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2009-10-14
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............................................................................... 55 15.5 Coal and the environment.........................................................................................55 NATURAL GAS.................................................................................................................55 ..............................................................................................................................................56 16.1 How Do We Get Natural Gas?................................................................................. 56 16.2 How Is Natural Gas Stored and Delivered?..............................................................57 16.3 How is Natural Gas Measured?................................................................................57 16.4 How Is Natural Gas Used?....................................................................................... 57 ........................................................
.......................................................14 2.5. Biomass Energy....................................................................................................16 3. Conclusion............................................................................................................ ....18 4. Sources............................................................................................................... .......19 Renewable energy Renewable energy is energy generated from natural resources--such as , wind, rain, tides and geothermal heat--which are renewable (naturally replenished). In 2006, about 18% of global final energy consumption came from renewables, with 13% coming from traditional biomass, such as wood-burning. Hydroelectricity was the next largest renewable source, providing 3% (15% of global electricity generation),followed by solar hot water/heating, which contributed 1.3%. Modern
where the electricity is produced; a dam that can be opened or closed to control water flow; and a reservoir where water can be stored. Hydroelectric power provides almost onefifth of the world's electricity. China, Canada, Brazil, the United States, and Russia were the five largest producers of hydropower in 2004. The first hydroelectric power plant was built at Niagara Falls in 1879. Negative aspects of hydropower Damming rivers may destroy or disrupt wildlife and other natural resources. Hydropower plants can cause low dissolved oxygen levels in the water, which is harmful to river habitats. Hydroelectric power plants don't work for a very long time. Silt, or dirt from a riverbed, builds up behind the dam and slows the flow of water. Geothermal energy Geothermal energy is the heat from the Earth. It's clean and sustainable. It can be extracted without burning a fossil fuel such as coal, gas, or oil.
it. · Subsidies (government · Forbes said "no" money) to the wind sector is more than 200 times as great as those given to oil and gas sector. Oh and the wind has to blow. Hydropower Power to the Water · By using earth's · 90% energy water cycles and efficient compared running water used to natural gas threw mostly dams being 50% to provide energy. efficient. · Hydropower is · The only problem about 1/3 the cost is, you need water. of using fossil fuels and about 1/6 the cost of natural gas. Biofuels · Using natural I Love you Plants materials to turn into fuel or forms of combustible energy. · Which is mostly plants and plant products Cost Efficient?
Name at least 3 renewable energy sources. What consequence might there be if we use non-renewable energy too much? Which energy technology is the world's fastest growing? With what name is renewable energy also known as? Light Heat Electricity Generated from natural resources. Doesn't harm the environment. Can't be replenished Most of our energy. May cause global warming. Wind energy is the fastest growing. Most renewable energy comes from the sun. Hydroelectric energy is the oldest and largest source. Renewable energy a.k.a "green" energy. Thank you for listening! We use energy every day. It surrounds us in different forms, such as light, heat, and electricity. Our bodies
When this gas is trapped, however, it can be made useful, instead of just being a nuisance. Trapped biogas can be used to power stoves for cooking and heating, in addition to other applications. By trapping the gases, people can prevent methane from reaching the atmosphere, thereby reducing degradation caused by methane gas. The ability to turn waste products into something which can be utilized is also rather convenient, especially in developing countries, where available resources may be limited. Furthermore, by turning biomass into biogas, people can address issues like sewage treatment, ensuring that raw sewage is not released into the natural environment. Producing process Biogas is normally produced by using the excreta of animals as the source material. In most of the countries where biogas is produced, the excreta of the cattle and other farm animals are used. In India gobar or cow dung is used for the purpose of making biogas
all liquid, gaseous, and solid hydrocarbons. Under surface pressure and temperature conditions, lighter hydrocarbons methane, ethane, propane and butane occur as gases, while pentane and heavier ones are in the form of liquids or solids. However, in an underground oil reservoir the proportions of gas, liquid, and solid depend on subsurface conditions and on the phase diagram of the petroleum mixture. An oil well produces predominantly crude oil, with some natural gas dissolved in it. Because the pressure is lower at the surface than underground, some of the gas will come out of solution and be recovered (or burned) as associated gas or solution gas. A gas well produces predominantly natural gas. However, because the underground temperature and pressure are higher than at the surface, the gas may contain heavier hydrocarbons such as pentane, hexane, and heptane in the gaseous state. At surface
(CHP) plants. District heating can also use other heat sources that are difficult to use for individual buildings, such as unrefined biomass fuels, heat from waste incineration and industrial surplus heat. The latter may, for example, be a by-product from production of automotive biofuel. District heating can provide cheap energy to consumers by using low-cost energy sources, such as wood, waste and surplus heat. Many of these resources can be of local origin and promote local business and industry. The main advantages with district heating are high security of supply through utilisation of domestic renewable energy resources, if available, low primary energy demand due to high conversion efficiency, as well as small CO2 emissions thanks to low fossil fuel use and the high energy efficiency. Incineration of waste with heat recovery to district heating may be used at very low cost
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