2-40 HP Portable Chillers
Chapter 7: Appendix
60 of 70
Evaporator Water Pressure Drop Tables
Note:
A recirculation pump is required for flows greater than the maximum or
less than the minimum indicated.
Note:
Process flow less than or greater than the flow rates shown below requires
a recirculation pump.
Pressure drops in
Δ
P, psig and kPa
2 HP
3.5 HP
5 HP
7.5 HP
Flow
Δ
P
Flow
Δ
P
Flow
Δ
P
Flow
Δ
P
gpm
lpm
psig
kPa
gpm
lpm
psig
kPa
gpm
lpm
psig
kPa
gpm
lpm
psig
kPa
4.06
15.4
3.5
24.1
8.03
30.4
4.0
27.6
10.0
37.9
1.5
10.5
12.0
45.4
2.3
16.1
6.01
22.8
7.0
48.3
10.00
37.9
6.5
44.8
12.0
45.4
2.2
14.8
16.0
60.6
2.9
20.1
8.02
30.4
11.5
79.3
12.00
45.4
10.0
69.
18.0
68.1
4.7
32.1
20.0
75.7
5.0
34.5
10.00
37.9
18.0
124.1
14.00
53.0
13.0
89.6
24.0
90.8
7.3
50.2
24.0
90.8
6.9
47.4
16.00
60.6
18.0
124.1
28.0
106.0
9.6
65.9
33.0
124.9
12.7
87.8
10 HP
15 HP
20 HP
25 HP
Flow
Δ
P
Flow
Δ
P
Flow
Δ
P
Flow
Δ
P
gpm
lpm
psig kPa gpm lpm
psig
kPa
gpm
lpm
psig
kPa
gpm
lpm
psig
kPa
22.0
83.3
4.7
32.6
30.0
113.6
4.5
31.3
40.0
151.4
4.0
27.6
55.0
208.2
5.5
37.9
30.0
113.6
8.28
57.1
40.0
151.4
7.5
51.7
45.0
170.3
4.0
27.6
58.0
219.5
5.8
40.0
38.0
143.8
12.91
89.0
50.0
189.3
12.4
85.2
50.0
189.3
5.0
34.5
61.0
230.9
6.0
41.4
46.0
174.1
16.77
115.6
60.0
227.1
17.8
122.8
52.0
196.8
6.0
41.4
70.0
264.9
8.5
58.6
50.0
189.3
20.00
137.9
70.0
264.9
24.2
166.6
55.0
208.2
6.5
44.8
30 HP
40 HP
Flow
Δ
P
Flow
Δ
P
gpm
lpm
psig kPa gpm lpm
psig
kPa
72.0
272.5
6.0
41.1
44.7
169.2
2.0
13.8
75.0
283.9
6.5
44.8
58.5
221.4
3.4
23.4
80.0
302.8
8.0
55.2
70.9
268.3
4.9
33.8
85.0
321.7
9.5
65.5
81.6
308.8
6.3
43.5
105.7
400.0
10.3
71.0
Note:
These pressure drop values are valid for single- and no-pump portable
chillers.
Calculating Chiller Nominal Flow and Pressure to Process
•
Flow rate:
Obtain the flow reading from the appropriate pump curve.
•
Pressure:
Obtain a corresponding pressure reading from the pump curve you selected,
then
subtract
the one-pump pressure drop listed in the above table using the
appropriate chiller hp and flow rate.
•
For two
-
pump (Process/Recirc) chillers, do not subtract pressure drop from table above
for process pump.
Содержание A0554831
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Страница 62: ...2 40 HP Portable Chillers Chapter 7 Appendix 62 of 70 7 5 Remote Air Cooled Chiller Configurations...
Страница 65: ...2 40 HP Portable Chillers Chapter 7 Appendix 65 of 70 Typical Piping Schematic 2 and 3 1 2 hp Models...