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| Index by Topic Web Directory |
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| Advertise Your Company Here |
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| Advertise Your Company Here |
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| Advertise Your Company Here |
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| Advertise Your Company Here |
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Advertise Your Company Here
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Advertise Your Company Here
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| US Environmental Protection Agency |
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The U.S. Environmental Protection Agency's Clean Energy Programs are designed to improve the national foundation of information on clean energy by creating networks between the public and private sector, providing technical assistance, and offering recognition of environmental leaders that adopt clean energy practices. |
| www.epa.gov |
| The construction of hydropower plants can alter sizable portions of land when dams are constructed and lakes are created, flooding land that may have once served as wildlife habitat, farmland, and scenic retreats. Hydroelectric dams can cause erosion along the riverbed upstream and downstream, which can further disturb wildlife ecosystems and fish populations. There are three types of hydropower facilities: impoundment, diversion, and pumped storage. Some hydropower plants use dams and some do not. |
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| CoolCaledon - Micro Hydro: Hydroelectrics |
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COOL Caledon is the Town of Caledon sponsored taskforce committed to reducing greenhouse gas emissions, smog, other harmful air pollutants and climate change. Our mission is to give residents, business owners and municipal operations managers, easy ways to achieve cleaner air, a healthier environment and better way of life. One alternative energy method is through Micro hydro plants. |
| www.coolcaledon.org |
| Hydroelectric power plants affect various fish populations in different ways. Most notably, certain salmon populations in the Northwest depend on rivers for their life cycles. These populations have been dramatically reduced by the network of large dams in the Columbia River Basin.1 When young salmon travel downstream toward the ocean, they may be killed by turbine blades at hydropower plants. When adult salmon attempt to swim upstream to reproduce, they may not be able to get past the dams. For this reason, some hydroelectric dams now have special side channels or structures to help the fish continue upstream. |
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Advertise Your Company Here
To find out more call or email us at:
ads@shoppalmsprings.com
(760) 208-4966 |
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Advertise Your Company Here
To find out more call or email us at:
ads@shoppalmsprings.com
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Hydropower
With 80,000 megawatts of generating capacity, hydropower is the nation's largest renewable electricity source. Working with industry, the Wind and Hydropower Technologies Program pursues R&D to develop more environmentally friendly technologies to maintain the nation's existing hydropower capacity.
How Hydropower Works.
Hydropower is using water to power machinery or make electricity. Water constantly moves through a vast global cycle, evaporating from lakes and oceans, forming clouds, precipitating as rain or snow, then flowing back down to the ocean. The energy of this water cycle, which is driven by the sun, can be tapped to produce electricity or for mechanical tasks like grinding grain. Hydropower uses a fuel—water—that is not reduced or used up in the process. Because the water cycle is an endless, constantly recharging system, hydropower is considered a renewable energy.
When flowing water is captured and turned into electricity, it is called hydroelectric power or hydropower. There are several types of hydroelectric facilities; they are all powered by the kinetic energy of flowing water as it moves downstream. Turbines and generators convert the energy into electricity, which is then fed into the electrical grid to be used in homes, businesses, and by industry.
What is Hydropower?
Hydroelectricity is electricity obtained from hydropower. Most hydroelectric power comes from the potential energy of dammed water driving a water turbine and generator. Less common variations make use of water's kinetic energy or undammed sources such as tidal power. Hydroelectricity is a renewable energy source. Hydroelectric energy is a renewable energy source dependent upon the hydrologic cycle of water, which involves evaporation1, precipitation2 and the flow of water due to gravity.
The energy extracted from water depends not only on the volume but on the difference in height between the source and the water's outflow. This height difference is called the head. The amount of potential energy in water is directly proportional to the head. To obtain very high head, water for a hydraulic turbine may be run through a large pipe called a penstock.
1 Evaporation is the process whereby atoms or molecules in a liquid state gain sufficient energy to enter the gaseous state.
2 In meteorology, precipitation is any kind of water that falls from the sky as part of the weather.
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| Categories that start with the letter,"H": |
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Electricity from Hydropower
Hydropower is considered a renewable energy resource because it uses the Earth's water cycle to generate electricity. Water evaporates from the Earth's surface, forms clouds, precipitates back to earth, and flows toward the ocean.
The movement of water as it flows downstream creates kinetic energy that can be converted into electricity. A hydroelectric power plant converts this energy into electricity by forcing water, often held at a dam, through a hydraulic turbine that is connected to a generator. The water exits the turbine and is returned to a stream or riverbed below the dam.
Environmental Impacts of:
Natural Gas
Coal
Oil
Municipal Solid Waste
Non-Hydro Renewable
Nuclear Energy
Hydropower is mostly dependent upon precipitation and elevation changes; high precipitation levels and large elevation changes are necessary to generate significant quantities of electricity. Therefore, an area such as the mountainous Pacific Northwest has more productive hydropower plants than an area such as the Gulf Coast, which might have large amounts of precipitation but is comparatively flat. |
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| Suggested Reading: |
The Homeowner's Guide to Renewable Energy:
Achieving Energy Independence through Solar, Wind, Biomass and Hydropower
by Dan Chiras |
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The coming energy crisis caused by a peak in global oil and natural gas production will profoundly affect the lives of all North Americans. As the price of these vital fuels rises, homeowners will scramble to cut their fuel bills. Two options for meeting the upcoming challenge are dramatic improvements in home energy efficiency and efforts to tap into clean, affordable, renewable energy resources to heat and cool homes, to provide hot water and electricity, and even to cook. These measures can result in huge savings and a level of energy independence. |
Publisher: New Society Publishers (February 1, 2006)
Product Dimensions: 8.9 x 7.5 x 1 inches |
| The Homeowner's Guide to Renewable Energy gives readers sufficient knowledge to hire and communicate effectively with contractors and, for those wanting do installations themselves, it recommends more detailed manuals. With a complete resource listing, this well-illustrated and accessible guide is a perfect companion for illuminating the coming dark age. |
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