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Freeze Protection
Pre-Insulated pipe is used to reduce heat loss and prevent freezing on both buried and above ground applications – with or without integral heat tracing. Urecon offers a complete computer assisted engineering service providing such information as: heat loss, time to freeze, fluid outlet temperature, minimum flow rates, tracing wattage required, heat gain, etc., all based on the specific requirements of each project. Contact Urecon for custom calculations.
Time to Freeze and Heat Loss for U.I.P.® Pre-Insulated Pipe
Nominal
Pipe Diameter |
Pipe Ambient -18°C (0°F) |
Pipe Ambient -34°C (-30°F) |
| Time to Freeze HRS. |
Heat Loss |
Time to Freeze HRS. |
Heat Loss |
| mm |
in |
No Insulation |
50 mm (2 in)
U.I.P.® |
(watts/m) |
No Insulation |
50 mm (2 in)
U.I.P.® |
(watts/m) |
| 19 |
0.75 |
1 |
18 |
1.7 |
1 |
9 |
3.1 |
| 25 |
1 |
1 |
40 |
2.0 |
1 |
21 |
3.6 |
| 30 |
1.25 |
1 |
40 |
2.2 |
1 |
21 |
4.1 |
| 40 |
1.5 |
1 |
50 |
2.4 |
1 |
26 |
4.4 |
| 50 |
2 |
1 |
71 |
2.8 |
1 |
38 |
5.1 |
| 75 |
3 |
1 |
121 |
3.6 |
1 |
64 |
6.5 |
| 100 |
4 |
2 |
175 |
4.3 |
1 |
93 |
7.8 |
| 150 |
6 |
3 |
295 |
5.7 |
2 |
156 |
10.4 |
| 200 |
8 |
6 |
413 |
7.0 |
3 |
219 |
12.8 |
| 250 |
10 |
9 |
542 |
8.3 |
5 |
286 |
15.2 |
| 300 |
12 |
13 |
665 |
9.5 |
7 |
352 |
17.5 |
| 350 |
14 |
15 |
744 |
10.3 |
8 |
392 |
18.9 |
| 400 |
16 |
20 |
862 |
11.5 |
10 |
456 |
21.0 |
| 450 |
18 |
28 |
996 |
12.5 |
14 |
514 |
23.5 |
| 500 |
20 |
36 |
1180 |
13.6 |
18 |
609 |
25.6 |
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