Researchers propose to create a gravitational energy store.
The whole world is increasingly trying to switch to renewable energy sources in order to protect the environment and be independent of the hydrocarbon supply from aggressive countries like Russia. However, TechExplore writes that “green energy” sources are extremely unstable and require special care in conserving the energy received.
Batteries store energy, but people don’t have access to lighting, working tools, etc. It is consumed immediately when needed. Scientists decided to find a way to store energy for a long time. They proposed a new method called “Underground Gravitational Energy Storage” (UGE). It involves using old, inoperative mines as giant batteries.
Designed by engineers, the PGHE will be able to generate electricity through regenerative braking when the sand is lowered. For the issuance of PGCE, the following are required: one engine-generator, two storage facilities, special equipment for mines. The deeper and wider the shaft, the more energy can be drawn from the installation, and the larger the shaft, the higher the energy density.
According to scientists, one of the advantages of this method of energy storage is that sand can store energy for years and practically prevent self-discharge. Another plus is the low investment costs for UHEC, ranging from $1 to $10 per kWh, and the technology itself has a global potential of 7 to 70 TWh.
In addition, there are several million kings abandoned on Earth, which creates a social problem. When a mine stops mining, people are often unemployed. Reusing mines as energy stores can solve this problem.
So far, the scientists’ proposal is based on theoretical calculations, but they say it’s time to rethink the world energy system based on innovative solutions using available resources to decarbonize the economy.
We have already reported that a special “water” battery was created for electric cars, which is not afraid of moisture.
Source: Focus
Ashley Fitzgerald is an accomplished journalist in the field of technology. She currently works as a writer at 24 news breaker. With a deep understanding of the latest technology developments, Ashley’s writing provides readers with insightful analysis and unique perspectives on the industry.