Renewable energy
Renewable energy:
- Biofuels,
- Biomass,
- Geothermal,
- Hydro power,
- Solar power,
- Tidal power,
- Wave power,
- Wind power,
"Renewable energy is energy generated from natural resources¡ªsuch as sunlight, wind, rain, tides and geothermal heat¡ªwhich are renewable (naturally replenished). Renewable energy technologies range from solar power, wind power, hydroelectricity/micro hydro, biomass and biofuels for transportation." -- Wikipdia
"Renewable energy offers our planet a chance to reduce carbon emissions, clean the air, and put our civilization on a more sustainable footing."--REN21, 2008, Renewables 2007 Global Status Report
The worldwide average continuous power consumption today is 2 kW/person. In the USA the power consumption is on average 10 kW/person and in Europe about 5 kW/person and two billion people on earth do not consume any fossil fuels at all. -- Sen, 2008, Solar Energy Fundamentals and Modeling Techniques - Atmosphere, Environment, Climate Change and Renewable Energy
"90% of the organic substances derive, through chemical transformations/reactions, from seven oil derivates: ethylene, propylene, butenes, benzene, toluene, xylene, and methane. Approximately 16% of oil is transformed into chemicals."-- Graziani and Fornasiero, 2007, Renewable Resources and Renewable Energy: A Global Challenge
"Notably, the extraction of oil is also becoming increasingly expensive. In 1920, the energy of a single barrel of oil was sufficient for the extraction and refinement of 50 barrels of oil. Today, with the same energy input, it is possible to get only 5 barrels. "-- Graziani and Fornasiero, 2007, Renewable Resources and Renewable Energy
"The renewable energies satisfy the following prerequisites:
1. They are environmentally clean, friendly, and do not produce greenhouse gases.
2. They should have sufficient resources for larger scale utilization. For instance, the solar energy resources are almost evenly distributed all over the world with maximum possible generatable amounts increasing toward the equator.
3. The intermittent nature of solar and wind energy should be alleviated by improving the storage possibilities.
4. The cost effectiveness of the renewable sources is one of the most important issues that must be tackled in a reduction direction. However, new renewable energies are now, by and large, becoming cost competitive with conventional forms of energy." ( Sen, 2008 ))
Why sustainable energy matters
| Web Links (1): | Notes |
- WEC - World Energy Council
- "the foremost global multi-energy organisation in the world today, Member Committees in over 90 countries, .. 80-year-old organisation covers all types of energy, including coal, oil, natural gas, nuclear, hydro, and renewables,¡"
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- A review of technology diffusion models with special reference to renewable energy technologies, by Rao, K. U. and Kishore, V. V. N., 2010
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- Current utilization and future prospects of emerging renewable energy applications in Canada, by Islam, M., Fartaj, A. and Ting, D. S., 2004
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- Environmental effects of building materials; wood the renewable resource, by CWC, 1995
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- Renewables 2007 Global Status Report, by REN21, 2008
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- Simulation Tools For The Exploitation Of Renewable Energy In The Built Environment: The Entrack-Gis System, by Clarke, J. A., Evans, M. S., Grant, A. D. and Kelly., N., 1997
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- Solar energy fundamentals and modeling techniques - atmosphere, environment, climate change and renewable energy, by Sen, Z., 2008