Energy Saving Mart
Solar energy refers to the solar thermal radiation energy (see three ways of heat energy transmission: radiation), and the main performance is the often said solar light. It is generally used in modern times to generate electricity or to provide energy for water heaters.
Since the birth of life on earth, it has been mainly survived by the heat radiation provided by the sun. Since ancient times, human beings have also been able to dry objects and use them as methods for making food, such as salt and salted fish. With the decreasing of fossil fuels, solar energy has become an important part of human energy use and has been continuously developed. The use of solar energy has two methods: photothermal conversion and photoelectric conversion. Solar power generation is an emerging renewable energy source. Solar energy in a broad sense also includes wind energy, chemical energy, and water energy on the earth.
Technical principle
Solar energy is produced by hydroquinone fusion of hydrogen atoms inside the sun to release huge nuclear energy, which is the radiant energy from the sun.
Most of the energy required by humans comes directly or indirectly from the sun. Plants release oxygen through photosynthesis, absorb carbon dioxide, and convert solar energy into chemical energy for storage in plants. Fossil fuels such as coal, oil and natural gas are also primary sources of energy evolved from ancient times when animals and plants buried underground have undergone a long geological period. The energy contained in the Earth itself usually refers to the energy associated with the heat inside the Earth and the energy associated with the nuclear reaction.
The energy associated with nuclear reactions is nuclear energy. When the structure of the nucleus changes, it can release a lot of energy, called nuclear energy, referred to as nuclear energy, commonly known as atomic energy. It comes from the nuclear fission energy resources in the fission reaction of uranium and thorium stored in the earth's crust, and the nuclear fusion energy resources in the fusion reaction of thorium, thorium and lithium stored in the ocean. These substances release energy when a nuclear reaction occurs. The biggest use of nuclear energy today is power generation. In addition, it can also be used as other types of power sources, heat sources, and the like.
Solar energy is the energy produced by the continuous nuclear fusion process inside the sun. The average solar radiation intensity in Earth's orbit is 1,369 w/m2. The Earth's equator has a circumference of 40,076 kilometers, which makes it possible to calculate that the Earth can reach 173,000 TW. The standard peak intensity at sea level is 1kw/m2, and the annual average radiation intensity at a point on the earth's surface at 24h is 0.20kw/m2, which is equivalent to 102,000TW of energy.
Although the sun's radiation to the Earth's atmosphere is only one-twentieth of its total radiant energy, it is as high as 173,000 TW, which means that the sun's energy per second is equivalent to 5 million tons of coal per second. The energy that hits the Earth is 1.465 × 10 ^ 14 joules. The wind energy, water energy, ocean temperature difference energy, wave energy and biomass energy on the earth are all from the sun; even fossil fuels on the earth (such as coal, oil, natural gas, etc.) are fundamentally stored since ancient times. Solar energy, so the broad range of solar energy is very large, and the narrow solar energy is limited to the direct conversion of solar radiant energy to photothermal, optoelectronic and photochemical.
