CAUTION
To prevent undetected dilution or loss of glycol, do not use an automatic makeup water system.
Note: Glycol concentration impacts the heat transfer. Chiller performance can be negatively
affected by a higher concentration of glycol.
Table 3: Ethylene glycol concentration corresponding freeze point *
Density (G/M
3
) at 20ºC
Concentration (%) by
weight
Concentration (%) by
volume
Freeze point ºF (ºC)
1 0 0 32 (0)
1.001 2 1.8 30.2 (-1)
1.002 3 2.7 30.2 (-1)
1.003 4 3.6 30.2 (-1)
1.004 5 4.4 28.4 (-2)
1.006 6 5.4 28.4 (-2)
1.007 7 6.3 28.4 (-2)
1.008 8 7.2 26.6 (-3)
1.01 9 8.2 26.6 (-3)
1.011 10 8.9 26.6 (-3)
1.013 12 10.9 24.8 (-4)
1.016 14 12.8 23 (-5)
1.019 16 14.6 21.2 (-6)
1.021 18 16.5 19.4 (-7)
1.024 20 18.1 17.6 (-8)
1.03 24 22 14 (-10)
1.035 28 25.8 8.6 (-13)
1.041 32 29.6 3.2 (-16)
1.046 36 33.5 -4 (-20)
1.051 40 37.5 -11.2 (-24)
1.057 44 41.5 -18.4 (-28)
1.062 48 45.5 -27.4 (-33)
1.067 52 49.6 -38.2 (-39)
1.072 56 53.7 -49 (-45)
1.077 60 57.8 -59.8 (-51)
Note: *The values in the table are for reference. Ask the vendor for information on
concentration versus freezing point for their product. Use that information to determine the
glycol concentration.
YVAM with OptiView Control Center14
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