York YCAS0098EB, Установка, эксплуатация и обслуживание, Страница: 46 / 184

46
JOHNSON CONTROLS
ETHYLENE GLYCOL
PROPYLENE GLYCOL
A
A
B
B
C
C
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
-10 -8 -6 -4 -2 0 2 4 6 8
-10 -8 -6 -4 -2 0 2 4 6 8
50%
40%
30%
20%
10%
50%
40%
30%
20%
10%
TECHNICAL DATA
The cooler is designed in accordance with ARI-590-92
which allows for an increase in pressure drop of up to
15% above the design value given above. Debris in the
water may also cause additional pressure drop.
When using glycol solutions, pressure drops are higher
than with water (see correction factors to be applied
when using glycol solutions). Special care must be taken
not to exceed the maximum allowed.
A = Correction Factor
B = Mean Temperature through Cooler
C = Concentration W/W
COOLER WATER PRESSURE DROP
(ENGLISH UNITS)
LD03504A
COOLER WATER PRESSURE DROP
(SI UNITS)
FIG. 14 – FLOW RATE AND PRESSURE DROP CHARTS
FIG. 15 – GLYCOL CORRECTION FACTORS
FLOW RATE AND PRESSURE DROP CHARTS
Excessive flow, above the max GPM,
will damage the evaporator.
LD05825A
1
10
100
100 1000
Pressure Drop (ft.
)
Water Flow (gpm)
Water Cooler Pressure Drop
C1
C2
MODEL NUMBER YCAS COOLER
0098, 0118, 0138 C1
0128, 0148, 0158, 0178, 0198, 0208 C2
LD05884A
WATER FLOW (l/s)
1
10
100
1000
100
10
1
PRESSURE DRO
P
(kPa
)
COOLER WATER PRESSURE DROP (SI UNITS)
C1
C2
MODEL NUMBER YCAS COOLER
0098, 0118, 0138 C1
0128, 0148, 0158, 0178, 0198, 0208 C2
GLYCOL CORRECTION FACTORS
7