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< prev - next > Energy Biogas KnO 100619_Biogas Digest vol 1 (Printable PDF)
Biogas Appliances
Biogas is a lean gas that can, in principle, be used like other fuel gas for household and
industrial purposes, especially for:
Gas cookers/stoves
Biogas lamps
Radiant heaters
Gas cookers/stoves
Biogas cookers and stoves must meet various
basic requirements:
simple and easy operation
versatility, e.g. for pots of various size, for
cooking and broiling
easy to clean
acceptable cost and easy repair
good burning properties, i.e. stable flame,
high efficiency
attractive appearance
Two-flame burners
A cooker is more than just a burner. It must satisfy
certain aesthetic and utility requirements, which can
vary widely from region to region. Thus, there is no
such thing as an all-round biogas burner. Most
households prefer two-flame burners. The burners
should be set initially and then fixed. Efficiency will
then remain at a high practical level. Single-flame
burners and lightweight cook-stoves tend to be
regarded as stop-gap solutions until more suitable
alternatives can be afforded.
Figure 7: Institutional burner
in a community kitchen
Photo: Krämer (TBW)
Figure 8: Lightweight and stable 2-flame biogas burners
Biogas cookers require purposeful installation with adequate protection from the wind. Before
any cooker is used, the burner must be carefully adjusted, i.e.:
for a compact, bluish flame
the pot should be cupped by the outer cone of the flame without being touched by the
inner cone