PREMANT district heating pipe
Heat loss
Insulation thickness 3
Heat losses q [W/m] for one pipe
PRE 6.212
U-value
W/mK
0.1019
0.1186
0.1294
0.1442
0.1562
0.1754
0.1857
0.1930
0.2162
0.2388
0.2505
0.2514
0.2774
0.2676
0.3044
0.3435
0.2704
0.3105
0.3494
0.3895
PREMANT
26.9 -
33.7 -
42.4 -
48.3 -
60.3 -
76.1 -
88.9 -
Average temperature between VL/RL T
B
[°C]
125
125
140
140
160
180
200
250
280
315
400
500
560
630
670
710
900
50 °C
4.1
4.7
5.2
5.8
6.2
7.0
7.4
7.7
8.6
9.6
10.0
10.1
11.1
10.7
12.2
13.7
10.8
12.4
14.0
15.6
60 °C
5.1
5.9
6.5
7.2
7.8
8.8
9.3
9.7
10.8
11.9
12.5
12.6
13.9
13.4
15.2
17.2
13.5
15.5
17.5
19.5
70 °C
6.1
7.1
7.8
8.7
9.4
10.5
11.1
11.6
13.0
14.3
15.0
15.1
16.6
16.1
18.3
20.6
16.2
18.6
21.0
23.4
80 °C
7.1
8.3
9.1
10.1
10.9
12.3
13.0
13.5
15.1
16.7
17.5
17.6
19.4
18.7
21.3
24.0
18.9
21.7
24.5
27.3
90 °C
8.2
9.5
10.3
11.5
12.5
14.0
14.9
15.4
17.3
19.1
20.0
20.1
22.2
21.4
24.3
27.5
21.6
24.8
28.0
31.2
100 °C
9.2
10.7
11.6
13.0
14.1
15.8
16.7
17.4
19.5
21.5
22.5
22.6
25.0
24.1
27.4
30.9
24.3
27.9
31.4
35.1
110 °C
10.2
11.9
12.9
14.4
15.6
17.5
18.6
19.3
21.6
23.9
25.0
25.1
27.7
26.8
30.4
34.4
27.0
31.1
34.9
39.0
120 °C
11.2
13.0
14.2
15.9
17.2
19.3
20.4
21.2
23.8
26.3
27.6
27.7
30.5
29.4
33.5
37.8
29.7
34.2
38.4
42.8
130 °C
12.2
14.2
15.5
17.3
18.7
21.0
22.3
23.2
25.9
28.7
30.1
30.2
33.3
32.1
36.5
41.2
32.4
37.3
41.9
46.7
114.3 -
139.7 -
168.3 -
219.1 -
273.0 -
329.0 -
355.3 -
406.4 -
457.2 -
508.0 -
610.0 - 1000
711.0 - 1100
813.0 - 1200
Type of installation:
Pipe distance:
Ground temperature:
Coverage height:
Soil conductivity:
Conductivity of PE jacket:
Conductivity of PUR foam:
2-pipe, laid in the ground
a
a
=
T
E
=
H =
l
E
=
l
PE
=
l
PUR
=
0.20 m
10 °C
0.8 m
1.2 W/mK
0.4 W/mK
0.0260 W/mK
l
E
T
E
Heat loss during operation:
q = U·(T
B
-T
E
)[W/m]
U = Heattransfercoefficient[W/mK]
T
B
= Average temperature between VL/RL [°C]
T
E
= Average ground temperature [°C]
23.5.2023 BGP
Subject to technical changes
H
