Installation Mechanical
34
RTAF-SVX001K-EN
Units with Free-Cooling Option
Free-Cooling Unit with Ethylene Glycol, Without Turbulators
Figure 18.
Evaporator water pressure drop, 35% ethylene glycol, free-cooling on —
115 to 250 tons, 2-pass without turbulators
0
20
40
60
80
100
120
140
160
180
200
0
200
400
600
800
1000
1200
P
r
essu
r
e Drop
(
ft
H
O)
Flow (GPM)
g
p
115
130
150
170
180
200
215
230
250
Figure 19.
Evaporator water pressure drop, 35% ethylene glycol, free-cooling on —
280 to 500 tons, 1-pass without turbulators
0
20
40
60
80
100
120
140
160
180
200
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Pre
s
sure
D
r
o
p
(ft
HO)
Flow (GPM)
280
310
350
410
450
500