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Chillers
DeltaChill™ Air Cooled and FreeCool
53
Chiller Technical Manual 7267818 V1.13.0_01_2018
Glycol is recommended when a supply water temperature of +5°C or below is required or when static water can be
exposed to freezing temperatures (lower than 3°C Ambient). This is specified further in the environmental consideration
section at the front of this document.
Glycol Percentage / Freezing Point
Temperature °C
0% / °C
20% / -7.1°C
25% / -9.6°C
30% / -12.7°C
35% / -16.4°C
40% / -21.1°C
0
4.21
3.93
3.86
3.79
3.72
3.64
5
4.20
3.94
3.87
3.81
3.73
3.65
10
4.19
3.95
3.89
3.82
3.75
3.67
15
4.19
3.96
3.90
3.83
3.76
3.69
20
4.18
3.97
3.91
3.85
3.78
3.70
25
4.18
3.98
3.92
3.86
3.79
3.72
30
4.18
3.99
3.94
3.88
3.81
3.74
35
4.18
4.01
3.95
3.89
3.82
3.75
40
4.18
4.02
3.96
3.90
3.84
3.77
45
4.18
4.03
3.97
3.92
3.85
3.78
Glycol Percentage / Freezing Point
Temperature °C
0% / °C
20% / -7.1°C
25% / -9.6°C
30% / -12.7°C 35% / -16.4°C
40% / -21.1°C
0
999.8
1025.8
1031.0
1036.2
1040.7
1045.1
5
999.9
1024.3
1029.4
1034.5
1038.8
1043.1
10
999.7
1022.7
1027.6
1032.6
1036.8
1040.9
15
999.0
1020.9
1025.7
1030.5
1034.6
1038.7
20
998.2
1019.0
1023.7
1028.4
1032.3
1036.2
25
997.0
1017.0
1021.5
1026.1
1029.9
1033.7
30
995.6
1014.8
1019.2
1023.6
1027.3
1031.0
35
994.0
1012.6
1016.8
1021.1
1024.7
1028.2
40
992.2
1010.2
1014.3
1018.4
1021.9
1025.3
45
990.2
1007.6
1011.6
1015.6
1018.9
1022.2
Propylene Glycol Specific Heat
Propylene Glycol Density
Glycol
Design Data
Kw =ρ x m x Cp x ∆t
Where
kW = Cooling Performance (KW)
ρ =
Density of cooling medium (kg/m³)
m = mass flow of cooling media (kg/s)
Cp = Specific heat Capacity (kj/kg K)
∆t = Temperature difference between Inlet and Outlet (K)
Glycol in System /
Freezing Point ºC
10% / -2°C
20% / -6°C
30% / -12°C
40% / -20°C
Cooling Duty
Catalogue
Data x by:
0.97
0.95
0.91
0.88
Input Power
0.99
0.98
0.96
0.95
Water Flow
0.98
0.97
0.95
0.95
Pressure Drop
1.08
1.17
1.31
1.45
Correction Factors
