Energy Storage Molten Salt

A chemical reaction heat conduction medium formed by the melting of salts. The molten salt is a molten body composed of metal cations and non-metal anions. Molten salts are salts that are solid at standard temperature and atmospheric pressure, but exist in the liquid phase after the temperature rises.

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Molten salts (thermally conductive molten salts, thermal media) usually refer to molten inorganic salts as molten salts. It is a chemical reaction heat conduction medium formed by the melting of salts. The molten salt is a molten body composed of metal cations and non-metal anions. Molten salts are salts that are solid at standard temperature and atmospheric pressure, but exist in the liquid phase after the temperature rises.

1. Name: molten salt for energy storage

ProjectMelting point ℃	Melting point ℃	Decomposition temperature ℃	Viscosity mPa·s	Specific heat J/(g·K)	Thermal conductivity W/(m·K)	Use temperature ℃	Exterior
Binary energy storage molten salt	210-230	575	2.95-3.26	1.3-1.5	0.3-0.5	230-560	Yellowish crystals or particles
Ternary energy storage molten salt	141-145	450	2.95-3.12	1.3-1.5	0.3-0.5	250-400	Yellowish crystals or particles

2. Instructions for use

Put the heat conductive molten salt into the tank to directly heat and melt, or add a small amount of water to the heat conductive molten salt and heat to melt it. After melting to a sufficient viscosity, it can be circulated by a circulation pump, and then sent to a heat-carrying furnace to gradually increase the temperature to reach the target temperature.

3. Matters needing attention

① Molten salt should be kept clean and not in contact with organic substances such as charcoal, rosin or reducing substances, so as not to cause violent chemical reactions.

② When the temperature rise begins, strictly control the temperature rise rate, and try to avoid rapid cooling and rapid heating during system operation.

③ In circulation heating, the flow rate is constant, and the membrane temperature cannot be exceeded.

④ In high-temperature use, mixing of water and organic substances is strictly prohibited.

⑤ When the commonly used molten salt exceeds 550°C, the molten salt becomes unstable, reacts, emits gas, and the melting point of the molten salt rises, causing the molten salt to deteriorate.

⑥ When there are more precipitates in the molten salt of the heat carrier, the molten salt should be replaced.

⑦ Before stopping, the molten salt must be poured back into the molten salt storage tank before entering the parking procedure.