Why is lithium bromide considered unsuitable for use in absorption systems?

Lithium bromide is classified as unsuitable for use in absorption systems primarily because it is corrosive. In the context of absorption refrigeration systems, the materials used need to withstand the operating conditions and the chemicals involved without degrading over time. Lithium bromide can lead to corrosion in the metal components of these systems, such as the heat exchanger and piping, which can compromise the integrity and reliability of the system.

Corrosion can result in leaks, reduced efficiency, and ultimately a decrease in the lifespan of the equipment, making it critical to avoid materials that may cause such issues. The other factors, while relevant in some contexts, do not define the primary reason for the unsuitability of lithium bromide in absorption systems in the same way that its corrosive nature does.