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The sun radiates enough energy every hour to meet the global energy needs of the year.
Solar energy is a technology used to increase productivity by using solar energy. But we use solar energy to provide only one-tenth of the world's energy demand.
Most people are familiar with solar panels or solar cells used in handheld devices such as spacecraft, rooftops and calculators. The cell is composed of semiconductor materials such as those found in computer chips.
When sunlight hits the cells, electrons are emitted from the atoms. Electrons generate energy when they flow through cells.
Much larger solar power plants use a variety of technologies to concentrate solar energy as a heat source. The heat then boiles the water, drives the steam turbine, generates electricity in much the same way as coal and nuclear power plants, and powers thousands of people.
One approach uses a long valley of U-shaped mirrors that concentrate sunlight into an oil pipe that passes through the center. The hot oil then generates water by boiling water.
Another approach uses a moving mirror to focus the sunlight on the collector tower where the receiver is installed. The molten salt flowing through the receiver is heated to activate the generator.
Solar energy is a pollution-free fuel source, pollution, and often no noise. This technology is very versatile. Solar cells, for example, generate energy in unobstructed places like satellites in Earth's orbit and nowhere homes, just as easily as powering big city buildings and future vehicles. can.
However, solar energy has drawbacks and will not function at night without a storage device such as a battery. Cloudy weather can also reduce the reliability of the technology during the day. Solar technology is also expensive and requires a lot of space to collect enough solar energy to serve many people.
Despite these shortcomings, however, solar energy use has soared about 20% over the last 15 years. This is due to the rapid drop in technology prices and increased efficiency.
Japan, Germany, and the United States are currently major markets for solar cells. Thanks to tax incentives, solar power can often be provided at your own expense in 5 to 10 years.
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