Energy
Comparison of Renewable energy resources
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Lecture Slides will be posted to the gmail site: sp3407re@gmail.com Password: SP123456
Created by Diane Chan (former UBD student)
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Leading renewable energy resources 1 Wind Energy
2 Biomass Energy
3 Geothermal Energy
4 Hydro Energy
5 Solar Energy
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Main Characteristics of Different Technologies[1]
Category
Biomass
Conversion System
Scale Range, MWe
Efficiency, %
Combustion/stand alone
20.0 – 100.0
20–40 (elect.)
Combustion/CHP
0.1 – 10.0
60–100 (H+P)
Co-Combustion
5.0 – 20.0
30–40 (elect.)
Gasification/Diesel Turbine
0.1 – 1.0
15–25 (elect.)
Gasification/Gas Turbine
1.0 – 10.0
25–30 (elect.)
Gasification/BIG/CC
30.0 – 100.0
40–55 (elect.)
Digestion/Wet Biomass
Up to several
10–15 (elect.)
Modern wind turbines
~ 5.0
Dry Steam Plants
35.00 – 120.0
Flashed Steam Plants
10.00 –- 55.0
Binary Cycle Plants
0.25 – 130.0
Combined Cycle Plants
10.00 – 130.0
Run-of-River
0.1 - 14,000.0
Reservoir storage
1.0 - 18,000.0
Photovoltaic (PV)
0.05 – 1.00 kWp
Availability
climate dependent
10–25 (elect.)
0.50 – 5.00 kWp
10 kWp–several MWp
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Policies, Economics, social considerations and Environment
Technology Specific Barriers and Success Factors[2]
WIND
Barriers
Success Factors
Lack of good wind conditions
-Sites with sufficient wind-potential
-Political will to introduce subsidies
Developed Countries
Developing Countries
- Limited sites onshore
Lack of financial resources to subsidise wind turbine Developed Countries
Heavy dependence on imported energy resources
Available offshore sites
Developing Countries
Hybrid solutions suitable for rural electrification
SOLAR
Barriers
Success Factors
-Low energy density
-Costs of solar PV electricity considerably higher than other renewable sources, high capital costs, long payback periods for Solar Heating
-Clean, distributed power solutions
-Thermal electric technologies success for larger solar
stations
References: Energy Technology Indicators, 2002 13