28
Example: Unit with a given nominal flow rate of 4.8 l/s
Water flow rate, l/s
legend
1 Unit pump curve
2 Plate heat exchanger pressure drop (to be measured with the pressure gauge
installed at the water inlet and outlet)
3 Installation pressure drop with control valve wide open
4 Installation pressure drop after valve control to obtain the specified flow rate
Pr
essur
e dr
op
, kP
a
9.2 - Evaporator pump flow/pressure curve
single pumps
legend
1 30RW-RWA 020-045
2 30RW-RWA 060-090
3 30RW-RWA 110-150
4 30RW-RWA 160-300
Dual pumps
Water flow rate, l/s
Av
ailable pr
essur
e, kP
a
Water flow rate, l/s
Av
ailable pr
essur
e, kP
a
legend
1 30RW-RWA 060-090
2 30RW-RWA 110-185
3 30RW-RWA 210-300
1
2
3
4
0
25
50
75
100
125
150
175
200
2
4
6
8
10
50
100
150
200
250
0
5
10
15
20
25
2
1
4
3
0
50
100
150
200
250
0
5
10
15
20
25
30
2
1
3
9.3 - Available static system pressure (evaporator side)
single pump
Water flow rate, l/s
Av
ailable pr
essur
e, kP
a
Water flow rate, l/s
Av
ailable pr
essur
e, kP
a
legend
1 30RW/RWA 020
2 30RW/RWA 025-030
3 30RW/RWA 040
4 30RW/RWA 045
5 30RW/RWA 060
6 30RW/RWA 070
7 30RW/RWA 080
8 30RW/RWA 090
9 30RW/RWA 110
10 30RW/RWA 120
11 30RW/RWA 135
12 30RW/RWA 150
13 30RW/RWA 160-185
14 30RW/RWA 210-245
15 30RW/RWA 275-300
Dual pumps
legend
1 30RW/RWA 060
2 30RW/RWA 070
3 30RW/RWA 080
4 30RW/RWA 090
5 30RW/RWA 110
6 30RW/RWA 120
7 30RW/RWA 135
8 30RW/RWA 150
9 30RW/RWA 160-185
10 30RW/RWA 210-245
11 30RW/RWA 275-300
50
100
150
200
250
0
5
10
15
20
2
1
4
3
6
5
7
8
10
9
11
13
12
14 15
50
100
150
200
250
0
5
10
20
25
15
2
1
4
3
6
5
7
8
9
10 11
