cost money,
usually somebody else's! Shiny nuts and bolts cannot fix a flawed philosophy
of gas making, but many with questions, have little appreciation of how
environmental factors can affect gasification behavior. It's not only about
how many have been supplied,  but tested performance across the conditions
that limit their reliability. You just cannot do all this in the cloistered
protection of a home base.

Hope this may be of some help Colin.

Doug Williams,
Fluidyne Gasification.
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