Below are the water quality requirements for external and internal circulation system of Antspace (hydro cooling container). Please do change cooling liquid regularly as required to avoid abnormal system operation caused by water quality deterioration.
>Water quality requirements for internal circulation coolant:
| Table 1 Recommended standards for coolant | |||
| Items | Physical and chemical indicators |
Recommended reference standards for testing |
|
| Color | Significant color | Visual inspection | |
| Appearance | No peculiar smell, No precipitation, No suspended matter |
Visual inspection | |
| Freezing point | -45℃ (low temperature) | ||
| Boiling point | 108℃ (low temperature) | ||
| PH value | 7-9 | ||
| Reserve alkalinity | ≥ 4 ml (Organic formula) | ||
| ≥ 9 ml (Inorganic formula) | |||
| Total hardness | < 120 mg/l | ||
| Content of main elements |
B | <20 mg/kg | |
| Si | <20 mg/kg | ||
| P | <20 mg/kg | ||
| Mo | <20 mg/kg | ||
| Ca | <20 mg/kg | ||
| Al3+ | <50 mg/kg | ||
| Fe2+ | <50 mg/kg | ||
| Cu2+ | <50 mg/kg | ||
>Water quality requirements for deionized water:
| Table 2 Recommended standards for deionized water | |||
| Items | Deionized water | Reference standard | |
| PH | 8.5-9.5 | Intel 632983 | |
| Sulfide | <1 ppm | TC9.9/Intel 632983 | |
| Sulfate | <10 ppm | TC9.9/Intel 632983 | |
| Chloride | <5ppm | TC9.9/Intel 632983 | |
| Bacteria | <100 CFUs/ml | TC9.9/Intel 632983 | |
| Total Hardness (as CaCO3) |
<20ppm | TC9.9/Intel 632983 | |
| Conductivity | <20us/cm （reference value） |
TC9.9 | High conductivity is not necessarily unacceptable, such as 1000US / cm, because corrosion inhibitors and fungicides will increase water conductivity. It is necessary to find out the reason for the sharp increase of conductivity trend during circuit operation. |
| Residual solids after evaporation |
50ppm | TC9.9/Intel 632983 | |
| Turbidity | <20 NTU | TC9.9/Intel 632983 | |
| Iron | 0.1ppm | Industry standard | |
| Copper | 10ppb | Industry standard | |
| Corrosion rate of carbon steel |
3mpy （0.075mm/a） |
GB/T 50050-2017 | |
| Corrosion rate of copper or stainless steel |
0.2mpy （0.005mm/a） |
GB/T 50050-2017 | |
| Frequency of water quality detection |
Once a week in the first month, once a month in the next six months, and adjusted to once a quarter or once a half a year according to the situation after six months |
It is necessary to record data every time to analyze the change trend |
|
>Water quality requirements for spray water：
| Table 3 Recommended standards for spray water | |||||
| Items |
Reference value |
Inclination | |||
| Corrosion | Scaling | ||||
|
Benchmark term |
PH value(25℃) | 6.5～8.0 | ⚪ | ⚪ | |
| Conductivity(25℃) | μS/cm | <800 | ⚪ | ⚪ | |
| Cl- | mg(Cl-)/L | <200 | ⚪ | ||
| SO2- | mg(SO2-)/L | <200 | ⚪ | ||
| Acid consumption(pH=4.8) |
mg(CaCO2)/L | <100 | ⚪ | ||
| Total hardness | mg(CaCO3)/L | <200 | ⚪ | ||
|
Reference term |
Fe | mg(Fe)/L | <1.0 | ⚪ | |
| S2- | mg(S2-)/L | none | ⚪ | ||
| NH+ | mg(NH+)/L | <1.0 | ⚪ | ||
| SiO2 | mg(SiO2)/L | <50 | ⚪ | ||
| Note: ⚪Indicate factors related to corrosion or scaling tendency | |||||
Should you have any inquiries, feel free to contact us for assistance.
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