Many differing opinions exist on what needs to be done about our current status of conserving energy and conserving our environment. With increased gas prices and energy costs, consumers are more aware of what benefits are available and the methods of obtaining them. The introduction of hydropower has been a major step for some, while a stumbling back for others. Advocates for hydropower have provided much information about the many benefits that we reap from using hydroelectric dams. Environmental activists denounce the many negatives that are created by the numerous dams located throughout the United States as well as other countries. Both sides present valid arguments and need to be addressed in order to fully understand the complex social, biological, political, and economic pros and cons. Dams operate by using water as its main source of power. They produce power from fast volumes of moving water that turns a generator. This falling water at one gallon of water per second, can create one kilowatt of electrical power if it falls one hundred feed. When water behind a dam is released, it runs through a pipe called a penstock, which then delivers it to the turbine. Different shapes are used on these turbines, but are generally created to harness kinetic force of the moving water as well as the water pressure. Another use of hydropower is pumped storage. In pumped storage plants, water is pumped from low resevoirs to a higher reservoir during off peak times, using electricity from different types of generators. Operators release it back into the lower reservoir through turbines if power is needed. Some power is initially lost, but pumped storage systems can be about 80 percent efficient. Sometimes it's important to meet power demands where hydro plants have an advantage in their abilities when they also have reservoirs. Most plants may only produce hydro power all the time and can't be adjusted when it comes to wanting more power in times of need. Whereas hydro plants with dams save up the water and allow it to flow only during peak times. These peak times can be beneficial to whitewater enthusiasts, but can also inhibit fishing opportunities because of the increased water flow. The United States is one of the largest producers of hydropower in the world, second only to China. Hydroelectric power is the largest source of renewable electricity in the world and in the United States.
The negative aspects of Glen Canyon Dam greatly exceed the positive aspects. The dam’s hydroelectric power supply is only three percent of the total power used by the six states that are served by the facility. There is a surplus of power on the Colorado Plateau and with more and more power-plants being created in the western hemisphere, Glen Canyon Dam’s power is not needed (Living Rivers: What about the hydroelectric loss). Although the ‘lake’ contains twenty seven million acre feet of water, one and a half million acre feet of water are lost yearly due to evaporation and seepage into the sandstone banks surrounding the ‘lake’ (Living Rivers: What about the water supply?). The loss of that much “water represents millions, even billions of dollars” (Farmer 183). If the government were to employ more water efficient irrigation practices, as much as five million acre feet of water per year could be saved.
It uses flowing water to generate electricity. It does this by using dams and reservoirs for storage. This method gives us the most electricity rather than any other renewable energy source. Not only do the dams and reservoirs create electricity, they also control flooding (Sambu). Hydropower is the least expensive procedure to generate electricity. This is true because “once a dam has been built and the equipment installed, the energy source—flowing water—is free. It's a clean fuel source that is renewable yearly by snow and rainfall. Hydropower is also readily available; engineers can control the flow of water through the turbines to produce electricity on demand”
This Paper will describe and analyze three articles pertaining to the ongoing debate for and against Glen Canyon Dam. Two of these articles were found in the 1999 edition of A Sense of Place, and the third was downloaded off a site on the Internet (http://www.glencanyon.net/club.htm). These articles wi...
To begin, school uniforms are economic. When schools have a uniform policy, it makes it easier on the children and parents. It is convenient because a child can just go to their closet and pick out a uniform and be ready for school. It is also very cost effective. Parents can outfit their children twice a year, warm and cold weather uniforms, rather than spending hundreds of dollars trying to keep up with expensive, name-brand clothing. In addition to being economically beneficial, school uniforms also help reduce distractions in the classroom.
Hydroelectricity uses the power of flowing water to generate electricity.(“National Geographic”) It is a form of renewable energy as the system only utilises renewable resources and does not directly produce hazardous waste. It is an alternative to the generation of electricity using fossil fuels. Although it does not produce as much electricity compared to fossil fuels, it produces enough electricity to “prevent the burning of 22 billion gallons of oil or 120 million tons of coal each year.” As of 2012, Hydroelectricity produces estimating to around ⅕ of the world electricity. (“Alternative Energy”) The main concept of hydropower plants is when water flows through a dam built in a river. Numerous basic components of a hydropower plant include a dam, which holds back water and creates a reservoir. When the gates on the dam open, the water flows through a connected pipe that leads to the turbine. Pressure increases as it flows through the pipe and turns large blades of the turbine, which is attached to a generator. As the turbine blades turn, magnets in the generator rotate past copper coils and produce alternating current by moving electrons. The transformer inside a powerhouse takes the alternating current and conver...
Some people are not as fortunate as other students may be. Enforcing a uniform can help parents and students feel good that they do not have to compete with the latest fashion. Some kids cannot afford to keep up with the “Jones”. When students wear the same things, kids do not have to stress about having the newest brands. Parents do not feel as they have to compete with other families to buy expensive clothing. Many parents cannot work, and having a young teenager working a full time job and goes to school and motivate the student to drop out of school to make money. They will not think ahead in life and feel they can make a living off minimum
After the condensation process is finished and the steam reverts back to water, it is pumped into the reactor again, thus completing the process of producing nuclear-based power. Next, hydro-electricity is electricity produced by moving water, flowing past a turbine connected to a generator (“Hydropower”). According to Nationalgeographic.com, a typical hydro-plant is a system with three parts: an electric plant where electricity is produced, a dam that can be opened or closed to control water flow, and a reservoir where water can be stored.... ... middle of paper ... ...
Hydroelectric is a form of energy it is a renewable resource. Hydroelectricity is the most important and widely used renewable source of energy. Hydroelectric relies on water, which is clean and renewable energy source. Renewable energy comes from natural resources. Non-Renewable energy source includes coal, oil and natural gas. Water is renewable because water continually recycles itself. To harness energy from flowing water, the water must be controlled; a large reservoir is created, usually by damming a river to create an artificial lake or reservoir. Water is channeled through tunnels in the dam. The energy of water flowing through the dam causes the turbines to turn and make the generators move which will produce electricity. Hydro power is the process of changing the kinetic energy of flowing water in a river into electrical power. Hydroelectricity comes from a Greek word for water. Hydroelectric power provides 96% of the renewable energy in the United States. Hydroelectric power plants do not use up resources to create electricity neither do they pollute anything. Although fossil fuels and nuclear power plants produce most of the energy in the United States, hydroelectricity provides 7 percent of total power. Hydroelectric power comes from flowing water runoff from lakes etc. The most common type of hydroelectric power plant is a dam on a river to store water in a reservoir. Hydroelectric energy has been in use for thousands of years and is one of the oldest methods of producing energy. Ancient Egyptians used it to grind grain as early 250 B.C. The first US hydroelectric power plant was built on the Fox River 1882 in Appleton, Wisconsin. The largest hydroelectricity powe...
It has been disputed that school uniforms would encourage protection in our education community. After all, if every student is trying the same style, it would be easier to pick out who on the school property is not a student or staff member. It is also disputed that school uniforms dampen thefts among pupils, since the contest would no longer be there. With identical outfits, no one is slaughtered over a pair of designer shoes or a designer jacket. However, most public schools already have guidelines in place stating that definite colors shouldn’t be worn to school, in areas where this would be an issue - so what has a uniform really unravel? If the students aren't dressed in those colors to begin with, then why do we feel the need to enforce uniforms?
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…”).
A whole new customer relationship technique called SCRM had been developed. SCRM makes it possible to provide a better customer service and also maintain a better customer relationship. Also, there is evidence that the use of social media has a positive effect on the customer satisfaction. Social media generates a lot of big data which brings new opportunities to organisations. By performing data analytics organisations are able to predict the customer buying behaviour and improve the customer experience this results in a more personal relationship between the organisations and the customer.
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.
Hydroelectric Power Plant is when electricity is generated when water in an uphill reservoir flows downhill. The gravitational potential energy of the water changes to kinetic energy of the flowing water which drives the turbines to generate electricity. The efficiency is more than 90%. The environmental impact is Floods large area and affects the ecology of the area, May cause drought downstream if not managed properly, does not cause ai...
Hydroelectricity is a known renewable energy resource that provides substantial benefits for our wealth, our health, and for our global economy. There are five types of renewable energy we can use on a daily basis throughout our lives, but the most widely installed form of renewable energy is hydroelectricity. Hydroelectricity is electricity created by converting the kinetic energy of flowing water. Best thing about this source of energy is that it’s timeless and renewable, which means it will never run out, however we had to figure ways to store this energy. In order for them to harness this energy for other people, they had to build generators that convert all the potential energy of rapid moving water into electrical energy. (http://www.ems.psu.edu/~elsworth/courses/cause2003/finalprojects/vikingpaper.pdf)
A hydropower plant consists of a dam and powerhouse. The dam holds the water in a reservoir, which is kind of like a small lake, and the powerhouse surrounds the turbines and generators that produce electricity. When power is needed, water is let out from the reservoir through a large pipe and into a turbine attached to a generator that spins, in turn, producing electricity. After going through the turbine, the water returns to the river on the downstream side of the dam. (Figure 1.1 shows a typical hydropower plant) (Wikipedia.com)