Core principle of compatibility
Mixing different secondary refrigerants may lead to three major risks:
Physical property changes: The freezing point may increase when ethylene glycol and propylene glycol are mixed. 5-8°C, causing the system to freeze in low-temperature environments.
Chemical corrosion intensifies: When calcium chloride brine mixes with alcohols, salting-out reactions occur, producing precipitates that clog pipelines; meanwhile, the increased chloride ion concentration accelerates metal corrosion.
Maintenance costs are rising: the mixture has a complex composition, and troubleshooting requires specialized testing equipment.
Mixed-use risk warning:
Use with caution: Compatibility testing must be performed first (e.g., take Mix 50ml of the medium with the reagent, and observe for 24 hours to check for layering, discoloration, or precipitation.
Manufacturer's recommendation: Before adding biocides and defoamers, be sure to consult the supplier regarding formulation compatibility (some surfactants can damage the corrosion-inhibiting film).、Stability testing(Operate within the target temperature range Observe for 72 hours to check for layering or precipitation.)。