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What are the effects of solar radiation on the earth? Classification and application of total solar radiation sensor

by:Rika Sensors     2021-10-15
What are the effects of solar radiation on the earth? Classification and application of total solar radiation sensor
Solar radiation refers to the sun transmitting energy in the form of electromagnetic waves, and the electromagnetic waves and particle streams emitted by the sun into the universe. The energy transferred by solar radiation is called solar radiant energy. Although the solar radiant energy received by the earth is only one-two billionth of the total radiant energy emitted by the sun into space, it is the main source of energy for the movement of the earth’s atmosphere and the main source of the earth’s light and heat energy. The sun is the source of light and heat on the earth, and its every move will have various effects on the earth.

The influence of solar radiation on the geographical environment

Solar radiation directly provides the earth with light and heat resources, and the growth and development of life on earth cannot be separated from the sun. Solar radiant energy also maintains the surface temperature and is the main driving force that promotes the movement of water bodies, atmospheric movement and biological activities on the earth. At the same time, solar radiation is the main source of energy for external forces in geological processes, and various external forces work together to change the shape of the earth's surface. The law of solar radiation decreasing from low latitude to high latitude forms one of the laws of natural zone distribution: the law of latitude zone differentiation.

The impact of solar radiation on human production and life

Solar radiant energy is the main energy source of solar cookers, solar water heaters, and solar power stations used in our daily life and production. Fossil fuels such as coal, oil, and natural gas, which are the main energy sources for industrial production, are solar energy accumulated after biological fixation during the geological historical period. Most of the water energy used by hydropower stations is converted from solar energy; the biological energy that humans cannot live without is also converted from solar energy. Smart agricultural greenhouses are also developed by making full use of the sun's light and heat resources.

In fact, people began to use solar radiation a long time ago. The earliest record can be traced back to the Zhou Dynasty in my country. The Zhou Dynasty invented and used 'Yang SuiWith the development of science and technology, people have gradually realized that the role of solar radiation is more than that, and various sensors have been made to monitor and study solar radiation, among which the total solar radiation sensor is widely used.

As the name implies, the total solar radiation sensor can be used to measure the total radiation value under the sun. At present, the photoelectric total solar radiation sensor and the pyroelectric total solar radiation sensor are commonly used.

The photoelectric total solar radiation sensor adopts the photoelectric principle, and contains high-precision photosensitive elements inside, wide spectrum absorption, high absorption in the full spectrum range, and good stability; at the same time, the light transmittance of the sensor element is as high as 95%. Dust cover, the dust cover adopts special treatment to reduce dust absorption, effectively prevent the interference of environmental factors to internal components, and can more accurately measure the amount of solar radiation.

The pyroelectric total solar radiation transmitter adopts the pyroelectric principle and can be used to measure solar radiation with a spectral range of 0.3~3μm. The sensing element adopts a wire-wound electroplating thermopile, and the sensing surface is a black layer with high absorptivity. Using the thermal effect of radiation, it absorbs solar radiation and converts it into thermoelectromotive force. It also has a temperature compensation function, which can accurately measure solar radiation. The double-layer glass cover above the sensing surface can not only reduce the influence of air convection on the device, but also block the radiation of the cover itself. And add a radiation shield to measure scattered radiation.

The photoelectric and pyroelectric total solar radiation sensor can adopt 485 mode or analog output mode, which can read and convert the current total solar radiation value. The wiring method is simple, the appearance is beautiful, and the installation space is small. It is widely used in solar energy utilization, meteorology, agriculture, aging of building materials and air pollution to measure solar radiation energy.

Over the years, has become very popular as more and more people are trying it out.
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