Pro Refrigeration CHILSTAR Series Operation Manual page 20

18 | Pro Refrigeration, Inc
Weight %
Propylene
Glycol
0
5
10
15
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
*Glycol freeze point should be 20 to 25 F. below operating temperature or below coldest
winter ambient conditions. Whichever is coldest.
** Degree Brix is a measure of sugar concentration in a fluid and is important in fermentation
applications. Although there are no sugars in glycol, it will affect the refractive index of
the fluid in a similar fashion.
CHART #1
Volume %
Propylene
Glycol
0
4.8
9.6
14.5
19.4
20.4
21.4
22.4
23.4
24.4
25.4
26.4
27.4
28.4
29.4
30.4
31.4
32.4
33.4
34.4
35.4
36.4
37.4
38.4
39.4
40.4
41.4
42.4
43.4
44.4
45.4
46.4
47.4
48.4
49.4
50.4
shaded area represents recommended Glycol Water Percentage
Freezing Freezing
Point* in Point* in
Fahrenheit Celsius
32
29.1
26.1
22.9
19.2
18.3
17.6
16.6
15.6
14.7
13.7
12.6
11.5
10.4
9.2
7.9
6.6
5.3
3.9
2.4
0.8
-0.8
-2.4
-4.2
-6
-7.8
-9.8
-11.8
-13.9
-16.1
-18.3
-20.7
-23.1
-25.7
-28.3
-31
Degree
Brix**
0.0 0
-1.6 4.8
-3.3 8.4
-5.1 12.9
-7.1 15.4
-7.6 16
-8.0 16.7
-8.6 17.4
-9.1 18.4
-9.6 19
-10.2 19.6
-10.8 20.2
-11.4 20.8
-12.0 21.4
-12.7 22
-13.4 22.7
-14.1 23.6
-14.8 24.4
-15.6 25.3
-16.5 26.1
-17.3 26.9
-18.2 27.5
-19.1 28
-20.1 28.5
-21.1 29.1
-22.1 29.6
-23.2 30.2
-24.4 30.7
-25.5 31.3
-26.7 31.8
-28.0 32.4
-29.3 33
-30.6 33.5
-32.1 34.1
-33.5 34.7
-35.0 35.5