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17
5.0 REFERENCE
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.
Example: How many scfm can a 60 Hz air-cooled model 1000
handle when compressed air to be dried is at 200 psig and 100°F;
ambient air temperature is 80°F?
Answer: 1,000 x 1.22 x 1.12 = 1,366 scfm.
TABLE 1
Rated capacity (scfm) @ 100 psig inlet pressure, 100°F inlet
temperature, and 100°F ambient temperature.
MODEL
800
1000
1250
1500
1750
2000
2500
3000
Rated capacity
of air-cooled
models (scfm)
60 Hz
50 Hz
800
672
1000
830
1250
1050
1500
1250
1750
1460
2000
1670
2500
2080
3000
2500
TABLE 2
Air capacity correction factors (Multipliers)
INLET COMPRESSED AIR CONDITIONS
INLET
INLET TEMPERATURES
PRESSURES
80°F
90°F
100°F
110°F
120°F
psig
barg
27°C
32°C
38°C
43°C
49°C
50
80
100
125
150
175
200
3.4
5.5
6.9
8.6
10.3
12.1
13.8
1.35
1.50
1.55
1.63
1.70
1.75
1.80
1.05
1.17
1.23
1.31
1.37
1.42
1.47
0.84
0.95
1.00
1.07
1.13
1.18
1.22
0.69
0.79
0.82
0.91
0.95
0.99
1.03
0.56
0.66
0.70
0.74
0.80
0.84
0.89
COOLING MEDIUM*
AMBIENT
TEMPERATURE
MULTIPLIER
°F
°C
80
90
100
110
27
32
38
43
1.12
1.06
1.00
0.94
*Air-cooled models; water-cooled models use 1.15 multiplier if cooling water is
below 95°F (35°C).