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.
Satamax Antone wrote:
What i'm trying to explain, is that there is, out there double layer water heaters, which can be cut at the bottom to form a barrel with a water jacket. Last one i have cut had a 1 1/2 inch gap between the two barrels. You would just have to weld the bottom of the water jacket, and be done with a nice barrel with water cooling