22
Fig. 1 - Recommended ethylene glycol concentrations
Fig. 2 - Ethylene glycol in other concentrations
Fig. 3 - Recommended propylene glycol concentrations
Fig. 4 - Propylene glycol in other concentrations
Fig. 5 - Ethylene glycol pressure drop correcting factor
Fig. 6 - Propylene glycol pressure drop correcting fac-
tors
-10
-8
-6
-4
-2
0
2
4
6
0
5
10
15
20
25
30
35
40
45
0.23
0.24
0.25
0.26
0.27
0.28
OUTPUT LIQUID TEMPERATURE °C
% BY
WEIGHT
GL
YCOL
FA
CT
OR l/s °C/kW IN
RECOMMENDED CONCENTRA
TIONS
GLYCOL FACTOR IN
RECOMMENDED
CONCENTRATIONS
RECOMMENDED
CONCENTRATION
% BY WEIGHT
FREEZING
POINT
GL
YCOL
FA
CT
OR
-10
-8
-6
-4
-2
0
2
4
6
0.23
0%
OUTPUT LIQUID TEMPERATURE °C
0.24
0.25
0.26
0.27
0.28
0.29
0.30
8
10
10%
20%
30%
40%
50%
GL
YCOL
FA
CT
OR
-10
-8
-6
-4
-2
0
2
4
6
0
5
10
15
20
25
30
35
40
45
0.24
0.25
0.26
OUTPUT LIQUID TEMPERATURE °C
% BY
WEIGHT
GL
YCOL
FA
CT
OR l/s °C/kW IN
RECOMMENDED CONCENTRA
TIONS
GLYCOL FACTOR IN
RECOMMENDED
CONCENTRATIONS
RECOMMENDED
CONCENTRATION
% BY WEIGHT
FREEZING
POINT
0.23
-10
-8
-6
-4
-2
0
2
4
6
0.23
0%
OUTPUT LIQUID TEMPERATURE °C
0.24
0.25
0.26
0.27
0.28
0.29
0.30
8
10
10%
20%
30%
40%
50%
GL
YCOL
FA
CT
OR
GL
YCOL
FA
CT
OR
-10
-8
-6
-4
-2
0
2
4
6
LIQUID AVERAGE TEMPERATURE °C
CONCENTRA
TION OF GL
YCOL P/P
8
10%
20%
30%
40%
50%
CORRECTING
FA
CT
OR
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
-10
-8
-6
-4
-2
0
2
4
6
1.0
LIQUID AVERAGE TEMPERATURE °C
CONCENTRA
TION OF GL
YCOL P/P
8
10%
20%
30%
40%
50%
CORRECTING
FA
CT
OR
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8