Solar energy is a renewable energy source.
For more than 5,000 years, it has played a huge role in production and human life. The uses of solar energy have evolved significantly over time, from heating to powering satellites in space. However, there is still a lack of energy-efficient and low-cost solar power generation equipment in homes and various buildings.
The operation of a solar panel is very simple, it is a panel made up of millions of solar cells. When the sun shines on these panels, absorbing sunlight, the energy of solar radiation is directly or indirectly converted into electrical energy by photoelectric effect or photochemical effect. This energy can power homes and is very affordable.
The role of solar energy
1. Photothermal use
Collect energyof solar radiation and convert it by interaction with matter Heat energy can be used. Currently, the most commonly used solar energy harvesting devices include flat plate collectors, evacuated tube collectors, ceramic solar collectors and focused collectors.
2. Use of power generation
Solar power generation is widely used in solar street lights, solar insecticide lamps, portable solar systems, mobile solar power supplies, solar application products, communication energy. Supplies, solar lights, solar construction and other fields.
3. Photochemical use
This is a photochemical conversion method that uses energy from solar radiation to directly decompose water to produce hydrogen. This includes photosynthesis, photoelectrochemistry, photosensitive chemistryand photodecomposition reactions. Photochemical conversion is the process of converting light radiation into chemical energy due to chemical reactions. Its basic forms include plant photosynthesis and photochemical reactions that use chemical changes in substances to store solar energy.
The above content refers to Baidu Encyclopedia - Solar Energy
Renewable energy includes solar energy, hydraulic energy, wind energy, biomass energy, wave energy. energy and tidal energy, ocean temperature difference energy, geothermal energy, etc.
Energy can be divided into two types: renewable energy and non-renewable energy. Renewable energy includes solar energy, hydropower, wind energy, biomass energy, wave energy, tidal energy, renewable energyof ocean temperature difference, geothermal energy, etc. They can be recycled in nature. It is an inexhaustible source of energy that will automatically regenerate without human intervention. It is a kind of energy source compared to non-renewable energy sources which can be exhausted.
Before the development of coal in the mid-19th century, all energy used was renewable. In addition to nuclear energy, tidal energy and geothermal energy, the basic energy for human activities comes mainly from sunlight. Fossil fuels such as bioenergy and coal, oil and natural gas primarily absorb and store solar energy through plant photosynthesis. Others, like wind, water, ocean currents, etc., are also the result of the earth's air and water being heated by sunlight.
Human use ofThe principlesipal reasons for producing renewable energy
1. Advances in science and technology are making this type of energy more “easy to use.”
2. Fossil energy is limited. Not only will its price increase day by day, but it will eventually run out.
3. Some renewable energy sources (such as wind power, hydropower, solar power) do not emit greenhouse gases (such as carbon dioxide) and therefore do not increase the risk of greenhouse effect.
4. To improve security of energy supply, reduce dependence on imported fossil fuels and meet the demand for sustainable energy.
The above content refers to Baidu-Renewable Energy Encyclopedia