PREMANT district heating pipe
Heat loss
Insulation thickness 2
Heat losses q [W/m] for one pipe
PRE 6.211
U-value
W/mK
0.1110
0.1311
0.1424
0.1606
0.1794
0.2009
0.2105
0.2193
0.2530
0.2870
0.3047
0.2985
0.3412
0.3297
0.3425
0.3899
0.3357
0.3879
0.4381
0.4899
0.5405
PREMANT
26.9 -
33.7 -
42.4 -
48.3 -
60.3 -
76.1 -
88.9 -
Average temperature between VL/RL T
B
[°C]
110
110
125
125
140
160
180
225
250
280
355
450
500
560
630
710
800
900
50 °C
4.4
5.2
5.7
6.4
7.2
8.0
8.4
8.8
10.1
11.5
12.2
11.9
13.6
13.2
13.7
15.6
13.4
15.5
17.5
19.6
21.6
60 °C
5.5
6.6
7.1
8.0
9.0
10.0
10.5
11.0
12.7
14.3
15.2
14.9
17.1
16.5
17.1
19.5
16.8
19.4
21.9
24.5
27.0
70 °C
6.7
7.9
8.5
9.6
10.8
12.1
12.6
13.2
15.2
17.2
18.3
17.9
20.5
19.8
20.5
23.4
20.1
23.3
26.3
29.4
32.4
80 °C
7.8
9.2
10.0
11.2
12.6
14.1
14.7
15.4
17.7
20.1
21.3
20.9
23.9
23.1
24.0
27.3
23.5
27.2
30.7
34.3
37.8
90 °C
8.9
10.5
11.4
12.8
14.4
16.1
16.8
17.5
20.2
23.0
24.4
23.9
27.3
26.4
27.4
31.2
26.9
31.0
35.0
39.2
43.2
100 °C
10.0
11.8
12.8
14.5
16.1
18.1
18.9
19.7
22.8
25.8
27.4
26.9
30.7
29.7
30.8
35.1
30.2
34.9
39.4
44.1
48.6
110 °C
11.1
13.1
14.2
16.1
17.9
20.1
21.0
21.9
25.3
28.7
30.5
29.9
34.1
33.0
34.2
39.0
33.6
38.8
43.8
49.0
54.0
120 °C
12.2
14.4
15.7
17.7
19.7
22.1
23.2
24.1
27.8
31.6
33.5
32.8
37.5
36.3
37.7
42.9
36.9
42.7
48.2
53.9
59.4
130 °C
13.3
15.7
17.1
19.3
21.5
24.1
25.3
26.3
30.4
34.4
36.6
35.8
40.9
39.6
41.1
46.8
40.3
46.5
52.6
58.8
64.9
114.3 -
139.7 -
168.3 -
219.1 -
273.0 -
323.9 -
355.6 -
406.4 -
457.2 -
508.0 -
610.0 -
711.0 - 1000
813.0 - 1100
914.0 - 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
