200
X. Agnello J. Naveen et al.
9 Explanation of Cost Analysis Using ROI and CBR
for Co-generation
Regarding Co-generation, from 1986 to 1990 industry used direct electricity from
non-renewable energy source this is the conventional technology (−94.99%) and
from 1990 “Igni fluid” boiler form bagasse (Co-generation) was installed as cleaner
technology (-73.82%) for Rs. 1 investment. Comparing the two technologies cleaner
technology (Co-generation) shows a higher ROI, but there is loss. In terms of costbenefit ratio, conventional technology (0.0671) and cleaner technology (0.2719),
(shown in Table 2) cleaner technology shows a higher benefit.
9.1 Advantage of Co-generation
1. It is as follows: power export to grid during season, Sugar plant and aux consumption: 4.5–5 MW, Power export to TNEB Grid 8–10 MW 77.28 GWh; emission
reduction, 62950.75 tonnes per year; and annual revenue at Rs. 270/tonne of CO 2
reduction, Rs. 1.7 crores.
2. About 15% of coal is used for initial ignition of the raw material, 85% biomass,
has raw materials with a ratio by calculating the specific calorific value (CV) with
quantity approximate usage determine per annum. For steam production-825,
Enthalpy, 2081 Cv.
3. Running Period, 180–250 days; power export to grid, 10–14 MW; power cost
given by Tamil Nadu electricity board (TNEB) using bagasse as a fuel, Rs.
4.52/unit; power cost given by TNEB using bagasse and coal as a fuel, Rs.
4.50–4.90/unit; total sales during off season, Benefits in Rs. 16,245,000 per year.
4. 85 percent biomass has raw materials, only 15 percent of coal is used as per
government norms.
5. Power savings is 3,420,000 kWh per year.
6. Air pollution is very low as compared to other technology like nuclear power and
atomic power as the dispersion of the air is too low in the stack. Double stage
Electrostatic precipitator (ESP) is used to control the air pollution.
7. The farmer gets Economic benefit due to selling their raw material (biomass) for
co-gen like Coconut shell, Julie flora, Pith, Chipper dust, Groundnut shell to the
industry.
8. Solid waste generated by Boiler Ash-Bagasse 21.67(T/D), Boiler Ash coal 30
(T/D) Bagasse ash will used as manure and coal ash will be sold out to brick
manufactures.
Advantage: Automated flow meter for energy calculation. No human error
accurate in readings, Energy saving technology, Automated sensor are attached.
X. Agnello J. Naveen et al.
9 Explanation of Cost Analysis Using ROI and CBR
for Co-generation
Regarding Co-generation, from 1986 to 1990 industry used direct electricity from
non-renewable energy source this is the conventional technology (−94.99%) and
from 1990 “Igni fluid” boiler form bagasse (Co-generation) was installed as cleaner
technology (-73.82%) for Rs. 1 investment. Comparing the two technologies cleaner
technology (Co-generation) shows a higher ROI, but there is loss. In terms of costbenefit ratio, conventional technology (0.0671) and cleaner technology (0.2719),
(shown in Table 2) cleaner technology shows a higher benefit.
9.1 Advantage of Co-generation
1. It is as follows: power export to grid during season, Sugar plant and aux consumption: 4.5–5 MW, Power export to TNEB Grid 8–10 MW 77.28 GWh; emission
reduction, 62950.75 tonnes per year; and annual revenue at Rs. 270/tonne of CO 2
reduction, Rs. 1.7 crores.
2. About 15% of coal is used for initial ignition of the raw material, 85% biomass,
has raw materials with a ratio by calculating the specific calorific value (CV) with
quantity approximate usage determine per annum. For steam production-825,
Enthalpy, 2081 Cv.
3. Running Period, 180–250 days; power export to grid, 10–14 MW; power cost
given by Tamil Nadu electricity board (TNEB) using bagasse as a fuel, Rs.
4.52/unit; power cost given by TNEB using bagasse and coal as a fuel, Rs.
4.50–4.90/unit; total sales during off season, Benefits in Rs. 16,245,000 per year.
4. 85 percent biomass has raw materials, only 15 percent of coal is used as per
government norms.
5. Power savings is 3,420,000 kWh per year.
6. Air pollution is very low as compared to other technology like nuclear power and
atomic power as the dispersion of the air is too low in the stack. Double stage
Electrostatic precipitator (ESP) is used to control the air pollution.
7. The farmer gets Economic benefit due to selling their raw material (biomass) for
co-gen like Coconut shell, Julie flora, Pith, Chipper dust, Groundnut shell to the
industry.
8. Solid waste generated by Boiler Ash-Bagasse 21.67(T/D), Boiler Ash coal 30
(T/D) Bagasse ash will used as manure and coal ash will be sold out to brick
manufactures.
Advantage: Automated flow meter for energy calculation. No human error
accurate in readings, Energy saving technology, Automated sensor are attached.