
Installation Mechanical
36
RTAF-SVX001K-EN
Free-Cooling Unit with Ethylene Glycol, With Turbulators
Figure 22.
Evaporator water pressure drop, 35% ethylene glycol, free-cooling on —
115 to 250 tons, 2-pass with turbulators
0
20
40
60
80
100
120
140
160
180
200
220
0
200
400
600
800
1000
1200
Pr
e
s
s
ur
e
D
ro
p
(f
t
H2
O
)
Flow (GPM)
115
130
150
170
180
200
215
230
250
Figure 23.
Evaporator water pressure drop, 35% ethylene glycol, free-cooling on —
280 to 500 tons, 1-pass with turbulators
0
20
40
60
80
100
120
140
160
180
200
220
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Pr
e
s
s
ur
e
D
ro
p
(f
t
H2
O
)
Flow (GPM)
280
310
350
410
450
500