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IMPORTANCE OF THE SOLAR ENERGY

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Now we all know a little more about the solar energy, so let's summarize its advantages in order to be aware of the importance of this type of energy: It's a renewable energy It's an endless resource It takes care of the environment It doesn't emit greenhouse gases It helps us to control the global warming Its cost is lower than the cost of the big nuclear power plants These are only a few examples of all the advantages that the solar energy has. Do you know any more? Let us know in the comments!
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PHOTOVOLTAIC SOLAR ENERGY

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Hi again kids! This time we are going to talk about another type of solar energy... Photovoltaic solar energy! Let's see: It consists in the direct transformation of the solar radiation into electricity. In this case, the solar radiation is caught thanks to the solar panels. They are composed of photovoltaic cells connected between them. In addition, each solar panel is also connected to another one, like the cells. Important : these installations are so big, so they cause environmental impact. Advantages: They don't pollute the atmosphere. They don't cost too much money now. Their efficiency is so high.
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THERMAL SOLAR ENERGY

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This type of energy works using the solar heat. Important : the energy that comes from the sun has to be caught and transferred to another medium, like water or air. Thermal solar energy installation It has some basic elements: Collector : it collects solar radiation and heats the water that travels through a closed circuit. Exchanger : it heats the water that we consume thanks to the heat caught before. Accumulator : it retains the hot water. Circulation pumps : they pump the water from the collector and the accumulator. However, this type of installations needs a support system because the sun doesn't shine all day! Advantages: Its installations work more than 25 years. Its maintenance is simple. They help us to safeguard the planet.
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