What is the lowest recommended temperature for utilizing calcium chloride brine?

The lowest recommended temperature for utilizing calcium chloride brine is -41.8°F. Calcium chloride is often used as a refrigerant and a de-icing solution due to its ability to lower the freezing point of water significantly. This notably expands its application range, particularly in refrigeration systems.

At -41.8°F, calcium chloride brine maintains effective thermal conductivity and remains in a liquid state, making it suitable for use in chilling systems designed to operate in low-temperature environments. The freezing point of calcium chloride brine is much lower than that of plain water, enabling it to be an effective option for refrigeration applications where other materials might freeze and become ineffective.

In contrast, the other temperature options either fall above or below the effective operational range for calcium chloride brine. Understanding the chemistry and behavior of calcium chloride in various temperatures is crucial for ensuring optimal performance in refrigeration systems. Thus, -41.8°F is recognized as the threshold for maximum effective use of calcium chloride brine in cooling applications.