If the cooling tower water is too cold, what may happen to lithium bromide in the absorption unit?

When the cooling tower water is too cold, lithium bromide, which is used as an absorbent in absorption chillers, may crystallize. This is primarily due to the fact that lithium bromide's solubility is affected by temperature; it has a much lower solubility at lower temperatures. If the cooling water is excessively cold, the concentration of lithium bromide can rise beyond its solubility limit, leading to the formation of solid crystals within the absorption unit. This crystallization can disrupt the normal operation of the chiller, impairing efficiency and potentially causing mechanical issues.

Understanding this behavior is crucial for maintaining optimal performance in systems using lithium bromide as it ensures that the absorbent remains in the desired liquid state, facilitating effective heat transfer and absorption processes.