Sizing - Gardner Denver 9VXRD Series Instruction Manual

Upper Piping
Upper
Shell Cap
1
6
1a
3.3 Check separator daily to be sure automatic drain
is discharging.
NOTE: Units with two stage filtration have two sets of drains.
3.4 Blow down separator weekly by pushing test
button on control panel.
3.5 Rebuild drain mechanism annually.
To facilitate service, maintenance kits are available.

SIZING

Determining dryer capacity at actual operating conditions
To determine the maximum inlet flow capacity of a dryer at
various operating conditions, multiply the rated capacity from
Table 1 by the multipliers shown in Table 2.
2
Example: How many scfm can an air-cooled model 1000
handle when compressed air to be dried is at 200 psig and
5
100°F; ambient air temperature is 80°F; and a 45°F dew point
temperature is desired?
Answer: 1,000 x 1.22 x 1.12 x 1.2 = 1,640 scfm.
TABLE 1
Rated capacity (scfm) and pressure drop @ 100 psig inlet
pressure, 100°F inlet temperature, and 100°F ambient tem-
perature
MODEL
Rated capacity
of air-cooled
models (scfm)
TABLE 2
Air capacity correction factors (Multipliers)
INLET
PRESSURES
psig kgf/cm
50 3.5
80 5.6
100 7.0
125 8.8
150 10.5
1b
175 12.3
200 14.0
COOLING MEDIUM*
AMBIENT
TEMPERATURE
°F
80
90
100
110
*Air-cooled models; water-cooled models use 1.15 multiplier if cooling
water is below 35 ° C, 95 ° F.
1000 1250 1500
60 Hz 1000 1250 1500
50 Hz 840 1050 1250
INLET COMPRESSED AIR CONDITIONS
INLET TEMPERATURES
80°F 90°F
2 27°C 32°C
1.35 1.05
1.50 1.17
1.55 1.23
1.63 1.31
1.70 1.37
1.75 1.42
1.80 1.47
DEWPOINT
MULTIPLIER TEMPERATURE
°C °F
27 1.12
38
32 1.06
45
38 1.00
50
43 0.94
1750 2000 2500 3000
1750 2000 2500 3000
1460 1700 2100 2500
100°F 110°F 120°F
38°C 43°C 49°C
0.84 0.69 0.56
0.95 0.79 0.66
1.00 0.82 0.70
1.07 0.91 0.74
1.13 0.95 0.80
1.18 0.99 0.84
1.22 1.03 0.89
OUTLET DEWPOINT
MULTIPLIER
°C
3 1.0
7 1.2
10 1.3
9