Depends on composition calorific value can vary between 25-49 KJ/Kg. Raw biogas has got comparatively less calorific value and might not seems to be a good option in automobile IC engines, though it can be used for stationary application IC engines installed near the Biogas production plant. It is the large percentage of CO2 in the raw or unpurified biogas that reduces the heating value of the gas, increases the compression and transportation costs. And as the compression and transportation are not economical, hence it can be used at the point of production itself. Purification of biogas make the heating value good enough to be used in automobile also. To use as a fuel in IC engines, biogas can be processed to remove H2S and CO2, as H2S can corrodes the vital metal components and increases that maintenance cost.
Table 5: Optimum Conditions for Biogas Production, (Kathir & Solomon, 2013)
Calorific value majorly depend on the feedstock, slurry preparation and processing conditions. Table 5 shows optimum condition for biogas production by anaerobic fermentation process.
Biogas in IC engine:
Methane in biogas is the combustible component that can be burned down to get energy, and hence more the percentage of methane in gas better will be the energy density, and higher the energy density of gas higher will be the power output of IC engine. …show more content…
The viscosity is a lot heavier than the diesel fuel. The viscosity of the bio oil depends on the type of feedstock being used in the production of the bio oil. The water content present is significantly larger than the other fuels which is a main drawback of the fuel. The properties such as the energy density, low flame temperature and other factors are highly effected in the bio oil. The bio oil is highly polar and can absorb lot of water in it and consequently the high heating value is also
Table 5: Optimum Conditions for Biogas Production, (Kathir & Solomon, 2013)
Calorific value majorly depend on the feedstock, slurry preparation and processing conditions. Table 5 shows optimum condition for biogas production by anaerobic fermentation process.
Biogas in IC engine:
Methane in biogas is the combustible component that can be burned down to get energy, and hence more the percentage of methane in gas better will be the energy density, and higher the energy density of gas higher will be the power output of IC engine. …show more content…
The viscosity is a lot heavier than the diesel fuel. The viscosity of the bio oil depends on the type of feedstock being used in the production of the bio oil. The water content present is significantly larger than the other fuels which is a main drawback of the fuel. The properties such as the energy density, low flame temperature and other factors are highly effected in the bio oil. The bio oil is highly polar and can absorb lot of water in it and consequently the high heating value is also