BITMAIN AntSpace HK3 - Page 83

ANTSPACE HK3 Water cooling container & Dry-Wet Tower Product Manual
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Table 9-1 Recommended standards for coolant testing
Items
Reference standards
Remarks
Color
Significant color
Visual inspection
Exterior
No odor, sediment, or suspended solids
Visual inspection
Freezing point
＜Local minimum freezing temperature
Boiling point
108℃ (low temperature type)）
PH value
7-9
Reserve alkalinity
≥4ml (organic formula)
≥9ml (including inorganic formula)
Total hardness
<120 mg/l
Main element content
B
<20mg/kg
Si
<20mg/kg
P
<20mg/kg
Mo
<20mg/kg
Ca
<20mg/kg
Al3+
<50mg/L
Fe2+
<50mg/L
Cu2+
<50mg/L
Table 9-2 Glycol Refrigerant Concentration vs. Freezing and Boiling Points
Glycol concentration
Freezing point ℃
Mass concentration %
Volume
concentration %
0
0.0
0.0
5
4.4
-1.4
10
8.9
-3.2
15
13.6
-5.4
20
18.1
-7.8
25
22.9
-10.7
30
27.7
-14.1
35
32.6
-17.9
40
37.5
-22.3
45
42.5
-27.5
50
47.6
-33.8
55
52.7
-41.1
60
57.8
-48.3