Dear TOM
The report clearly shows how GTZ, having vast world word over
network is producing an technical report , which , in the name of
environmental quality , make an biomass decentralised one as unreliable ,
as if unconfiavel , as if not flexible. As tom correctly pointed out can be
true five year before , when the small gas engine price was too high,
sevral harware cyclone filters are not readily avilable .
The report is incomplete , partial , not gone deep into viability
analysis, economic apportunity forot taking into developments, n
account other coproduct from the projects
After carfuly reading the report , I was disapointed about the quality
of the report at the end as you have remarked at the final , with facts
and conclusions that appropriate solution do exists readily .If GTZ
need to have good energiy experts, but seem to have only environmental
impact especialist who do not know clean technolgy developments
The water is not an onus , but can be bonus as an insecticide , as
fertlizers, the and bio oil has it value , gas cleaning technology
relay can work too .we who are involved
in small scale gasification for more years have lived through the
litany of tears reported in the study , showing practical way and praction
action can be possible
The biochar is another product instead of ash alone can make this
technology more viable ,but this report , an outdated one , made by an
responsable GTZ , realy erode all pwhat we have rivate , publich and
unversity fundings, making the the place under darkness remain more time in
dark.Thus for us who seen so many stone with tears , this report results
bring nothing new , as old as 10 year , which are all well debated ,
discussed , useful innovative alternates proposed.Even after very big well
runinng small biomass eneumented is being documiented in bioenegy list ,
provineral low investment option such as GEK , an open source hard ware
compnents made avilable , the report include only comercial system and hen
On Mon, Aug 30, 2010 at 2:48 PM, Tom Miles <[email protected]> wrote:
>
> > Paper series: Small-scale Electricity Generation from Biomass GTZ-HERA
> has
> looked more closely into the small-scale use of biomass for rural off-grid
> electrification. Results are disillusioning.
>
> Christa, Michael, Elmar,
>
> Thank you for pointing us to these reports. There is some interesting
> information in the gasification report but frankly the study is not much
> use
> to either policy makers or engineers. I say this not because of its
> conclusions but because if its content. Those of us who have been involved
> in small scale gasification for more than 35 years have lived through the
> litany of tears reported in the study. We will look with interest at the
> documents and literature that are cited but I suspect that we could make
> better use of these studies and come to more useful conclusions.
>
> As an overview report it identifies a number of problems (toxic gases,
> tars,
> pollutants) without clearly understanding or describing how these are
> solved. It would be far more useful if it were written from an engineering
> perspective that highlighted lessons learned, paths forward and
> circumstances where gasification can work rather than concluding,
> essentially, that small scale gasification has failed because it does not
> meet the criteria of the European automobile industry. Even highly
> productive systems were discounted because they didn't meet European
> environmental health and safety standards. Reading the report one would not
> know that there are affordable small scale systems that you can very safely
> run in your backyard in Germany.
>
> The report ignores developments in the last five years that are yielding
> systems that solve many of the problems that are highlighted. It has
> ignored
> some very important sources. It quotes unidentified sources ("independent
> experts") and old data (Stassen's World Bank study). Literature is cited
> but
> it does not look like very many of us who are involved in gasifier
> development were contacted for this study. It assumes that students who
> write theses correctly interpret what they observe. It incorrectly applies
> problems associated with some gasifier designs to all gasifiers.
>
> To be of any use to industry or policy makers this introductory, or
> overview
> level, study should be followed up with a deeper study of how gasification
> can be used successfully. (A follow up could be done in collaboration with
> the IEA Task 33 on biomass gasification.) At best it will stimulate
> interest in making better gasification systems. At worst it will erode
> confidence (i.e. funding) at the policy level in the potential of small
> scale gasification.
>
> Kind regards,
>
> Tom Miles
> www.gasifiers.bioenergylists.org
>
> Ref.
> Small-scale Electricity Generation from Biomass
>
> Part 1 - Biomass Gasification
>
> http://www.gtz.de/de/dokumente/gtz2010-en-small-scale-electricity-generation
> -from-biomass-part-I.pdf<http://www.gtz.de/de/dokumente/gtz2010-en-small-scale-electricity-generation-from-biomass-part-I.pdf>
>
> Part 2 - Biogas
>
> http://www.gtz.de/de/dokumente/gtz2010-en-small-scale-electricity-generation
> -from-biomass-part-2.pdf<http://www.gtz.de/de/dokumente/gtz2010-en-small-scale-electricity-generation-from-biomass-part-2.pdf>
>
> Part 3 of the paper series which will cover plant oil for power generation
> will be available by the end of this year.
>
>
>
>
>
>
>
>
>
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>
--
************************************************
P.V.PANNIRSELVAM
ASSOCIATE . PROF.
Research Group ,GPEC, Coordinator
Computer aided Cost engineering
DEQ – Departamento de Engenharia Química
CT – Centro de Tecnologia / UFRN, Lagoa Nova – Natal/RN
Campus Universitário. CEP: 59.072-970
North East,Brazil
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