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8.3 Temperature calculation
The illustration below shows the maximum surface
temperature of the pump as a result of the maximum
liquid temperature and temperature rise in the shaft
seal.
Fig. 4
Maximum surface temperature
8.3.1 Temperature class
The maximum surface temperature for dust is stated
on the nameplate.
8.3.2 Shaft seal temperature
In order to calculate the pump surface temperature
and temperature class, the below tables show the
temperature rise in the shaft seal for different shaft
diameters, different pressure values and various
media classes.
T
M
0
6
4
44
5 2
315
Pos.
Figure legend
1
Maximum surface temperature of the
pump
2
Temperature rise in the shaft seal.
Calculated by Grundfos. See section
.
3
Maximum liquid temperature
Temperature class
Maximum surface
temperature
[°C]
T1
450
T2
300
T3
200
T4
135
T5
100
T6
85
1
2
3
Shaft seal: HQQx/HUUx/HQUx and
AUUx/AQQx/DQQx
Rpm: 2900/3500
Shaft
diameter
[mm]
Pressure [MPa]
1
2.5
4
Shaft seal temperature rise [°C]
12
22
24
26
16
22
28
36
Shaft seal: HQBx/HUBx
Rpm: 2900/3500
Shaft
diameter
[mm]
Pressure [MPa]
1
2.5
4
Shaft seal temperature rise [°C]
12
18
20
22
16
22
28
36
Содержание CRT Series
Страница 1: ...CR CRI CRN CRT ATEX approved pumps Installation and operating instructions GRUNDFOS INSTRUCTIONS...
Страница 2: ...2...
Страница 21: ...BG 21 5 2 5 2 1 5 2 2 CR 32 2 1 X X X X XXXX CR CRN m3 h A B E H I K NPSH M O P S T THD U ATEX Y Z...
Страница 125: ...GR 125 5 2 5 2 1 5 2 2 CR 32 2 1 X X X X XXXX CR CRN m3 h A B E H I K NPSH M O P S T THD U Y Z...
Страница 132: ...GR 132 9 9 1 1 6 CR 2 M2 3 4 P2 5 6 7 8 9 10 11 12 MAGdrive 13 tmax 14 15 16 17 18 50 K 19 9 1 1...
Страница 268: ...RU 268 5 2 5 2 1 5 2 2 CR 32 2 1 X X X X XXXX CR CRN 3 A B E H I K NPSH M O P S T THD U ATEX Y Z...
Страница 334: ...UA 334 5 2 5 2 1 5 2 2 CR 32 2 1 X X X X XXXX CR CRN 3 A B E H I K NPSH M O P S T THD U ATEX Y Z...
Страница 347: ...CN 347 5 2 5 2 1 5 2 2 CR 32 2 1 X X X X XXXX CR CRN m3 h A B E H I K NPSH M O P S T THD U ATEX Y Z...
Страница 353: ...CN 353 9 ATEX 9 1 1 6 CR ATEX 2 M2 3 4 P2 5 6 7 8 9 10 ATEX 11 ATEX 12 13 t 14 15 16 17 18 50 K 19 9 1 1...
Страница 378: ...Arabic AR 378 5 2 5 2 5 2 1 5 2 1 XXXX X X X X 1 2 32 CR CR CRN 3 5 2 2 5 2 2 A B E H I NPSH K M O P S THD T ATEX U Y Z...