Corrosion data of frozen brine on stainless steel heat exchangers
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Concentration 20℃ 50℃ 80℃ 100℃ Remarks Calcium chloride 10% 0.05~0.5 >1.5 -- Pitting and stress corrosion may occur 20%~30% 0.05~0.5 0.05~0.5 -- 40%~90% 0.05~0.5 0.05~0.5 0.05~0.5 -100% <0.05 <0.05 <0.05 <0.05 50% 0.5~1.5 (-18℃) --- Sodium chloride 10% 0.05~0.5 --- 20%~30% 0.05~0.5 0.05~0.5 0.05~0.5 0.05~0.5 90% >1.5 --- 100% <0.05 --- The units for corrosion rate in the table above are all mm/a. The data provided here are taken from corrosion manuals; please share more information regarding corrosion issues!
Great, very useful, support!
These are the data on saltwater corrosion; generally, when the temperature of cold saltwater is below -5, the degree of corrosion is much lower.
Frozen brine is highly corrosive to metals, so the evaporator must be made of special materials. The following measures can also be taken: 1. Prepare a saline solution using high-purity salt ； 2. Reduce the exposure of the solution to air by using a closed-loop system or covering the salt water tank ； 3. Add a certain amount of corrosion inhibitor to make the solution slightly alkaline, with its pH value maintained between **-8.5. Our refrigeration machine sales staff welcome you to call for discussions. Thank you~
Corrosion-resistant copper can also be used as the heat exchange material for the evaporator