The sun radiates enormous amounts of energy every second. The solar energy that we receive on earth is only a fraction of this energy, but it is more than enough to fulfill our energy requirements.
Because of the shape of the earth the amount of solar energy received varies at different latitudes. Regions near the south and north poles receive much less solar energy than the regions near the equator.
Solar energy is renewable, which means that we can use it again and again. A sun ray reaches the earth in 8 minutes, and this process will go on continously while the sun is present.
Solar technology as we know it, started to devlop in the 1800s. At present, a variety of solar technologies are available for use. These include:
Solar Space Heating
Space heating systems provide space heating for buildings. A solar ventilation system is capable of preheating the air which saves both money and energy. A typical system contains solar collectors that work along with a pump, a heat exchanger, and/or one or more large storage tanks.
Solar Space Cooling
Solar collectors can also be used to cool a building. Solar absorption coolers are used for this purpose. In some respects the technology used in them is similar to air conditioners.
Photovoltaic Cells
PV cells are commonly called solar cells. They capture the sun’s energy and convert it into DC electricity. This can be used in this form or be converted into AC, which is similar to the electricity that we get from the power grid. Photovoltaic system can be connected to the grid or used as a stand alone system.
Stand alone systems are widely used for solar water heating and they are particularly useful in remote areas where power grids are not present. Batteries can be used to store energy for use at night or in cloudy conditions.
Related posts:
- Solar Power Efficiency and Solar Energy For Homes Solar power efficiency has been a problem in the development...
- Solar Energy Heating in Solar Energy Homes Solar Energy can provide 2 enormous benefits to those with...
- Solar Energy Advantages and Disadvantages-Home Solar Power Systems Solar energy can provide significant reductions in your home energy...
- Solar Energy for Homes-A Solar Energy House Anyone? Over the years, we have become accustomed to using the...
- A Solar Energy House-Solar Power Electricity in the Home If you want to reduce your energy costs and your...
Information on Solar Energy-Is Solar Energy For You? | The Green Alternative Energy Stuff // Aug 31, 2010 at 2:32 am
[...] Information on solar energy is increasing dramatically with the availability of many studies,guides,photographs etc. on the internet. There are some excellent guides on how the ordinary homeowner can build his own solar panels and reduce his energy costs..and his carbon footprint. [...]
Pros and Cons of Solar Energy-10 Key Factors About Solar Power | Best Energy Sources // Sep 25, 2010 at 3:35 pm
[...] and Cons of Solar Energy-10 Key Factors About Solar Power Pros and Cons of solar energy are numerous. But it is readily apparent that the positives far outweigh the negatives for using [...]