Lithium bromide is a colorless crystalline powder inorganic compound with core characteristics such as strong water absorption, excellent phase transition properties, and stable chemical properties. It is widely used in refrigeration, air conditioning, chemical engineering, and other fields. The specific characteristics are as follows:
1. Extremely strong water absorption and moisture absorption refrigeration characteristics
       Lithium bromide is an efficient desiccant that can strongly absorb moisture from the air at room temperature, and has a large hygroscopic capacity. After absorbing moisture, it forms a lithium bromide aqueous solution.
       The boiling point of its aqueous solution will significantly decrease in a vacuum environment, and water can evaporate at low temperatures, absorbing a large amount of heat to achieve refrigeration. This feature is the core working principle of lithium bromide absorption refrigeration machine, which does not require a compressor, only requires thermal energy to drive, and is suitable for waste heat and waste heat utilization scenarios.
2. The physicochemical properties of aqueous solutions are suitable for industrial applications
       Lithium bromide aqueous solution has a high specific heat capacity and good thermal conductivity, and can efficiently transfer heat in refrigeration systems; And it has low viscosity, good fluidity, and is easy to circulate in pipelines and heat exchangers.
The aqueous solution is highly alkaline and has strong corrosiveness to ordinary carbon steel. Therefore, the core components of lithium bromide refrigerators need to use corrosion-resistant materials such as copper alloys and stainless steel, or add corrosion inhibitors (such as lithium chromate and lithium molybdate) to the solution.
3. Stable chemical properties and high safety
       Lithium bromide itself is non flammable, non explosive, chemically stable, and does not decompose at room temperature and pressure. It has high safety during storage and transportation.
       It has low toxicity and minimal irritation to human skin and respiratory tract, but long-term exposure to high concentration lithium bromide aqueous solution may still cause skin dryness and peeling, requiring proper protection.
4. Special phase transition and dissolution characteristics
       The melting point of pure lithium bromide is about 547 ℃, with a boiling point as high as 1265 ℃. It has good high-temperature stability and can be used in high-temperature molten salt systems.
       Lithium bromide is highly soluble in water, and its solubility increases with temperature. The dissolution process releases heat, which can be utilized in certain chemical processes.
5. Outstanding environmental friendliness, suitable for the needs of green industry
The lithium bromide refrigeration system uses water as the refrigerant and lithium bromide solution as the absorbent, without ozone depleting substances such as Freon, which meets environmental requirements and is a green solution to replace traditional compression refrigeration. It is widely used in large-scale central air conditioning and industrial waste heat refrigeration projects.

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