What are the key performance indicators for refrigerant antifreeze?

Key performance indicators:

Freezing point:It determines the ability of antifreeze to prevent freezing in low-temperature environments; its freezing point must be lower than the lowest temperature of the operating environment. Typically, the freezing point of the selected antifreeze is lower than the local temperature. Above 10°C.

Boiling point:Its high boiling point prevents boiling at high temperatures, ensuring the normal operation of the system; typically, the boiling point is required to be Above 100°C, high-quality antifreeze can reach a boiling point of 110°C or even higher.

Corrosiveness:It should exhibit low corrosion to metal materials; otherwise, equipment such as cooling systems may be damaged. Corrosivity is controlled by adding corrosion inhibitors, and qualified antifreeze must pass strict corrosion tests, showing extremely low corrosion rates on common metals like iron, copper, and aluminum.

Thermal stability:It remains chemically stable during high and low temperature cycles and long-term use, without decomposing or polymerizing, thus maintaining stable performance.

Viscosity:Lower viscosity means better fluidity, reduced pump power consumption, and higher heat transfer efficiency; however, viscosity must not be too low, as this would impair lubrication performance. Viscosity should not rise too rapidly at low temperatures either, so as not to disrupt system operation.