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At the crucial juncture of humankind, renewable energy is the most important element in our daily life. It is almost becoming extinct because of the overuse. The meaning of renewable energy is hidden inside its very name. The energy that can be used more than once is termed as renewable energy.

The renewable energy sectors play a major role in saving the humankind from extinction. When we take the normal life of a human being, in everything he does, from electricity to transport he uses the fuels. Therefore, from this itself we can understand how important fuels are for us in our daily life.

It is only because of man’s over intake of these fuels, that they are becoming dangerously extinct.

There are several renewable energies like the wind energy, solar energy, and nuclear energy and so on. Nevertheless, all of them are on their early stage of development. Therefore, it will take many more years for it to come up and be consumed by man properly.

If we take transport as an example, we can see that oil is the most important fuel used for transportation. Moreover, because of this, oil, petroleum, and others are becoming extinct day by day. Therefore, man has to change their life style and start using the renewable sources, if they want to continue using the non-renewable resources. 

However, the solar energy is becoming popular day by day. Even though the sun is producing a large amount of energy everyday, we are not using them completely. The sun produces about nine thousand times the total energy use of the entire earth. Although, such a lot of energy is being produced everyday, it is completely going waste. 

The fossil fuels or the non-renewable energy takes millions and millions of years just to form, where as wind energy, solar energy and so on is instantaneous and always present.

Therefore, we have to make up our minds to use these renewable energies more to save our humanity.  

Solar energy technology is a relatively new field, but one that has turned out to be very exciting and full of opportunities for free, clean energy that will help offset our reliance on fossil fuels. Solar energy is typically captured through the use of photovoltaics, which are panels of material that are capable of capturing the radiation from the sun and converting them into direct current electricity. That power can then be used to power many appliances and devices within your home. Since you don’t have to pay for the sunlight you receive and draw power from, it can be quite an affordable way to power your home.

There are two types of solar energy technology that exist today: passive solar and active solar energy. The primary difference between the two is that active solar technology, as opposed to passive, requires the use of other mechanical devices or conventional sources of energy, like fans and pumps, in order to convert the electricity or heat gleaned from sunlight into usable energy for your home. With passive solar energy, you can just rely on the photovoltaic cells to draw in the solar radiation, requiring no other means of conversion.

Until recently, this type of solar energy technology has been out of reach of the common household, the prohibitive costs and complicated installation making it quite difficult to power your home using solar radiation. However, recent developments in more cost effective solar panel technology, not to mention the many guides and manuals that exist on the Internet that can show you how to make your own solar panel, it’s more feasible than ever to loosen the grip your utilities companies hold on your and your expenses. Not only will you be able to use free energy to power a significant portion of your home, you’ll be using less of the limited resources we have left. With this in mind, it would do you well to investigate your options for getting solar energy in your home.

Cofiring is a direct combustion method by combining coal and biomass to produce energy. Applying this method reduces emissions during the combustion process. This will also reduce the impact of global warming causing by greenhouse gases. Moreover, the combination of coal and biomass will increase 33-37% efficiency of gas turbines. This was disclosed by the National Energy Laboratory.

The advantages of using this method are reducing carbon dioxide and sulfur oxide. Sulphur oxide can cause acid rain, haze, and ozone pollution. Meanwhile, carbon dioxide will cause global warming. Contribution of biomass in this method supports carbon neutral effects meaning that it will re-absorb of carbon dioxide by plants for photosynthesis reaction.

Gasification is a method that converts carbonaceous feedstock into gas fuels using high temperatures. Gasification process produces synthetic gases such as carbon dioxide, carbon monoxide, methane, and hydrogen. Gasification products flow to several stages before it is used for energy production. Heat exchanger and scrubber are used to cool and clean.

Gasification products can be converted into energy by direct combustion such as in gas turbines. Gas is burned in this equipment and produces turbine rotation. Generator is connected to convert into electrical energy. In the system of fuel cells, synthetic gas such as hydrogen and methane are used as fuel cell feedstock. Chemical processes take place in the fuel cell stack and produce electricity. Another conversion process of synthetic gas is Fischer-Tropsch, which is extracted from gas into liquid fuel. (more…)

Eco-friendly technology (also known as sustainable technology) is a means of taking energy and converting it into usable power such as electricity, home heating, and so on… but from renewable resources which do not harm the environment. In other words, utilizing resources such as solar power which is constantly renewable, as opposed to burning off fossil fuels which only gets consumed without the source being renewed, and just adds to the growing carbon footprint we are stomping upon the Earth. What are some of these resources and how can we use them today? Let’s take a look…

One kind of eco-friendly technology, as mentioned above, is solar energy. Since its big boom of popularity in the seventies, the energy output of photovoltaic cells (“solar panels”) has greatly increased, along with the efficiency of its production, from more efficient and less expensive materials. Where it used to cost many thousands of dollars decades ago to cover a small home’s roof with an array of solar panels to (more…)

Choosing solar power is a great way to conserve our planet and help prevent global warming. The source of energy comes straight from the sun and is virtually unlimited. Also the amount of energy that hits the earth’s atmosphere is 1667 Watt per square meter. The amount of energy that hits the earth in 1 hour is greater than our worlds entire energy consumption in 1 year. Pretty amazing right?

This is an article about solar power information and by reading this article you will understand the different types of solar power technologies that exists.

The different types of solar power are:

Concentrated Solar Power or CSP

There are 3 different types of CSP.

Parabolic troughs

These types are curved and concentrate the sunlight into a receiver which then heats a transfer fluid that runs a generator.

Power Tower

This system generates steam which is used to power a generator to produce electricity. This form can produce from 50 to 200 megawatts of energy.

Dish Engine

This is a generator that burns sunlight directly into electricity.

PV or Photovoltaic Systems

Photovoltaic systems convert sunlight into electricity with the help of a semi conductor. The most common used semi conductor for PV systems is Silicon.

These comes in many different shapes and (more…)

A stirling engine is extremely simple heat exchange engine and works by low temperature difference between two metal surfaces. One surface is heated at one end of the engine while other is cooled down on the other end, causing the air to expand near the hot surface (high temperature) and compress near the cold surface (low temperature). This expansion and compression of air within the engine cylinder enables the movement of displacer or piston in upward and downward motion between the two surfaces into a cycle or loop. This efficient heat engine was invented by Robert Stirling in 1816 as an alternative to steam engines at that time and a great contribution in heat engine technology.

Stirling Engine Basics Explained

An ideal model for understanding the basics of a Stirling engine consists of a closed cylinder containing two metal surfaces (aluminium) at top and bottom of the cylinder. A displacer is placed between the two plates which is connected to a flywheel through a wire to transfer mechanical energy during upward motion. When one plate is heated for example; bottom plate, the air near that plate expands and causing the displacer to move upward. On the other hand flywheel is connected to a small piston which takes the mechanical energy from flywheel and push the displacer to aid in downward motion. When displacer reaches top position the small piston moves downward enabling the compress air to fill in the cylinder and push the displacer downward. Making a loop of upward and downward motion of both displacer and piston, resulting in the circular motion of flywheel.

Use in Solar Thermal Technology

In solar thermal technology we use heat energy from sunlight into mechanical energy to drive a generator or turbine to generate electricity. Stirling engine serves exactly the same purpose and they are very powerful solar power generators and produce clean and free renewable energy. (more…)

Many individuals are enthusiastic about the emerging solar energy technology, that provides a clean energy alternative approach to fossil fuel dependence, and the opportunities to obtain free energy are continually increasing. Photovoltaics are panels of material, which have the ability to collect the sun’s radiation and convert it to direct current electricity, and this is how solar energy technology works. With this free power collected from the sun, a number of devices and appliances in (more…)

Currently the technology for alternative energies is rapidly increasing and that means lots of future jobs and opportunity in the market place for those considering a Career in Solar Energy. Today scientists and researchers are finding more efficient and improved ways of capturing our suns energy and using it for power, electricity and heat. In fact, one of the most recent discoveries has been with carbon nano tubes and graphene coatings. Imagine solar cell sheets thinner than a sheet of paper that you could coat the roof of a car, the side of a builing or the wings of an aircraft? The possibilities are truly endless.

At MIT they have discovered ways to (more…)

Did you know that an average homeowner in the US spends over $1000 a year on heating and cooling costs alone which accounts for half of the total energy bill? If you are doing the same wouldn’t you want to curb your heating and cooling costs? Cool roofs and other types of roofs which can save energy are the hot topics today and builders are choosing energy-saving building materials for new homes, home improvement and commercial complexes. There are companies which specialize in certain kinds of roofing while others work on installation of all types of energy saving roofs. Look out for Energy Star Roofs as they meet strict energy efficiency guidelines and help save energy and money.

Energy Efficient Roofs

Cool metal roofs offer a solid and attractive roofing solution as it is available in a variety of colors. They can save up to 40% of energy costs and also reduce air pollution in your neighborhood. Its finish is the key to its energy efficiency. They are made up of recycled material and allow quick installation on to existing asphalt roofs. They will reflect the solar energy and re-emit the absorbed radiation. Also it is extremely durable and is able to withstand extreme weather conditions.

Ballasted roofing systems uses a roof membrane laid on the roof deck. It is held in its place with stones or pavers. It is commonly used in commercial complexes and research has indicated that it is helpful in reducing energy costs.

Green roofs help provide sufficient protection from heat with shade. These roofs have a vegetative layer growing on the roof top which absorbs heat and insulates the building. However these roofs need to be maintained and you will need to trim the plants or even replace the plants which are not growing properly.

It is always recommended that you speak with an experienced roofing contractor before you decide on a roofing solution. They will help you take into account the initial price and the maintenance costs on the long run so you can make a wise, informed choice.

Over the years, there has been a steady stream of new technologies that have improved the quality and energy efficiency of new and replacement windows.? Some have been readily adopted and others have been less well received for a myriad of reasons.

Some were more practical than others.? Some were more cost effective than others.? Still other technologies just haven’t come of age yet, allowing business and home owners the ability to have full vision the effectiveness of the different technologies and the energy savings they provide.? In other words it may be that the majority of the would be users of these new technologies are still waiting for the reviews to start filtering in about how each in its own way has stood the test of time and trial in real world situations.

Let’s face it, new technology is generally always more expensive.? And until the technology has time to prove itself, consumers are reluctant to shell out the extra money especially in hard economic times such as these.? Fortunately many of the “new” technologies are beginning to (more…)