Hydropower advantages and disadvantages pdf file
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- Hydroelectricity: What are the Advantages and Disadvantages?
- Hydropower in the Context of Sustainable Energy Supply: A Review of Technologies and Challenges
- U.S. Energy Information Administration - EIA - Independent Statistics and Analysis
- Run-of-the-river hydroelectricity
Hydropower has the ability to generate electricity without emitting greenhouse gasses, however, it can also cause environmental and social threats, such as damaged wildlife habitat and harmed water quality. Hydropower is the most important and widely-used renewable source of energy. Hydropower represents about 17 percent of total electricity production.
Most dams in the United States were built mainly for flood control, municipal water supply, and irrigation water. Although many of these dams have hydroelectric generators, only a small number of dams were built specifically for hydropower generation. Hydropower generators do not directly emit air pollutants. However, dams, reservoirs, and the operation of hydroelectric generators can affect the environment.
Hydroelectricity: What are the Advantages and Disadvantages?
Dams are extremely expensive to build and must be built to a very high standard. The high cost of dam construction means that they must operate for many decades to become profitable. The flooding of large areas of land means that the natural environment is destroyed. People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their farms and businesses.
In some countries, people are forcibly removed so that hydro-power schemes can go ahead. The building of large dams can cause serious geological damage. Although modern planning and design of dams is good, in the past old dams have been known to be breached the dam gives under the weight of water in the lake.
This has led to deaths and flooding. Dams built blocking the progress of a river in one country usually means that the water supply from the same river in the following country is out of their control.
This can lead to serious problems between neighbouring countries. Building a large dam alters the natural water table level. For example, the building of the Aswan Dam in Egypt has altered the level of the water table. Once a dam is constructed, electricity can be produced at a constant rate. If electricity is not needed, the sluice gates can be shut, stopping electricity generation.
The water can be saved for use another time when electricity demand is high. Often large dams become tourist attractions in their own right. The lake's water can be used for irrigation purposes. The build up of water in the lake means that energy can be stored until needed, when the water is released to produce electricity. When in use, electricity produced by dam systems do not produce green house gases. They do not pollute the atmosphere.
Hydropower in the Context of Sustainable Energy Supply: A Review of Technologies and Challenges
Chiyembekezo S. Kaunda, Cuthbert Z. Kimambo, Torbjorn K. Box , Dar es Salaam, Tanzania. Hydropower is an important renewable energy resource worldwide.
Hydropower, the creation of mechanical energy through the transfer of kinetic energy created by the flow of water, is currently the only large-scale renewable alternative to traditional electricity sources, such as fossil fuels . As economic development spreads throughout the world, so does the demand for electricity, causing global electricity production to double in just the last two decades. Worldwide, 66 countries already generate at least half of their power from hydroelectricity, but only one third of the economically feasible potential of hydroelectric power has been realized . Widespread poverty has inhibited the access to electricity in much of the developing world, additionally restricting the availability of elementary services like light and running water. The creation and expansion of sustainable, cost-effective, and renewable energy sources is key, as development cannot be enabled without energy .
News, analysis, experiments, videos, games, and educational paths on the issues of energy and the environment for complete and topical information. There are many advantages in using glacier melt waters for the production of hydroelectric power. Glaciers are a source of water that is constant and sure during the summer months, unlike the water of rivers and torrents whose capacity is subjected to remarkable variations depending on precipitation. Consequently, in the summer months, when most of the water courses on the surface suffer a lack of water, the water courses fed by the glaciers instead, are rich in this precious resource. The energy obtained from glaciers can therefore be used in the periods in which the other water resources register minimum levels and due to the melting water of the glaciers it is possible to face situations of energetic emergency such as the recent summer black-outs.
PDF | Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the.
U.S. Energy Information Administration - EIA - Independent Statistics and Analysis
Therefore, hydropower is essential and considered as an economical factor for producing electricity. There are many untapped hydropower resources in the world. This paper is the review paper which presents about the condition of the hydroelectricity in Myanmar in detail.
Run-of-river hydroelectricity ROR or run-of-the-river hydroelectricity is a type of hydroelectric generation plant whereby little or no water storage is provided. Run-of-the-river power plants may have no water storage at all or a limited amount of storage, in which case the storage reservoir is referred to as pondage. A plant without pondage is subject to seasonal river flows, thus the plant will operate as an intermittent energy source. Conventional hydro uses reservoirs , which regulate water for flood control, dispatchable electrical power , and the provision of fresh water for agriculture.
In a hydroelectric scheme, water is stored in a dam and passed through a turbine and generator set before being released back into the river downstream. It is important to note that the power station does not consume any water in this process, it only uses the energy contained in running water to turn its turbines.
Hydro power plants provide clean and affordable electricity in large quantities. They are often the main renewable energy technology choice for governments due to its ability to deliver reliable baseload energy with very minimal fluctuation. Hydro power plants are also able to accommodate changing demand and suited to large scale network response.
Hydropower has the ability to generate electricity without emitting greenhouse gasses, however, it can also cause environmental and social threats, such as damaged wildlife habitat and harmed water quality. Hydropower is the most important and widely-used renewable source of energy. Hydropower represents about 17 percent of total electricity production. Industries also use other renewable sources, including wood, municipal waste, landfill gas, biomass, and geothermal energy to generate electricity. China is the largest producer of hydroelectricity, followed by Canada, Brazil, and the United States. Approximately two-thirds of the hydroelectric economic potential remains to developed.
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