Power to supply electricity to a city with solar energy storage
MIT researchers said that the design called “Sun in the Box“ could store the surplus of solar and wind energy. Then, it can be presented in terms of demand for the power distribution network.
A new scheme is proposed to store the surplus of solar energy in large, liquid silicon tanks and convert it into electricity if required. The battery supplies the energy needed by small cities.
This process helps cities use the stored electricity without considering the sun or wind blowing time.
The new design stores heat into large tanks of molten silicon, and then convert sluminous metal into electricity if necessary. Researchers estimate that a reserve system helps provide a small town electricity with 100 thousand homes.
It costs less than lithium – ion batteries. The researchers presented the project within spiration from concentrated solar units.
Typically, concentrated solar cells store the heat of the star in large tanks containing liquid salt, whose temperature is over a thousand degrees Fahrenheit.If necessary, the molten salt enters a heat exchanger that converts heat in to steam. In the next step, the steam turbine converts the steam into electricity.
In the new study, researchers were looking for another medium except salt and therefore chose silicon. It is the most abundant metal on earth that can with stand temperatures above 4 thousand degrees Celsius.