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Hydroelectric power for essay
Hydroelectric power for essay
Hydroelectric power for essay
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Hydroelectric Power Earth Science By Austin Edwards Hydroelectric power was one of the first power sources of power used. It is used by the powerful flow of water currents. The first dam ever created for the use of hydroelectric power was built on September 30th, 1882, in Appleton Wisconsin. After that dam, over 2,044 billion-kilowatt hours are being produced each and everyday in all parts of the world. Starting out not being very popular, its production has steadily increased over the years. The reason for its increasing numbers is because of its dependability. Why is it so dependable? There is always water flowing constantly everywhere in the world. Dams are built in the areas where water is moving at a rapid pace, such as rivers and streams. It is so dependable because no matter what happens in the weather or anywhere on earth, unless the river or stream dries up the water will always be at a constant flow. Some days the flow can be quicker than others producing more energy, although it wouldn’t produce as much a slow steady pace is still going to produce a decent amount of energy throughout the day. How do these dams work? There are many steps involved in the process of making this energy, although the first step of the production is the water must enter a series of massive pipes, and the collide with the turbine paddles which results in the paddles spinning. As these paddles spin a long stick is on the outside, which is connected to a generator, filled with magnets where all of the electrons are produced, After all these steps all of the produced electrons are pushed through power lines to power houses, businesses, and schools around the area. After all these steps are complete the water used to push these turbines are now ... ... middle of paper ... ... evacuate are around 80,000 people. So just one dam can cause thousands of people to loose homes and property. Finding a place to fit a giant dam is also a difficult process even being able to remove peoples homes the dam has to be placed in the right spot to have the most production. Also the more things in the way means more things to remove from the area, resulting in more labor, more equipment, and more labor men, all costing thousands of dollars to add to the budget. All in all hydroelectric power is a very useful and powerful tool that the world has. With all this data and debate there are more pros than cons and with the pollution problem, this solution is a must. It is safe to say the world should use as much hydroelectric power as possible to keep the earth clean and healthy while also being able to produce electricity needed by humans in every day life.
What Nuclear power has the ability to do is get a lot of power in a little amount of space. “Roughly 1.6 billion people live without access to electricity, and 2.4 billion rely on traditional biomass because they have no access to modern fuel.” (General Dr. Mohamed ElBaradei) With nuclear power put into these countries that are without power we can have it to where electricity will be accessibility to everyone. By having power accessible to everyone we can accomplish so much more and unlock more possibilities in our world today.
The use of turbines from dams to provide power was a brilliant idea until water levels started running lower than normal. The water waste from humanity is directly contributing to portions of it, aside from drought conditions affected by pollution, widespread fires battled, and more adds to the depletion thereof. When humanity is relying on power provided from dams to handle the demand, they are essentially relying on the assumption that water levels will always be there to provide it. The Hoover Dam provides power to the southwestern portion of the USA that has a large number of people.
...cause there was no established rules for building specifications and anyone was allowed to go in and do what they think will work. That is were the lack of professionalism comes into play, the man hired to fix the dam was un ethical in fixing something that he had no knowledge of and was not trained to do it, and this is why lives were lost. This disaster had a large affect on the nation, the largest being the disasters involvement in the creation of the Red Cross.
If the dam is so beneficial then why is it that all public debate on the issue has been banned since 1989, even for "…scientists and specialists"(Faison, 1997). This has probably been done to slow the process of or eliminate any opposition that may arise to this project. There are a few questions or "What if’s" about the dam, such as "What if the dam collapses?" or "What if during a war or conflict a bomb is dropped on the dam?" and since the dam is built on many seismic faults, will earthquakes be a problem? Besides all of these questions, there are numerous facts that should dissuade any proponent of the dam to insist on its construction. The dam besides hurting the environment, will also "…displace 1.3 million people."(Giaccia, 1997). These people were not asked to leave, they were told, and many of them still have not been compensated for their trouble, but this goes deeper than financial burdens. Individual rights have been violated, the government simply forced these people off their land and out of their homes and this affects children, families and livelihoods.
The narrator of DamNation, Ben Knight, said it was sad how little he knew about dams when he started this film, but I think it’s sad how little everyone knows about them. “Dams and hydropower represent a pivotal time in US history, but just like any other research development in the US we took it too far,” said Ben Knight. In 1889, one of America’s worst disasters in history happened; Pennsylvania’s South Fork Dam failed without any warning. “A Roar Like Thunder” explained how Johnstown was leveled taking 2200 lives. The only thing slightly comical about this was that they called it a natural disaster, but there is nothing natural about creating a wall to stop the flow of a river. In 1902, the promotion of the West began to take over the United
The main parties who is associated with the debate are governments, experts, and the country people. These people have given out their opinions regarding the effects of nuclear ene...
The first type of renewable energy is hydroelectric energy or well known as hydropower. In greek word, hydro means water and thus hydroelectric energy refers to electricity generated using flowing water at high velocity. Lutgens and Tarbuck (1992, p. 163) stated that “running water is of great importance to people as we depend upon rivers for energy, travel and irrigation”. Continuous availability of water in universe made water to be the main source of hydroelectric energy. Water has been widely utilized by mankind since the beginning of civilization and wate...
There are three parts to a typical hydropower plant. The first part is an electric plant where electricity is produced. The second is a dam that open and closes to control the flow of water. Water behind the dam goes into an intake and is pushed against blades in a turbine which causes them to turn. Then the turbine rotates a generator to create electricity.
Next, hydro-electricity is electricity produced by moving water, flowing past a turbine connected to a generator (“Hydropower”). According to Nationalgeographic.c...
How exactly does hydropower work, though? As it turns out, dams are the main source of harvesting energy via hydropower. There are about 80,000 dams in the United States, although not all are active producers of power. There are four main types of hydropower facilities, which all require turbines: impoundment, diversion, run-of-river, and pumped storage. Also, there are two main types of hydro turbines: impulse turbines and reaction turbines ("Hydropower…”).
Diversion dams are mainly built to lessen the effects of floods and to trap sediment.3 Overflow dams are designed to carry water which flow over thier crests, because of this they must be made of materials which do not erode. Non- overflow dams are built not to be overtopped, and they may include earth or rock in their body. Often, two types of these dams are combined to form a composite structure consisting of for example an overflow concrete gravity dam, the water that overflows into dikes of earthfill construction.4 A dam's primary function is to trap water for irrigation. Dams help to decrease the severity of droughts, increase agricultural production, and create new lands for agricultural use.
Wind turbines are a great source of energy around the world. Wind turbines produce wind energy that can be used to power our homes. Wind turbines convert kinetic energy into mechanical power. Then this mechanical power gets generated into electricity. Wind turbines make energy by the wind turning the large blades, which spin a shaft that is connected to the large blades, which then operates the generator making electricity.
The wind is an incredibly valuable renewable energy source and is in the forefront of renewable energy developments. It is used to convert wind energy into energy that can be harnessed and used via a variety of methods, including; wind turbines, windmills, sails and windpumps. For a renewable energy source, however, it is wind turbines that are used to generate electricity (see figure 1). Wind power has been used for this since the end of the nineteenth century, after Professor James Blyth of the Royal College of Science and Technology first attempted it (Boyle, 2012). However, It wasn’t until the 1980s that using wind power technology was sufficient enough to experience a rapid growth of the technology.
Hydroelectric power seizes the buoyancy released from descending water. Two thousand years ago, Ancient Greeks utilized wooden water wheels to convert kinetic energy into mechanical energy because that’s all they had back then. However, in 1882, the first hydroelectric power plant was constructed in the United States using a fast flowing river. During that time, humans began to build dams to reserve water at the most suitable places or areas in order to best apply the power capacity. Engineering and structural changes have been increased in designing a more efficient hydroelectric power plant, but in order for that to happen they had to go through a very difficult process which can cause much conflict. (http://www.ems.psu.edu/~elsworth/courses/cause2003/finalprojects/vikingpaper.pdf)
A steam turbine's two main parts are the cylinder and the rotor. As the steam passes through the fixed blades or nozzles it expands and its velocity increases. The high-velocity jet of steam strikes the first set of moving blades. The kinetic energy of the steam changes into mechanical energy, causing the shaft to rotate. The steam then enters the next set of fixed blades and strikes the next row of moving blades. As the steam flows through the turbine, its pressure and temperature decreases, while its volume increases. The decrease in pressure and temperature occurs as the steam transmits energy to the shaft and performs work. After passing through the last turbine stage, the steam exhausts into the condenser or process steam system. The kinetic energy of the steam changes into mechanical erringly through the impact (impulse) or reaction of the steam against the blades.