Submarine heat storage technology uses the melting heat generated by the phase changes between the energy storage medium liquid phase and the solid phase to store the thermal energy to store the thermal energy. The actual application of the latent thermal storage medium has sodium sodium sulfate (chemical formula is NA2S04 · 10H20), sodium sodium sulfate (chemical formula is NA2S04 · 5H20), and hexagonal calcium chloride (chemical formula is CACL2 · 6H20). The technology is characterized by energy storage at low temperature. It has high energy storage density and can take out heat at a certain phase change temperature. The storage device is also more complicated, and technical difficulty

Chemical energy storage technology uses energy to decompose chemicals and stores the energy separately. When the decomposition material reelection, the storage thermal energy can be released. It can be achieved with reversible decomposition reactions, organic reversal reactions, and hydrogenated chemical reactions. Among them, hydrochemical chemical reaction technology is the most developed potential. In -depth research at home and abroad is undergoing in -depth research. It will provide a good way to solve the problem of energy shortage.