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The first solar station on molten salt, working around the clock

As you know, solar energy is already cheaper to produce than nuclear . But she still has a number of problems, and one of them is the “intermittent” nature of the development. In other words, the solar station does no good at night. But this defect can also be corrected.

A month ago, the first in the world station on solar energy concentration (concentrated solar power, CSP), which operates on molten salt around the clock, was put into operation near Syracuse (Italy).

Here, instead of photocells, parabolic mirrors are used, focused on pipes with salt, which is capable of heating to 550 ° C. The molten salt enters the heat storage, boils water, and steam turns the turbines.

The idea of ​​such a system belongs to Archimedes, who with the help of parabolic mirrors allegedly set fire to Roman ships during the siege of Syracuse (214-212 BC). Not surprisingly, the modern station near Syracuse was called Archimede.

In the United States and Spain, there are already several power stations of this type, but some of them use oil as a heat accumulator, while others (salt) do not work at night. Station Archimede in Italy - the first, which works on salt around the clock.

The construction of the five-megawatt station cost 60 million euros. The mirrors occupy an area of ​​3 hectares, the length of the pipes with salt is 5400 m.

Source: https://habr.com/ru/post/102753/

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