Clean Energy for Green Earth – Power Generation & Energy Sources » Energy From The Sun

Renewable Energy – Sources That Never Get Exhausted

admin — Sat, 24 Jul 2010 06:17:22 +0000

fossil fuels like oil, natural gas and coal used worldwide as primary sources. Because they are used up much faster than they can be renewed, they are known as non-renewable sources.

Non Renewable energy sources account for about 90% of the energy used today. These sources are being depleted. Since they are known to have an impact on air quality, causing human and environmental health problems, greater emphasis is placed on renewable energy as a new challenge for energy. Renewable energy sources consist of solar, hydro, biomass, geothermal and ocean. These energy sources will never be exhausted, and is environmentally friendly because they do not contribute to the greenhouse effect or global warming.

Solar energy is the most available renewable energy source. We have used solar energy for billions of years. Prehistoric men enlarged his powers to start fires. Today, solar panels absorb energy from the sun to generate heat for cooking and heating, as well as electrical needs. This heat absorption is saved for later use, and is an indirect conversion of energy. Currently, utilities are trying to use photovoltaic technology to convert solar energy directly into electricity.

Hydro Energy draws on the energy produced by flowing water. Waves are a result of the wind interacting with the surface of the sea. This interaction allows a transfer of energy that can be extracted to generate electricity using wind turbine generators. Although hydropower is non-polluting, it can do harm to the environment. Hydro electric power plants can alter the flow of the sea and thus harm plants and animals.

Wind energy, or kinetic energy derived from movement of air. It has been used for hundreds of years for sailing, grinding grain and irrigation. Today, wind turbines convert energy from wind into mechanical energy or to charge the batteries. The wind machines, or wind turbines collect the kinetic energy by catching the wind in the leaves. The blades then turn an electric generator to produce energy. Unfortunately, wind energy collection is available on windless days. Although it is a clean form of energy, it has had a negative effect on wild bird populations and some believe giant wind machines are not attractive looking.

Biomass energy comes from wood, waste, food crops, manure, grass and plants, agricultural and forestry wastes and residues. Basic comes from waste. This renewable energy is not new. It was used over 100 years ago in the form of stoves, which supplied 90% of energy needs at the time. When biomass is burned, it produces heat or electricity. It can also be converted to methane gas, which is the main ingredient in natural gas. It represents 3% of the energy in the U.S.. Although biomass can pollute the air and releases a greenhouse gas, it is not as polluting as fossil fuels.

Geothermal energy is basically the Earth’s heat. It comes from hot dry rocks, magma, hot water springs and hot geysers. These are inside the Earth’s subsurface. Some are found deep within the Earth’s surface, and others are closer to the surface. Today this type of energy used to heat water in swimming pools and spas, and to heat buildings like greenhouses. It can also be used to produce electricity using a geothermal power plant. In these plants the hot water travels through turbines connected to a generator.

Ocean Energy is produced from ocean waves or temperature differences in water. Wave energy is the kinetic energy from moving water. Tidal energy involves trapping tidal waves in reservoirs behind dams. Ocean Thermal Energy Conversion uses differences in water temperatures from surface to deeper depths of water as an energy source. For this to work there must be a temperature difference of 38 degrees Fahrenheit.

As you can see, there are various renewable energy sources available to us as an alternative to fossil fuels. There are many benefits for them among the most popular is that they will not deplete the supply, which means that they will be around forever. Renewable energy is not new. They have been used in one way or another for many years. Unfortunately, low fossil fuel prices stunted renewable energy’s popularity and growth in the U.S.. But a growing awareness of human and environmental concerns, and that a need to find non-exhaustible energy, will keep it as a cornerstone for the future.

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Fundamentals of Renewable Energy Processes

admin — Tue, 20 Jul 2010 18:28:35 +0000

Product Description
Fundamentals of Renewable Energy Processes contains the technical details necessary to understand the engineering principles that govern renewable energy application at many different levels. Focused on the fundamental mechanisms and processes that underpin energy management, it gives students the foundation of all energy process courses. This text is organized by the main forms of energy – heat engines, hydrogen energy, energy from the sun, and w. . . Read more>>
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Modern Renewable Energy Technologies

admin — Mon, 21 Jun 2010 14:17:50 +0000

In many countries today, a lot is said about using renewable energy technologies – especially in light of rising oil prices. Renewable energy is power that has been generated from renewable resources – in other words, it does not “run out” or eventually become depleted. It can be continuously recreated. It is not just the price of oil that has people searching for clean and renewable energy sources. Global warming problems and problems of international pollution has triggered this concern also. Governments around the world have begun to support research into improving renewable energy technologies. At present, five common renewable energy sources are biomass, hydro, geothermal, wind and solar. Biomass Biomass consists of organic matter produced by animals and plants. Biomass energy uses stored energy from the sun. This is a result of the natural process that all plants use to survive – photosynthesis. Because we can always grow new crops and trees, biomass is seen as a form of renewable energy. In addition, organic waste is used to create biomass as well. Some examples of commonly used biomass fuel crops, wood waste and manure. When these materials are burned, they emit heat which produces steam, which in turn can be used to generate electricity. Some biomass is converted to other usable forms of energy such as methane gas or biodiesel. Hydropower Hydropower is one of the oldest forms of renewable energy. It was used in antiquity to grind grain. Coal was once the only source of power in the U.S.. But in 1880, was the first hydroelectric power station built, and since then several of these have been raised in order to provide people with electricity. geothermal Geothermal Energy comes from inside the Earth. The steam or heat, which originates from the center of the earth can be used to regulate temperature in buildings, and can be used to generate electricity as well.
Because water can always be supplemented by rain, and because the earth’s core maintains its temperature, this is regarded as a form of renewable energy. Wind Power Even the omnipresent wind can provide a renewable energy source. Wind is created by the uneven heating of the earth’s surface which causes air to move. Thus wind power is mainly a by-product of solar energy. Wind propellers used to collect wind kinetic energy, which turns turbines, which in turn is used to generate electricity. Solar Power This form of renewable energy will be available as long as the sun shines. Solar energy can either be used as thermal energy, or it can be converted into electricity. As a thermal energy can be used to heat water or spaces. Through the use of solar cells or other photovoltaic devices, it can be used to create electricity. The heat from the sun can also be used to create steam, which comes turbines and thus generate electricity.

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Renewable Energy Technology Has Lots of Potential

admin — Fri, 07 May 2010 02:35:31 +0000

The four main < strong> renewable energy technologies â?? solar, wind, hydrogen and biomass has plenty to offer. Wind power is seen as having the maximum potential in terms of development and investment. It has created interest in the governments and peoples, because if the cost-effectiveness in the production of electricity. Some of those countries that embrace wind power on a large level, Spain, Germany, India, America and China. Renewable energy sources are refillable stand and will never run dry. The maximum amount of renewable energy from the sun and solar energy can be used directly for heating and lighting of houses and even business premises. Did you know that the sun is also responsible for the varying patterns of wind, which is then captured by the wind? In this situation, where pollution is at its peak and we are breathing polluted air along with coping with the global warming impact of using renewable energy technology is important because not only the have environmental benefits, it also saves you tons of money. Renewable energy technologies is clean and has extremely low environmental impact in contrast to conventional technologies. Most homes today use fossil fuel-generated grid power as a source of electricity. But with increased awareness people are beginning to focus on solar and wind turbines. Wind turbines are mounted on tall towers, so to catch as much wind as possible. The mill caught wind of the wings. Normally, three leaves are present in a turbine. When the wind blows, the low pressure is formed just below the wings, causing the rotor below the mill to turn. If you want a detailed plan, you can go online and get one. There are many manuals that have those instructions. Buy This manual provides clear instructions.

The author has been in energy savings from the last five years, and now he invites you to understand how to save energy at home, on his website Renewable Energy 4 Earth . If you save energy, you are indirectly saving money in addition to reducing costs. Read more about this concept, visit renewableenergy4earth. com today.