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Installation Mechanical
Free-Cooling Unit with Propylene Glycol, Without Turbulators
Figure 26. Evaporator water pressure drop, 35% propylene glycol, free-cooling on —
115 to 250 tons, 2-pass without turbulators
220
115
200
130
180
150
170
160
180
140
200
120
215
230
100
250
80
60
40
20
0
0
200
Figure 27. Evaporator water pressure drop, 35% propylene glycol, free-cooling on —
280 to 500 tons, 1-pass without turbulators
220
280
200
310
180
350
160
410
140
450
120
500
100
80
60
40
20
0
0
200
400
38
g
,
p
400
600
Flow (GPM)
600
800
1000
1200
Flow (GPM)
,
800
1000
1400
1600
1800
1200
2000
RTAF-SVX001K-EN
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