there is a book with 175 pages free to download:
An introduction to concepts and applications of wood-gas burning technologies for cooking.
2nd revised edition
This manual was initiated and supported by Dr Marlis Kees, manager of the sector
programme Poverty-oriented Basic Energy Services (HERA) at the Deutsche Gesellschaft
für Internationale Zusammenarbeit (GIZ) GmbH. Without her support and that of the
entire HERA-team, the world’s first resource for micro-gasifiers (1st edition) and its
update (2nd edition) would not have been created.
Unless otherwise indicated, all the contents of this manual were written by Christa Roth.
Dr Paul Anderson and Dr Hugh McLaughlin (Professional Engineer, PhD) are the
co-authors of Chapter 2, having also provided substantial contributions as well as
technical review for the other chapters. Kelpie Wilson (Wilson Biochar Associates)
and Thayer Thomlinson (Communications Director at the International Biochar
Initiative) contributed to Chapter 5.
This manual was made possible by the tax-payers of the Federal Republic of Germany,
administered by the Gesellschaft für Internationale Zusammenarbeit GmbH (GIZ).
As such, this information is not copy-righted and resides in the public domain. Text
passages may be quoted from this manual provided that credit is given to the source.
I live in Germany and pay tax on anything I buy...
I realy do not like to pay tax on watching money be used for so much senseless things
...but for this book it was well done.
So please enjoy what I had helped to get financed.