Great Lakes Air Products EDR-A2 series Instruction Manual - Page 4

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RECOMMENDED SYSTEM DESIGN

A healthy, long-term, and trouble free compressed air supply design should be approached as a complete
system, not individual components. The air compressor Intake location is vital to system health; it should
supply clean fresh air that is free from possible contaminant (e.g. ammonia, chlorine or methane). Any
contaminant entering the compressor intake will be concentrated by a factor of 8 due to the compression
process in a typical compressed air system.
As inlet and ambient temperatures deviate from the design conditions, the moisture holding capacity of
compressed air can change dramatically. The following table represents the correction to load and dryer
capacity at alternate inlet and ambient temperatures. Design Inlet temperature 180°F (82.2°C),
Ambient Temperature 100°F (43.3°C)
Capacity Correction
100°F (37.7°C)
Ambient
105°F (40.5°C)
Temperatures
110°F (43.3°C)
Inlet air pressure also has an impact on dryer capacity the following table will correct capacity for
operating pressures other than the designed 100 PSIG.
Inlet Pressure (PSIG)
Capacity Correction
The pipe connection to the dryer should match the standard connection ports provided. The chart below
is provided as a basic guide to size branch and header piping. It is recommended that shut-off valves with
unions be installed at each port, with a valve bypass to permit isolation of the unit for servicing without
interruption of plant air supply.
Maximum Recommended Compressed Air Flow Schedule 40 pipe @ 95 to 115 PSIG
½"
Pipe Size
Flow (SCFM)
40
125°F
(37.7°C)
1.18
1.07
0.97
80
0.80
¾"
1"
1¼"
100
150
200
Page 4
Inlet Temperature
150°F
180°F
(40.5°C)
(43.3°C)
1.10
1.00
1.00
0.91
0.90
0.82
100
150
1.0
1.15
1½"
2"
2½
350
650
900
Design
200°F
(46.1°C)
0.90
0.82
0.73
200
1.20
3"
4"
6"
1500
2500
5000