How to measure Lithium bromide (LiBr) concentration?

Absorption refrigeration systems utilize Lithium bromide (LiBr) as an absorbent for water vapor, creating a refrigeration effect without the use of harmful refrigerants that contribute to ozone depletion or global warming. The concentration of LiBr directly affects the absorption capacity and crystallization risk, making precise measurement essential for optimal system performance. Traditional methods such as density measurement using hydrometers or pycnometers, while still in use, lack the precision required for modern high-efficiency systems. Newer approaches including electrical conductivity measurement, refractive index analysis, and ultrasonic velocity determination aim to provide more precise readings with minimal system disruption.

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