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Renewable Energy Sources – A Brief Introduction
Posted on December 12, 2011It appears as though the crusade to determine the best alternative energy sources are seriously being looked into by lots of countries including most American cities. One validation is the signing of the Kyoto Treaty. The primary purpose of the concerned group and individuals is to decrease the greenhouse gases and pollutants.
These renewable energy sources have demonstrated to be of great aid in cutting down the amount of toxins, which are by-products of the consumption of energy. These sources also preserve most of the natural resources that people use as resources of energy. For example, after a solar panel converts the sun’s rays into energy, the sun will still shine for someone else to use. What are the most popular sources of renewable energy? Here’s a list to give you some basic information:
1. Solar Energy – Harnessing the sun’s powerful energy is definitely not something new. Capturing the radiant light and heat from the sun has been practiced since ancient times. Since the rapid evolution of technology, we are now able to trap the sun’s rays into solar cells. Since the 1950′s solar cell technology has been advancing and has come quite a long way. The process turns the heat coming from the sun into electricity. Photovoltaic cells mounted on rooftops are used to heat water using the sun’s rays. The water goes into a storage tank where the power is stored, ready for use. But you don’t need all these scientific processes to be able to benefit from solar power. All you really have to do is open the windows and blinds on a nice sunny day to let the sunshine in.
To date, the main disadvantage of using this source is that it is limited. You cannot use it obviously on nighttime and during days when it is raining or even on cloudy days. This has been acted upon through solar power stations. But these are too expensive so there aren’t too many of these stations around the globe.
2. Wind Energy – Another ancient source of power, wind energy has been harnessed by sailors, farmers and architects for many years, even documented as far back as 5,000 years ago. The energy coming from the wind supercharges the blades of the wind turbines. As this happens, electricity is produced through the use of an electrical generator. In the old days, windmills were created so that mechanical machinery could perform physical labor. This includes the pumping of water and crushing of grains that were essential in planting and farming.
Now there are large scale wind farms that produce electrical currents. The end products are then distributed to national electrical grids and small turbines owned by individuals to distribute electricity to far flung areas and homes. There are many advantages of this kind of power. The main one, of course, is that this doesn’t produce any by-products that can be harmful to the environment. And we will never run out of this source of renewable energy. One of the main disadvantages of wind power is that it’s never a constant speed or direction, so wind turbines have to be able to move with the direction of the wind.
3. Geothermal – Geothermal energy is energy obtained by tapping heat from the earth itself. Holes are drilled in certain regions, magma and radioactive decay that can be found underneath produce steam. This steam is purified and used to drive turbines. These turbines then become the power source for electric generators.
The downside to geothermal energy is the fact that it is expensive to build, and to ensure that no harmful by-products are going to be produced in the process, geothermal plants must be created accordingly. On the other hand, because the earth’s crust continuously decays replenishing the heat, it is still a renewable source of energy.
4. Hydroelectricity – The use of hydroelectric power or even hydroelectricity dates back to Ancient Greece and China where they installed waterwheels in rapidly flowing rivers to turn millstones and other equipment. Hydroelectric plants today still use the same basic principles as the historical waterwheel, but with some variations. The difference is that we use the force of the water to push the turbine which in turn powers a generator thus generating electricity. The idea here is to make use of the kinetic energy of water. To make sure that there is a steady flow of power being produced, a dam has to be built to retain the water. If there is a need for more power, the gates of the dam are opened so water can be released.
There are issues with the use of hydroelectricity. Some claim that it poses a problem for fish and aquatic plants on both sides of the dam. Because the flow of water has been altered, the nutrient rich silt which helps crops grow could be affected.
5. Bio-Fuels – Bio-fuels are also a green energy source. They have been around for a very long time however just lately, people are beginning to take notice.During photosynthesis, plants grow and produce biomass. Also known as bio matter, biomass can be used directly as fuel or to produce bio-fuels. Agriculturally produced biomass fuels, such as bio-diesel, ethanol can be burned in internal combustion engines or boilers. Typically bio-fuel is burned to release its stored chemical energy. Liquid bio-fuel which is the one used in cars is a natural and renewable domestic fuel that can only be used for diesel engines. This can be made from vegetable oils mostly soy and corn. In fact diesel engines were originally created to run on vegetable oil! The nice thing about bio-fuels is that they contains no petroleum, and they are nontoxic and biodegradable.
By fueling up with bio-fuel, you decrease the pollutants in the air because it does not emit anything. Right now, it is the only fuel approved by the Environmental Protection Agency (EPA), passed every Heath-Effects Test of the Clean Air Act and meets the requirements of the California Air Resources Board (CARB).
Just by reading through the available alternative energy sources, you will be amazed at how nature works wonders. It is our responsibility to care for the environment around us and keep it clean for generations ahead of us.
By: Michael J.
Solar Panel Importance – Using Solar Energy Magic For A Better World
Posted on November 27, 2011The idea of solar energy started over 100 years ago, but the technology hasn’t been as great as it is until today. With companies finding new ways to use renewable energy resources, solar energy is going to be more important. Solar energy is one of the best renewable energy sources because it is so abundant. We’ll never have a sun drought, we’ll never have to wait for the sun to pick up nor will we have to drill into earth like with many of the other renewable energy resources. However, to use solar power, we need solar panels. Solar panels are important because without them the idea of solar energy would be useless.
Solar panels work in two different ways. First there are solar cells that convert light energy into electricity. This is a little on the expensive side, which doesn’t make it as popular as the way energy is used now. However, they are found on a number of products. Space shuttles and satellites use them. Parts of these are covered in solar panels. These objects have the space for all the panels it would need. Another way to use solar panels is by using the heat from the sun. The solar panel attracts the heat and heats up a liquid with a low boiling point. This liquid is transferred to water where steam is used in a generator. This process is simple, cheap and effective.
Solar panels come in different forms and there is no exact shape for one. There are different versions of solar power as well. There is concentrated solar power, which is a sea of mirrors combined together to attract the sun’s heat. These are usually out in the desert and use thermal energy to create ways to heat homes, heat water and power machines. This type of energy is a little more expensive than wind energy, but costs less than photovoltaic energy, which is commonly used in households.
It has become cost effective to use solar power to heat and power your home. In the beginning stages of the production of solar panels, it took adventurous people to take a chance on it. Since the early stages, solar panels have been modified to attract to sun better. Different types of metal have been tested to see what works best. In the concentrated solar panels, which is also known as parabolic trough solar, aluminum is the best overall metal for its ability to attract the sun and sturdiness in an outside environment. The technology is getting cheaper for residents to use as the process gets more refined.
Solar panels are important to the evolution of the society. It is important for countries, such as the United States, to move away from the dependency on foreign oil and to use energy resources that are readily available. No one can deny the sun isn’t a steady resource. Even on cloudy days, there should be enough light and leftover energy to power homes through the day. More countries have to discover ways to use solar panels as part of everyday life. The problem is it is still cheaper to use fossil fuels in the short term. In the long run, solar panels will be everywhere making energy cheaper than before.
By: Abhishek Agarwal
Renewable Energy – An Overview
Posted on November 23, 2011
When speaking about renewable energy, we are talking about power which derives its energy from resources which will not be diminished from the use. Renewable energy is a substitute for the non-alternative energy of fossil fuel due to other reasons than non-depletion.
One fundamental advantage of renewable energy, and environmentalists’ favorite reason to tout its use, is that there are no greenhouse gases or other pollutants emitted as there are with the burning of fossil fuels. Alternative energy, or solar, water and wind power, are certainly not new although they have received much attention recently. Wind, solar and water power have been utilized as power sources in both developing and developed countries for a long time, but they have yet to be used as a primary source of energy for any big metropolitan area.
The generation of power from alternative energy sources has become somewhat more common in recent times as people have increasingly become aware of issues such as climate change due to fossil fuel byproducts and depletion and the political or social worries about nuclear power. There are numerous countries and non-profit, environmentally conscious organizations that are endorsing the use of alternative energy by enacting tax incentives for its use and by subsidizing the cost of transitioning from fossil fuel to renewable energy.
The flow of alternative energy has to do with naturally occurring phenomena. Tides, sunlight, wind and heat are all created by geothermal events and all are sources of renewable energy. Each of these sources of energy has unique characteristics pertaining to where and how we can use them.
Most technology which transforms renewable energy into power which we can use is solar powered either directly or indirectly. The atmospheric system of the earth maintains equilibrium such that the heat which radiates into space is equal to the amount of radiation received from the sun. The quantity of energy contained in the atmosphere approximates the earth’s climate. The bodies of water of the earth, or its hydrosphere, absorb much of the radiation which is received from the sun.
And much of that absorbed radiation is in the lower latitudes surrounding the equator. The energy is dispersed throughout the earth, though, by both ocean and wind currents. It is thought that the action of the oceans’ waves may play a role in the transference of mechanical energy between ocean and atmosphere by means of wind stress. Solar energy additionally is instrumental in the distribution of precipitation which is utilized in hydroelectric energy production as well as in plant growth which ultimately results in biofuels.
By: Jay Strickland
Creative Communities Protect Our Military Men and Women
Posted on October 24, 2011
Returning military personnel should have guarantees from the American people that they and their families will be protected from neglect when they return from combat. How do we accomplish this? We do what many of our soldiers did to fight for our freedoms – boots on the ground, one strategy after another. Rather, our community members should have shoes on the ground.
Communities have a responsibility to ensure that their sentiments toward the wars in Iraq and Afghanistan are divided from their sentiment for the soldiers who are on the front line. There is a need for a direct focus on facilitating the course for the returning soldiers that leads to solace, hope and a retrieval of neighborhood familiarity.
Our communities should be empowered to protect and assist their reinvesting warriors for a more organized and less complicated return to working and thriving. In the U.S., there is a deficit of a national strategy to accomplish this. Our communities must take responsibility for providing for the reinvestment of warriors and neighbors as they work through their post war lives together and to incorporate the most sensitive, efficient, functional and protective mechanisms to meet the needs of our veterans and their families.
All our communities should have a bank of tools they can use to ensure the safe and effective integration of our military men and women into the communities. The “tools” that exist in each community toolkit may be different. For instance, one community may have the resources to design and execute an annual conference bringing all veterans together to discuss their needs to safely and effectively re-integrate to their communities.
Another community may have the resources to offer a Chain of Support. Within each “chain” is one volunteer from the community who has volunteered to provide what they know best. For instance, a hairdresser may offer one free haircut per week to selected veterans. A pet lover may offer his/her services to walk a pet, for free, for one veteran each weekend.
There is an abundance of creative ideas to achieve healthy and well-integrated communities who embrace the return of military men and women who have risked their mental, emotional and physical well being to protect the freedoms that allow our communities to thrive. Each community can and should step up.
By: Ethan Richard
4 Reliable Suppliers Of Alternative Energy
Posted on October 24, 2011
1. Amelot Holdings is a US based company specializing in development of ethanol and biodiesel plants. It establishes relationships between the researchers and suppliers of alternative energy. The company facilitates joint ventures and mergers between the research facilities and the manufacturers of alternative energy. Thus, there is exchange of information and technology which helps to promote the growth of the alternative energy industry.
2. Environmental Power is another alternative energy supplier. It has two subsidiaries namely Microgy and Buzzard Power. Microgy undertakes research and development in the field of alternative energy. It has developed a cost-effective biogas facility by making use of agricultural and plant waste. It focuses on eco-friendly production of renewable energy like biogas to compare with the standards of natural gas. The biogas is used in combustion engines, and for heating homes and offices. Buzzard Power has an 83MW power facility to generate ‘green’ energy from coal waste.
Environmental Power has been in existence from the year 1982 and has a long history of development in the field of clean energy. The company has developed and operated municipal waste projects and hydroelectric plants and assisted in clean gas generation and energy recovery. It has a team of experts from the agriculture and finance sectors to manage the business and help its growth and expansion.
3. Intrepid Technology and Resources Incorporated (ITR) processes animal waste into natural gas as an alternative energy resource. America’s supply of natural gas is depleting. ITR believes that the two billion ton animal waste produced every year can be used to generate natural gas to tide over the deficit. Their ‘organic waste digesters’ built close to the sites of the organic waste, produce clean methane gas which is a viable option to natural gas. The company is based in Idaho but plans to expand its operations to the whole country.
4. Nathaniel Energy generates energy from waste matter. The company has devised s system known as Total Value Preservation System (TVPS) which sees the potential of waste materials to generate energy. Industrial waste matter which would have otherwise been discarded or destroyed is being put to optimum use to recover the trapped energy. The production costs towards generation of alternative energy are equivalent to the costs incurred by a company to install pollution control systems and preventions. TVPS is an innovative technology which recovers valuable resources that other processes fail to do.
There are many companies such as those listed above, which use innovative technology to augment our diminishing supply of natural resources by adopting environmentally safe methods to generate alternative energy or renewable energy. There is a need to invest in research towards finding alternative sources of energy as a replacement to fossil fuels. The future of the world depends on industries which can help to achieve this goal. The governments of the various countries need to co-operate in terms of exchange of ideas and information to solve the problems of global warming and environmental pollution. Alternative energy suppliers like the above mentioned companies can play a major role in this process and the government can promote these companies by providing them subsidies.
By: Abhishek Agarwal
Is Alternative Energy Really Needed in 2009?
Posted on October 18, 2011At the moment, in the world we live in, the primary source of energy is derived from petroleum or oil if you like, and other mineral derived energy resources. Oil is a commodity that can quite literally send countries to war and hold others to ransom. Unfortunately oil and mineral energy is not as easily renewed as it is depleted, and it is for this reason that renewable energy resources are being constantly sought and tested, some of them very successfully.
Because mineral energy sources are rapidly being depleted, it is really up to every man in the street to do his bit not to waste any form of energy. This is where energy saving starts, at grass roots level. However, even if you still drive that Hummer to work with only yourself in the car, don’t worry, you won’t be forced to ride a Toyota Prius just yet. So it is not all doom and gloom (perhaps).
There is a very great need for alternative energy resources, and at the same time there will be some incredible opportunities to be created for making money out of this. There is a huge consumer demand for mineral energy replacement sources. It makes very good sense that we all make a great effort to reduce our dependency on petroleum and other mineral resources. Technology to accomplish this is already available, and large, world-wide, multinational companies are investing huge amounts of money into getting environmentally friendly energy resources off the ground.
Various cheap and convenient, as well as clean forms of energy are already available. For instance solar panels for heating water and homes have been used for many years already. As well as solar power, we find geothermal power, wind and other energy solutions which have extremely low carbon emissions available.
Countries globally have state controlled utility companies; these are investing a great deal of money into finding suitable replacements for mineral energy resources. This money goes towards finding renewable solutions which are easily sustainable. Green resources have quite literally become the thing of the future and the sooner we have them available the better.
India has already in 2007 installed an 11 Gigawatt renewable source of power, most of which investments to support this, are being placed in wind energy. India has the largest total population of any other country in the world. They are also placing a great deal of research and development capital into both solar and bio-fuels.
Various countries are already placing emphasis on the fact that investments into energy resources have to be directed at renewable resources. They are planning to make this mandatory, so in many instances power companies are quite literally pouring investment money into this kind of research.
Governments are offering incentives to power related companies to attract foreign investment into renewable energy resources. They are doing this with the hope that solutions in this regard will reap long-term benefits. Other countries will want to purchase any viable solutions from them and this can generate massive amounts of income.
So far the wind has been seen as one extremely successful renewable energy resource. It can be used to generate electricity by means of wind turbines and this is becoming an increasingly popular solution. It is an environmentally friendly solution, and the technology available to generate power from wind is fast becoming more viable.
By: Alexis Jameson
Awaited Tidings About the United States Oil and Natural Gas Sector
Posted on September 25, 2011The production of the oil and natural gas in the United States reached peak during 1970 and the veterans of the oil sector is performing evaluation to find, how long the oil and natural gas resources will be able to meet the raising global demand. For the past few years the extraction of oil and natural gas from the oil wells are drilled excessively and anyone could not predict the amount of oil and natural gas present. According to the predictions made by many people across the world, the supply of oil and natural gas has reached its peak but it could not satisfy the global demand. Leading countries like United States used to supply crude oil at cheaper cost, those days are passed away. Globally leading countries like United States, China,India etc are questing for oil reserves to meet the future demand but unable to find oil rich wells.
Rapid growth in technology and the investments in oil and natural gas sector have led to advent of many innovative technologies, which will ease the shale gas drilling operation. Many oil wells for sale advertisement is getting popularity these days and method like 3D seismic analysis and visualization technologies are used by the geologist to locate the oil wells that are rich in resources. New drilling method like horizontal drilling is practiced to find oil and the areas which were previously considered as fully exploited, has oil resources in them. The rigorous exploration for fossil fuel by various international companies will lead to a huge increase in the price of the oil and gas products, since more intense methods are used for exploring oil.
The process of coal mining was started during the middle of seventh century in the state of Pennsylvania. Primarily the coal extracted was not used for producing electricity, only after eighteenth century the coal was used for lighting the houses. The main aim of coal extraction was to feed the steel industries but after few years coal was used for generating power. Then it started to flourish globally and coal mining practices was adopted by many countries and international companies. United States predominately depends on coal for their energy needs but the coal affects the environment largely. The coal when burnt releases much gas that affect the greenhouse and leads to global warming. Moreover the water bodies in the state of Pennsylvania are highly polluted and in many areas of the United States aquatic flora and fauna are disturbed.
By: Codell Melvyn
Disadvantages of Alternative Energy
Posted on September 09, 2011
Alternative energy would seem like a good choice for new home builders and people who are in the market to buy a new automobile. There are disadvantages of alternative energy that realistically need to be considered.
One of the biggest disadvantages of alternative energy is that it cannot be stored like coal and natural gas can. Storage is a huge issue because using alternative energy puts us at the whim of Mother Nature. If there is no wind for a week, relying on wind power becomes a problem. If you are too far north, solar panels will only produce sufficient energy when the Northern Hemisphere of the planet is tilted towards the sun and so on.
Other sources of alternative energy are being studied as well to power not only our homes but our vehicles as well. Hybrid cars have been on the market for a while. They use the same idea as an electric car only they don’t need to be plugged in to recharge. They use their braking system to regenerate power and they still have all of the engine power of a gasoline engine. New technologies to produce a fuel cell vehicle are currently underway along with a hydro-powered hybrid using hydrogen.
Another of the disadvantages of alternative energy is that it can be expensive to implement into our already set up infrastructure. Most of the alternative energy resources available today require a different type of wiring system than what we currently have in place. This could cause the transformation to alternative energy sources to be delayed until we have depleted the remaining amounts of fossil fuels found on our Earth today.
Fossil fuels are less expensive right now than alternative energy due to the amount of changes that have to be made to adapt a alternative energy plan. This proves to be another one of the disadvantages of alternative energy. Fossil fuels are readily available and easy to use. They can be transported to almost any location for use. Power plants are already set up for burning fossil fuels like coal and this makes the whole process less expensive than transforming to alternative energy.
The advantages of using alternative energy will be realized when people are forced to make the change if for example, we deplete all of our fossil fuels or the cost of use simply become prohibitive. The disadvantages will slowly fade away as more and more people use alternative energy as their source of power.
By: Richard Chapo