• Nuclear fusion is the process by which multiple likecharged atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.
• Nuclear fusion occurs naturally in stars. Artificial fusion in human enterprises has also been achieved, although not yet completely controlled.
• Fusion, the reaction that...
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Wednesday, October 18, 2017
Tuesday, October 17, 2017
Hydroelectric Energy
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Climate Change
• Hydroelectricity is electricity generated by hydropower, the production of power through use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy
• Once a hydroelectric complex is constructed, the project produces no direct waste, and has a considerably different output level of the greenhouse...
Monday, October 16, 2017
Wind Energy
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Climate Change
• Wind power is the conversion of wind energy into electricity, using wind turbines
• At the end of 2007, the worldwide capacity of wind-powered generators was 94.1 gigawatts. Although wind produces only about 1% of world-wide electricity use, it is growing rapidly, increasing more than fivefold globally between 2000 and 2007
• Large scale wind farms...
Sunday, October 15, 2017
Solar Energy : Thermal
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Climate Change
Solar thermal energy (STE) is a technology for harnessing solar energy for thermal energy (heat).
• Low temperature collectors are flat plates generally used to heat swimming pools.
• Medium-temperature collectors are also usually flat plates but are used for heating water for residential and commercial use.
• High temperature collectors concentrate...
Saturday, October 14, 2017
Solar Energy: Photovoltaic
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Climate Change
• Currently average Sunpower's cells have a conversion ratio of 23.4 %. However, advances past this efficiency mark are being innovated and efficiencies of 42% have been achieved
• New technologies of photovoltaic cells are expected to hit the market soon: Fine layer cells and dye cells which will make solar cells much easier to integrate into buildings
•...
Friday, October 13, 2017
Geothermal Energy
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Climate Change
• Geothermal energy is the process of using the heat from the Earth to produce steam and generate electricity in the process
• Geothermal resources range from shallow ground to hot water and rock several miles below the Earth's surface, and even further down to the extremely hot molten rock called magma. Wells over a mile deep can be drilled into...
Thursday, October 12, 2017
International Agreements: The Kyoto Protocol
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Climate Change
• The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on Climate Change. A key feature of the Kyoto Protocol is that it sets binding targets for 37 industrialized countries and the European community forreducing Greenhouse Gas (GHG) emissions
• These amount to an average of 5 %t against 1990 levels over...
Wednesday, October 11, 2017
Global Dimming
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Climate Change
• Since the Industrial Revolution, humans are adding tremendous amounts of particles into the atmosphere (e.g. traces left from jet planes, industrial dust, aerosols).
• These particles, which are not necessarily GHG in nature have a cooling effect by blanketing the lower atmosphere.
• The temperature that we are actually experiencing may therefore...
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