Live Off The Grid
Solar technology – The Real Facts
Most electricity plants within the United States and all over world are employing fossil fuels to operate and generate power. Fossil fuel has been applied as an energy source as long as man has found out how to create energy. Fossil fuels have been around for ages and when man started employing these electricity sources no one thought about the consequences. Fossil fuels will be used up and there will probably be a shortage of fossil fuel energy in the near future. This shortage of fossil fuel will have its effect on our daily lives and numerous related industries. These days we see some of these effects already, fossil fuel prices are rising and electrical power is becoming much more expensive. Even though fossil fuels are far more scarce, the requirement for fossil fuels will still be there and will not decrease in the near future. To solve this shortage of fossil fuels we will have to to look for other possibilities for our power demand.
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Fortunately, alternative electricity sources are subject to more interest. For instance, areas with high water falls are experimenting on constructing hydro-electric electrical power plants, that have become very successful. Other locations with higher wind speed will benefit from wind mills that will convert wind energy into electrical energy. In addition, thermal and tidal potential are good alternatives.
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Photo voltaic energy is also simply one of the power sources that is gaining in awareness. Photo voltaic electricity has steadily been growing. These days photo voltaic power is widely applied in countries mainly because the advantages are countless. Our photo voltaic power source, the sunshine, its life span is estimated to be another 4.5 billion years. It’s fair to say that this energy source is almost never-ending.
Rate of Power from the Sun
The sun’s radiation reaches a particular region in space and the Earth’s orbit is within this location is subject to approximately 1,400 watts per square meter. Out of this, photovoltaic cells (also known as solar cells) here on Earth can capture 19 to 56 watts per square meter that is equivalent to .45 to 1.35 kilowatts per hour (kWh) using a day and night average over a year’s period of time.
Therefore, if there were much more areas on Earth that could be covered by using an increased number of solar panels, then solar might be able to produce more energy in the form of electrical power. This is a greater amount of power than is currently available from oil, gas, and other sources of energy combined (assuming 8% photo voltaic cell efficiency).
Conversion of Power from the sun – There are two ways of harnessing solar energy.
The first is the direct solar energy which involves only one conversion into a usable form. For instance:
- Sunlight strikes the pv cell, converting it into electrical energy.
- Sunlight hits the absorber surface of a pv thermal collector, converting into thermal energy which is usually utilized to heat homes during the nippy seasons.
The second may be the indirect solar energy which involves a lot more than 1 conversion to reach a usable form. For instance:
- Plants use photosynthesis to transform solar energy to chemical energy, which could be burned later as fuel to generate power (also known as bio-fuel technology).
- Hydroelectric dams and wind turbines are indirectly supplied by solar energy via its interaction with the Earth’s atmosphere.
Just like any other kinds of electricity resources, pv energy has its ups and downs.
Here are the Pros of: Pv Energy
- Pollution-free.
- Solar powered services can be run with a smaller amount of services or maintenance.
- It can be abundant. As mentioned before, most of the inhabited areas here on Earth can be touched by sunlight.
Here are the Cons: Photo voltaic Electricity
- While it can be abundant, non-tropical locations can sometimes receive a small amount of sunlight. Therefore, electric power that are going to be produced in these areas is at a minimum.
- Available only throughout the daytime hours and thus is not readily available throughout night time.
- Photovoltaic cell technologies generate direct current (DC) electric power which unfortunately needs to be converted to alternating current (AC) electric power used in distribution grids.
Once massive development with the use of photo voltaic electricity is evident, and you should expect that each and every household or industry in the world will now be powered by solar power. It truly is not just a dream, it will likely be a dream come true.
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