PREMANT district heating pipe
Heat loss
Insulation thickness 1
Heat losses q [W/m] for one pipe
PRE 6.210
U-value
W/mK
0.1292
0.1572
0.1607
0.1843
0.2054
0.2410
0.2484
0.2599
0.3002
0.3557
0.3887
0.3779
0.4342
0.4239
0.4514
0.4548
0.4413
0.5380
0.6097
0.6840
0.7550
0.8315
PREMANT
Average temperature between VL/RL T
B
[°C]
26.9 -
33.7 -
42.4 -
48.3 -
60.3 -
76.1 -
88.9 -
90
50 °C
5.2
6.3
6.4
7.4
8.2
9.6
9.9
10.4
12.0
14.2
15.5
15.1
17.4
17.0
18.1
18.2
17.7
21.5
24.4
27.4
30.2
33.3
60 °C
6.5
7.9
8.0
9.2
10.3
12.0
12.4
13.0
15.0
17.8
19.4
18.9
21.7
21.2
22.6
22.7
22.1
26.9
30.5
34.2
37.7
41.6
70 °C
7.8
9.4
9.6
11.1
12.3
14.5
14.9
15.6
18.0
21.3
23.3
22.7
26.0
25.4
27.1
27.3
26.5
32.3
36.6
41.0
45.3
49.9
80 °C
9.0
11.0
11.2
12.9
14.4
16.9
17.4
18.2
21.0
24.9
27.2
26.5
30.4
29.7
31.6
31.8
30.9
37.7
42.7
47.9
52.8
58.2
90 °C
10.3
12.6
12.9
14.7
16.4
19.3
19.9
20.8
24.0
28.5
31.1
30.2
34.7
33.9
36.1
36.4
35.3
43.0
48.8
54.7
60.4
66.5
100 °C
11.6
14.2
14.5
16.6
18.5
21.7
22.4
23.4
27.0
32.0
35.0
34.0
39.1
38.2
40.6
40.9
39.7
48.4
54.9
61.6
67.9
74.8
110 °C
12.9
15.7
16.1
18.4
20.5
24.1
24.8
26.0
30.0
35.6
38.9
37.8
43.4
42.4
45.1
45.5
44.1
53.8
61.0
68.4
75.5
83.1
120 °C
14.2
17.3
17.7
20.3
22.6
26.5
27.3
28.6
33.0
39.1
42.8
41.6
47.8
46.6
49.6
50.0
48.5
59.2
67.1
75.2
83.0
91.5
130 °C
15.5
18.9
19.3
22.1
24.6
28.9
29.8
31.2
36.0
42.7
46.6
45.3
52.1
50.9
54.2
54.6
53.0
64.6
73.2
82.1
90.6
99.8
90
110
110
125
140
160
200
225
250
315
400
450
500
560
630
710
800
900
813.0 - 1000
914.0 - 1100
1016.0 - 1200
Type of installation:
Pipe distance:
Ground temperature:
Coverage height:
Soil conductivity:
Conductivity of PE jacket:
Conductivity of PUR foam:
114.3 -
139.7 -
168.3 -
219.1 -
273.0 -
323.9 -
355.6 -
406.4 -
457.2 -
508.0 -
610.0 -
711.0 -
2-pipe, laid in the ground
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
a
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]
l
E
T
E
23.5.2023 BGP
Subject to technical changes
H
