As was mentioned earlier the main applications of biomass gasifier are:
) Direct heat applications
e a number of manufacturers catering to the onrm machinery gasification systems . Small scale electricity generation systems also
ries . There is no reason why
ch systems cannot become popular in developed countries especially when there have been
ation is running of Stirling engines . These engines have
ery high efficiencies and may prove to be a better alternative than internal combustion
tion. Another interesting
pplication may be use of producer gas to run a fuel cell plant. The energy density of such a
arm applications biomass residues are attractive proposition. However, before
ny large scale application of gasification is undertaken the fuel availability is to be critically
0 days/year will
quire about 213 acres of cotton plantation to produce the required cotton stalks. Against
availability is not adequate then the decision has to be made about
nning it on wood. However such decisions can only be made at specific sites and for
For example, grain drying can have biomass gasifier/solar coupling.
a) Shaft power systems
c) Chemical production
In the shaft power systems the main agriculture applications are driving of farm machinery
like tractors, harvesters etc. There are quit
provide an attractive alternative to utilities.
Another useful application of producer gas units is in irrigation systems. This seems to be the
most to be the most important application in developing count
quite a number of solar powered irrigation systems installed
Direct heat systems, because of their simplicity, may prove to have biggest applications in
agriculture. Among them are grain drying, green house heating and running of absorption
refrigeration and cooling systems. Again these systems can be coupled to other renewable
energy systems like solar for thermal applications. Another interesting application for direct
heat (external combustion) applic
engine running on producer gas.
Production of chemicals like Methanol and Formic acid from producer gas is a recent
However with fossil fuels getting scarcer, production of these chemicals by .
producer gas may prove to be an economically feasible proposi
plant would be highly favorable as compared to IC engine systems.
However for all these applications the most important ingredient is the availability of biomass
fuel. For on f
As an example it is instructive to look at the land area required, for a gasifier to run on cotton
stalks (biomass residue) as fuel. On an average, quantity of stalks harvested is 1.5
Thus a 100 kW gasifier running at 8 hours per day for 30 .
such background all the future applications of gasifiers should be evaluated.
If the biomass residue
Just like in any other alternative energy source it is advisable to use hybrid systems, similarly
in biomass gasifications systems also it will be worthwhile to use them in conjunction with
other energy systems.17
Only in specific cases of methanol or chemical production, should the gasification system be
used as separate one.