John Tahan asked:


Solar energy has many advantages over conventional power energy. That energy is free and the only expense is from recovering it. The cost of recovering the suns energy is of a very small portion and recovered faster compared with conventional energy. The recovering units are not connected to natural gas or power grids, they stand alone with no fees. The supply of solar energy is limitless. It has no emission gases to harm the earth’s atmosphere, it is earth friendly.

Focusing collectors have a movable mirror, called heliostats, is pointed to the sun and can provide incredible heat, a temperature around 4000 degrees C. This degree temperature is used for a solar furnace in industries and research. These solar furnaces are healthy for the environment. The heliostats are focusing the energy to a boiler that turns water into steam. To produce solar electricity, focusing collectors are used.

These collectors are often used in schools and homes to provide heat using water that is heated in pipes. They cannot provide as much heat as the focusing collectors because of their smaller size. Focusing collectors and Photovoltaic cells, are build with thin pieces of semiconductors, they convert radiation from the sun into electricity. The pros and cons of solar energy are often debated, but the debate always seems to favor solar energy over the conventional method. Solar energy has no restriction on supply and demand like fuel, it is free and it doesn’t pollute the air. It is natural and pure and conducive to greater health.

We can work together in many ways in order to get the best of natural and renewable resources. Using solar energy is not only safe, free and helpful but it is inspiring to others. The expenses to put a solar system together are less than the cost of using other resources for heat, including electricity and gas. By using electricity and gas you may have a low cost at the beginning but in the end you will end up paying all the time for years to come. With solar power you may have a small initial investment to pay to convert your home into solar energy but after that you will have no huge electric bills in your mailbox. You may choose to combine the use of electric or gas for a back up heating source from local companies. Solar power has been available for a long time; it is available today and will be available for us for many years to come.



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Darren Chow asked:


How does solar energy work? Sunlight is required to be converted into usable energy form so as to be used by energy-consuming appliances. The ways of converting sun-rays depends on what you need. For example, to dry your clothes you need only direct sunlight. But to power satellites, a storage mechanism along with sunlight is required. And to power cars, their hybrid batteries need to be charged by sun-rays.

The most common method of using solar energy is to store them in photovoltaic cells. This method was first used in U.S. space satellites in 1950s. The cells are made from silicon. When sunlight enters the cells, it causes the electrons to move about. The electrons then move towards the front side of the solar panels. This causes an imbalance of the electrons between the front and back side of the panels. On joining the two surfaces, a conductor is formed, just like a wire, and current begins to flow. The individual solar cells are arranged together in a PV module and the modules are grouped together to form an array. This current is used to charge cells and this energy is used to light lamps, tube lights and also to drive cars now. The current can also be used to run appliances.

Another method of using solar energy is to direct the solar rays to a convergence point using a curved reflector and then make a current flowing system like a photo cell and store energy. This method is now used in India and U.S.

Solar energy is available all around the world and is a free energy source with little or no pollution contribution. Its conversion to usable forms of energy has become possible in recent years and more and more advanced and optimized methods are available to us to harness its full potential.

The sun may rescue us all in the energy crisis now we are facing.

If you are interested in solar energy, I advise you to visit this website to learn more.This site contain information about how to make solar panel and also wind generators at home.

http://www.GreenEnergy4Home.com



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How Solar Energy Works
The Sun is the source of life on our planet. It?s not only the source of light, but also the source of heat and other forms of energy. Even the energy stored in our food, fossil-fuel; all these are actually results of previous ?insolation? (sunshine). Probably that?s why old civilizations used to worship the sun as a god. It?s amazing to know that one hour of solar energy, if fully harnessed, can fulfil a whole year of energy need on earth! Read the rest of this entry »
What is Solar Energy?
Solar energy is transmitted to the earth in portions of energy called photons, which interact with the earth’s atmosphere and surface.  It takes about 8 minutes and 20 seconds for the sun’s energy to reach the earth – this solar energy comes from within the sun itself.

The sun is one big ball of gasses – mostly helium and hydrogen. When the hydrogen atoms combine to form helium, it generates energy. This process is called nuclear fusion. The sun radiates an enormous amount of energy every day, more than what people can use. Read the rest of this entry »