Daimler turned a coal-fired power plant into an energy storage facility. Free Technical Library News

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Daimler turns coal-fired power plant into energy storage

06.07.2018

Mercedes-Benz Energy, a subsidiary of the German automaker Daimler, has teamed up with partners to create a massive energy storage facility at the Elferlingsen coal-fired power plant using 1920 battery modules for electric vehicles.

The coal-fired power plant, built in 1912, was recently closed. The 8,96 MW/9,8 MWh system running in her building uses a total of 1920 batteries. These batteries would be enough to power 600 Daimler Smart electric vehicles.

"Large energy storage is a symbol of the transformation in the way energy is stored and used, from supplying electricity to the grid from fossil energy sources, to a sustainable extension of the electric vehicle value chain, which has reduced CO2 emissions," commented the automaker's launch of the storage facility.

The constructed storage facility will be used to maintain the balance of the German energy system. The partners of Mercedes-Benz Energy in this project were ENERGIE and The Mobility House. It follows several other large-scale energy storage projects undertaken by Mercedes-Benz Energy. For example, last year the company and partners built a larger energy storage facility in Herrenhausen. Its capacity is 17,4 MWh.

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microbe restorer 04.10.2003

Acid rain and weathering gradually destroy the stone architecture of antiquity, especially buildings and monuments made of porous and relatively fragile carbonate rocks - limestone, marble and dolomite. As a result of chemical processes, less durable and more easily soluble calcium salts are obtained, the stone is gradually destroyed.

Now Spanish scientists have found a strain of bacteria capable of "restoring" architectural monuments. The idea to populate the surface of the stone with microorganisms that take carbon dioxide from the air and replace unstable calcium salts with carbonate arose quite a long time ago and has been tested in practice. But it turned out that carbonate is deposited in the pores of the stone, clogs them and prevents the evaporation of rain moisture, only accelerating the destruction.

Geologists from the University of Granada report positive results from testing the widespread soil bacterium Myxococcus xanthus on limestone samples from which many of Spain's historical monuments are made.

It turned out that the calcium carbonate crystals produced by the bacterium are firmly bound to the material of the stone itself and do not clog the pores, but line them from the inside. Bacterial calcium carbonate is chemically identical to limestone calcite, but the organic molecules added to it by the bacterium make the new mineral even stronger than the original rock.

Now, with the help of bacteria, they are trying to restore sections of stone carving on the building of the Alhambra, a palace of the XNUMXth century.

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