21-5400-7D0001/-
05/2023-EHT-466854
Notice Technical data subject to change without notice.
No claims for damage arising from alternations, errors or misprints shall be allowed.
Page 9 / 40
Next, obtain the basic heat loss in W/m using the following table
7
:
Table A: Basic heat loss in W/m
Pipe ø in
DN (inch)
DN8
(1/4")
DN10
(3/8")
DN15
(1/2")
DN20
(3/4")
DN25
(1")
DN32
(1 1/4")
DN40
(1 1/2")
DN50
(2")
DN65
(2 1/2")
DN80
(3")
DN100
(4")
DN125
(5")
DN150
(6")
DN200
(8")
DN250
(10")
DN300
(12")
In
su
la
tio
n
th
ic
kn
es
s
in
mm
15
25
5.0
5.8
6.7
7.8
9.2
11.0
12.1
14.5
17.6
20.1
25.0
29.9
35.5
45.3
55.6
65.4
35
7.2
8.3
9.5
11.2
13.1
15.6
17.3
20.6
25.0
28.6
35.6
42.6
50.5
64.5
45
9.3
10.8
12.4
14.5
17.0
20.3
22.4
26.8
32.5
37.1
46.3
55.4
65.6
75
16.0
18.5
21.2
24.9
29.3
34.8
38.5
46.0
55.8
100
22.1
25.6
29.4
34.5
40.5
48.2
53.3
125
28.9
33.5
38.4
45.0
52.9
20
25
4.3
4.9
5.6
6.5
7.5
8.9
9.8
11.6
13.9
15.8
19.5
23.3
27.4
34.9
42.7
50.1
35
6.1
7.0
8.0
9.2
10.7
12.6
13.9
16.5
19.8
22.5
27.8
33.1
39.1
49.7
60.8
45
7.9
9.1
10.3
12.0
13.9
16.4
18.0
21.4
25.7
29.2
36.2
43.0
50.8
64.5
75
13.6
15.6
17.7
20.6
23.9
28.2
31.0
36.7
44.2
50.2
62.1
100
18.9
21.6
24.5
28.4
33.1
39.0
42.9
50.8
61.1
125
24.6
28.2
32.1
37.2
43.2
50.9
56.0
25
25
3.8
4.3
4.9
5.6
6.5
7.6
8.3
9.8
11.7
13.2
16.2
19.2
22.6
28.6
34.9
40.8
35
5.4
6.2
7.0
8.0
9.2
10.8
11.8
13.9
16.6
18.8
23.1
27.4
32.2
40.7
49.7
58.2
45
7.1
8.0
9.1
10.4
12.0
14.0
15.4
18.1
21.6
24.4
30.0
35.6
41.8
52.8
64.5
75
12.2
13.8
15.6
17.9
20.6
24.1
26.4
31.0
37.1
41.9
51.5
61.1
100
16.8
19.1
21.5
24.7
28.5
33.3
36.5
42.9
51.3
58.0
125
22.0
24.9
28.1
32.3
37.3
43.5
47.7
56.1
30
25
3.5
4.0
4.4
5.0
5.8
6.7
7.3
8.6
10.2
11.4
14.0
16.5
19.3
24.3
29.6
34.6
35
5.0
5.6
6.3
7.2
8.2
9.6
10.4
12.2
14.5
16.3
19.9
23.5
27.5
34.6
42.2
49.3
45
6.5
7.3
8.2
9.3
10.7
12.4
13.6
15.8
18.8
21.2
25.9
30.5
35.7
45.0
54.8
64.0
75
11.1
12.5
14.0
16.0
18.4
21.3
23.3
27.2
32.3
36.4
44.4
52.4
61.4
100
15.4
17.3
19.4
22.2
25.4
29.5
32.2
37.6
44.6
50.3
61.4
125
20.1
22.7
25.4
29.0
33.2
38.5
42.0
49.1
58.3
40
25
3.1
3.4
3.8
4.3
4.9
5.6
6.1
7.0
8.2
9.2
11.2
13.0
15.2
19.0
23.0
26.7
35
4.4
4.9
5.4
6.1
7.0
8.0
8.6
10.0
11.7
13.1
15.9
18.6
21.6
27.0
32.7
38.1
45
5.7
6.3
7.0
8.0
9.0
10.3
11.2
13.0
15.2
17.1
20.6
24.2
28.1
35.1
42.5
49.4
75
9.8
10.9
12.1
13.7
15.5
17.8
19.3
22.3
26.2
29.3
35.4
41.5
48.3
60.3
100
13.5
15.1
16.7
18.9
21.4
24.6
26.6
30.8
36.2
40.5
49.0
57.4
125
17.6
19.7
21.8
24.7
28.0
32.1
34.8
40.3
47.3
52.9
50
25
2.8
3.1
3.4
3.8
4.3
4.9
5.3
6.1
7.1
7.9
9.4
11.0
12.7
15.7
19.0
22.0
35
4.0
4.4
4.9
5.4
6.1
7.0
7.5
8.6
10.1
11.2
13.4
15.6
18.1
22.4
27.0
31.3
45
5.2
5.7
6.3
7.1
8.0
9.1
9.8
11.2
13.1
14.6
17.4
20.3
23.5
29.1
35.1
40.7
75
8.9
9.8
10.8
12.2
13.7
15.6
16.8
19.3
22.4
25.0
30.0
34.9
40.3
50.0
60.2
100
12.3
13.6
15.0
16.8
18.9
21.5
23.2
26.7
31.0
34.6
41.4
48.2
55.8
125
16.0
17.8
19.6
22.0
24.7
28.1
30.4
34.8
40.6
45.1
54.1
100
25
2.2
2.4
2.5
2.8
3.1
3.4
3.6
4.1
4.6
5.0
5.9
6.7
7.6
9.2
10.8
12.3
35
3.1
3.3
3.6
4.0
4.4
4.9
5.2
5.8
6.6
7.2
8.4
9.5
10.8
13.0
15.4
17.6
45
4.0
4.3
4.7
5.2
5.7
6.3
6.7
7.5
8.5
9.3
10.9
12.4
14.0
17.0
20.0
22.8
75
6.8
7.5
8.1
8.9
9.8
10.8
11.5
12.9
14.7
16.0
18.7
21.2
24.1
29.1
34.3
39.2
100
9.5
10.3
11.2
12.3
13.5
15.0
16.0
17.9
20.3
22.2
25.8
29.4
33.3
40.2
47.5
54.2
125
12.4
13.5
14.6
16.0
17.6
19.6
20.8
23.3
26.5
29.0
33.7
38.4
43.6
52.6
62.0
70.9
7
Heat loss calculations are based on IEC/IEEE 60079-30-1:2015 Annex C and IEC/IEEE 60079-30-2:2015 Annex E. The following assumptions have been made:
Medium not in motion
Single layer insulation
No gap between pipe and insulation layer
No gap between insulation layer and weather shielding
Ambient temperature: -20 °C
Outdoor installation, wind speed: 20 m/s
Application of a safety factor of +10 %
For other values contact your local BARTEC distributor.
ΔT in °C
