18
3
In order to ensure a satisfactory function of the machine exhaust system, the subsequent pipe system that is
installed in the laundry, should as minimum be dimensioned according to the following guidelines. If the pressure
loss in the piping system is increased as a result of dimensioning faults, this will cause a reduction of the exhaust
and thus the machine capacity.
In case of short distances between the ironer and the outlet to the outside, i.e. less than 15m including allowance
for bends, the exhaust pipe can be made as a channel with diameter 125mm for all machine types.
In case of longer distances, we recommend to use a larger pipe diameter. When judging the exhaust channel,
see the following tables that deal with pressure loss and the dynamic pressure by different pipe dimensions and
also deal with the equivalent pipe lengths for different part elements in an exhaust channel.
Dynamic pressure (Pd) in [Pa] and specific pressure loss (∆p) in [Pa/m] dependent on volume flow in m³/h and
pipe diameter (dia) in mm. S is the speed in m/s.
Diameter
Volume
100
Pd
∆p S
125
Pd
∆p S
150
Pd
∆p S
m³/hour
Pa
Pa
m/s
Pa
Pa
m/s
Pa
Pa
m/s
250
47
14
8,8
19
4
5,7
9
2
3,9
350
93
26
12,4
38
8
7,9
18
3
5,5
450
153
42
15,9
63
13
10,2
30
5
7,1
550
229
62
19,5
94
19
12,4
45
7
8,6
650
320
85
23,0
131
26
14,7
63
10
10,2
750
426
112
26,5
174
34
17,0
84
13
11,8
850
547
143
30,1
224
44
19,2
108
17
13,4
950
683
178
33,6
280
54
21,5
135
21
14,9
1050
834
217
37,1
342
66
23,8
165
25
16,5
1150
1001
259
40,7
410
79
26,0
198
30
18,1
1250
1182
305
44,2
484
92
28,3
234
35
19,6
1350
1379
355
47,7
565
107
30,6
272
41
21,2
Diameter
Volume
160
Pd
∆p S
180
Pd
∆p S
200
Pd
∆p S
m³/hour
Pa
Pa
m/s
Pa
Pa
m/s
Pa
Pa
m/s
250
7
1
3,5
5
1
2,7
3
0
2,2
350
14
2
4,8
9
1
3,8
6
1
3,1
450
23
4
6,2
15
2
4,9
10
1
4,0
550
35
5
7,6
22
3
6,0
14
2
4,9
650
49
7
9,0
30
4
7,1
20
2
5,7
750
65
10
10,4
41
5
8,2
27
3
6,6
850
83
12
11,7
52
7
9,3
34
4
7,5
950
104
15
13,1
65
8
10,4
43
5
8,4
1050
127
18
14,5
79
10
11,5
52
6
9,3
1150
153
22
15,9
95
12
12,6
63
7
10,2
1250
180
25
17,3
113
14
13,6
74
8
11,1
1350
210
29
18,7
131
16
14,7
86
9
11,9