Sunday, May 17, 2009

Vertical wind power generators

Wind power generators are the devices that can generate electricity from the renewable wind energy that is possessed by the wind. The most popular and common type of wind power generator used is the vertical wind power generators.

Vertical wind power generators are wind machines that are attached to flat roofs or are made to stand on platforms for the generation of electricity. This generated electricity can be used as an alternative power source in both rural and urban areas.

A vertical wind power generator is designed to incorporate a wind turbine which has either two or three blades. The wind turbines are used to convert the renewable wind energy to electricity. These generators are generally installed at heights so that they can capture large amounts of renewable wind energy easily. The captured wind rotates the blades of the turbine and this movement in effect turns on an electric generator. This electric generator then converts the renewable wind energy into electricity. This electricity is supplied to grid connected systems from which the electricity gets supplied to consumers. The wind renewable power is supplied to homes and industries and can be used for many purposes.

The vertical wind power generators are the least expensive and can be used to generate wind renewable power in a cost effective manner. These are the devices that can be easily installed and transported. These generators can also be considered to be green renewable energy equipments that do not cause any pollution and also do not degrade the environment.

Thursday, May 14, 2009

Growth of wind energy companies

As a renewable energy source, the use of wind energy is ever increasing because of the fact that it will continue to provide energy for a long period of time. Renewable wind energy is a pollution free source of energy and also does not emit harmful particles into the atmosphere that maybe hazardous for the living beings. As a green renewable energy source, it does not contribute to global warming. The increase in the use of wind energy has led to an increase in the number of wind energy companies.

The growth of wind energy companies over the last few years has followed a steep trend. The wind energy companies ensure a cleaner and greener environment by using renewable wine energy. The wind energy companies strive to make wind energy a reliable and efficient alternative energy resource.

Wind energy companies have invested in renewable wind energy because it is a good alternative energy source that can be used in place of fossil fuels. Fossil fuels like coal, petroleum etc. are available in abundance and can be used readily to meet the energy demands. But the manifold increase in the energy demands has put a lot of pressure on these sources, the reserves of which are fast declining. An alternative energy source is thus required to meet the energy demands. This will also help in preserving the coal and petroleum left for future use. Also renewable wine energy is a good alternative to fossil fuels because it is available for almost free whereas the prices of coal and petroleum are rising.

Tuesday, May 12, 2009

Direct use of geothermal energy

Geothermal energy is the heat energy that is obtained from deep inside the earth in either the form of hot water or in the form of steam. It is therefore also called earth energy. Heat energy is provided directly by the geothermal reservoirs found miles beneath the earth’s surface. The heat energy so obtained can be used for several purposes and this is called the direct use of geothermal energy resources.

The direct use of earth energy was made thousands of years ago when geothermal energy resources, the hot springs were used for purposes like cooking and bathing. The innovations and advancement in technology has enabled to use geothermal energy in more sophisticated ways.

The direct use of geothermal energy resources includes heating a single building or multiple buildings at the same time, raising plants in greenhouses, drying crops, heating water at fish farms, pasteurization of milk, generating electricity and in different types of industries.

As an alternative energy source, it is being commonly used today. To get earth energy, a well is drilled into the geothermal reservoir to ensure a steady supply of water. Usually three components namely piping, heat exchanger and a controller are used in a system that uses geothermal energy directly. The water is brought up through the well and the components of the direct use system deliver the heated water for direct use.

With the advancement in technology, better methods and systems have been developed that use this renewable earth energy source in a more efficient and cost effective manner.

Wednesday, May 6, 2009

What is wind energy?

Wind energy is the kinetic energy of the wind which is an alternative energy source being used for a number of purposes. The kinetic energy of the wind can be captured and converted to more useful forms like mechanical energy or electrical energy. Renewable wind energy finds use in both domestic as well as commercial applications. As a green renewable energy source, wind energy does not use any fuels and does not emit any harmful or greenhouse gases into the atmosphere and so is an environment friendly form of energy.

The amount of energy that the wind possesses depends upon the speed of the wind, the air temperature, barometric pressure and the altitude. The amount of energy possessed by wind is more at high altitudes and when the pressure is low. A high speed of the wind means that the wind possesses more energy.

The cost of renewable wind energy depends upon a lot of factors like the installation cost of wind turbines, the amount of renewable wind energy generated, maintenance required etc. Usually the installation of wind turbine is expensive. The innovations and research that is going on has resulted in the development of better technologies that reduce the installation costs of wind turbines. Also the maintenance costs for this renewable energy source are very less. This has resulted in increased use of this alternative energy source.

The use of renewable wind energy is gaining popularity all over the world because it has several environmental, social and economic advantages that allow this alternative energy source to be favorably used.