The first system that bottles energy

There could be a future in which electricity is not lost, but is literally bottled and returned on demand. This idea that sounds like science fiction began to become a reality in South Korea, where scientists achieved the country's first liquid air energy storage system capable of producing 10 tons per day. The research was conducted by the Korean Institute of Machines and Materials KIMM, the principle is ingenious, when the grid has surplus energy, the air is cooled to cryogenic temperatures, transforming into liquid, that liquid air is stored in special tanks and when demand increases, it is enough to heat it again. The air expands nearly 700 times its original volume, creating enough pressure to move turbines and generate electricity on demand. The heart of the system are two innovations developed entirely in Korea. A turbo expander that rotates at more than 100,000 revolutions per minute and a cold box equipped with multi-layer insulation and extreme vacuum, capable of maintaining air at freezing temperatures.

It was the first time that the country managed to liquefy and store air with completely national technology, a crucial step to reduce external dependencies, it is not just about simply saving energy, unlike traditional methods such as reversible hydroelectric plants or compressed air caverns that depend on geography and can generate environmental impacts, liquid air storage can be built practically anywhere, from dense cities to industrial hubs. In addition, extreme cold can be used for industrial cooling, while heat wasted in factories can be reused in the process itself, increasing efficiency. This advance places Korea and a global race already contested by countries such as the United Kingdom, China and the United States, but the difference here is that it is a completely national development aligned with the strategic plan of creating a true renewable energy superhighway throughout the Korean territory. It is still early to talk about large-scale application, 10 tons per day seems little compared to national demand, but the proof of concept is already clear, bottling electricity can be one of the cleanest, safest and most flexible solutions for the future of global energy.

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