42
Inventory of Innovative Indoor Smoke
Alleviating Technologies in Nepal
4.3 Briquette from HH and agricultural waste
Year of dissemination
Cost
Quantity produced
Manufacturing process and technical
description
Suitable regions
Advantages
Disadvantages
Major organisations involved in
promotion/dissemination
2002
NA
NA
Briquette can be made from HH waste, such as, paper, grass,
leaves, saw dust, slurry and dung. The briquette made of paper
is easy to ignite and less smoky and the paper also works as a
binding material.
A cylindrical mould of about 90 mm diameter and 300 mm height
is used to produce briquettes. There is also a metal rod of about
12 to 16 mm at the middle of the cylinder to make a hole in the
briquette for better combustion. The waste is grinded in some
cases where water is added to make a paste. The paste is put in
a mould and compacted up to certain extent that it cannot be
pressed by bare hands. FoST has developed two types of heavy
duty pressing machines. First type is a lever press machine which
requires two persons to operate, one operating the pressing
device and another to prepare the mould. The second type is
simple one that can be operated by a single person. The
briquettes produced from manual press machine have
comparatively low density.
Normally, this type of briquette is more porous than firewood
and produces less smoke. The manual compaction device is
more suitable for HH level uses. Highly compacted briquettes
are less porous which can emit dense smoke in ordinary cooking
stove but the compaction has no effect in bayupankhi stoves
due to proper air fuel mixture. Designed pressing machine could
produce a rectangular shaped briquette cake of approximately
18 x 2 x 2 inch size.
Suitable in all areas.
Eco friendly, which reduces deforestation and save environment.
These briquettes can reduce smoke significantly, and save fuel
expenditure up to 40 per cent compared with traditional fuel
wood stoves.
NA
FoST.