How does a thermal switch-off protection work

How do solar panels work?

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Solar panels are devices that absorb solar energy and convert it into heat. This heat can be used, for example, to produce hot water or to heat a building. Such devices are usually found on the roofs of houses - but also more and more often on car ports and commercial properties. Solar collectors have two major advantages: On the one hand protect the environment, as they relieve the regular heating system and reduce the consumption of fossil fuels. On the other hand they save your wallet in the long run of the owner, as this saves fossil fuels and solar energy is available free of charge. The conversion of solar energy into usable thermal energy is called Solar thermal designated. Solar collectors are the executive organ.

Solar panels vs. photovoltaic systems

To many people it is Difference between solar panels and photovoltaic systems unaware. You lump both terms together and think that both devices convert sunlight into electricity. However, this is not the case. Solar collectors absorb the sun's energy and use it to generate the Heating system or water. Solar collectors are therefore also referred to as thermal solar collectors. Initially, they have nothing to do with generating electricity. Photovoltaic systems, on the other hand, use the sun's energy to generate it to convert it into electricity. This conversion of energy is known as photovoltaics. Household appliances, for example, can be operated with the help of the electricity. Or else, the electricity is fed into the community's electricity network for a fee.

This is how solar panels work

The core of a solar collector is the so-called Solar absorber. This converts the solar energy into heat and transfers it to a carrier medium flowing through it. In other words: Cold water runs into the solar collector, is heated there with the help of solar energy, and leaves the solar collector again in a heated state. This water can be used immediately for heating purposes. Solar collectors are mainly insulated by glass covers and thermal insulation surfaces so that the absorbed solar energy is not directly released back into the environment. In Europe, this is how solar panels reach you 60 to 75 percent efficiency. In this country you can - depending on the season - with about Calculate 200 to 1000 watts per square meter. The principle of solar thermal energy works in roughly the same way in all types of solar collectors. However, there are some differences between the different types of solar panels. You can find a corresponding overview here, for example.

The history of solar collectors

Already in the 18th century the naturalist Horace-Bénédict de Saussure invented the first solar panels, which were the forerunners of today's modern solar panels. He was already building the first solar collectors from simple wooden boxes with a black base and a glass cover, and with them he achieved one Temperature of 87 degrees Celsius. This was a remarkable achievement at the time. The French Augustin Mouchot further developed the idea of ​​de Saussure in the middle of the 19th century and combined the solar panels with burning mirrors. He presented this in the form of a solar steam engine at the Paris World Exhibition in 1878. It was able to convert solar energy into electricity.

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