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Global Dryers
DDA Series
- For high temperature applications
Model: [ DDA0020, DDA0030, DDA0050, DDA0060, DDA0090, DDA0150, DDA0190, DDA0240, DDA0280, DDA0390, DDA0530, DDA0630, DDA0770, DDA0950, DDA1060, DDA1270, DDA1520, DDA1970 ]
The main advantages of GLOBAL Refrigerant Dryer
High inlet temperature applications (DDA Series)
Low pressure drop
Environmental friendly gas R134a/R407c
Advance digital control
Dry air down to 3 °C pressure dew-point
Oversized condenser and heat exchanger
Reliable electronic automatic drain
High efficiency of moisture separator
Compact and robust design
Energy saving due to low power consumption
Fully insulated to prevent sweating on cold surface
Simple and easy maintenance
Operation
The process of drying compressed air by GLOBAL refrigerant air dryer goes through the following stages:
Step 1:
Compressed air enters the GLOBAL refrigeration dryer, loaded with moisture, passes through the air-to-air heat exchanger and is pre-cooled by the chilled out going compressed air prior to entering the air-to-refrigerant heat exchanger.
Step 2:
The pre-cooled air is channelled towards the second phase of cooling, where it reaches below 3°C through the air-to-refrigerant heat exchanger. At this moment, the moisture contained in the compressed air in the form of vapour condenses and is dragged to next stage by gravity and airflow.
Step 3:
The compressed air, which was cooled during the previous step, goes through a high efficiency separator which separate out the water from the compressed air. The water is then discharged from the system by the timer controlled automatic drain. The compressed air now free fo all condensation, goes on to the next stage.
Step 4:
The chilled and dry compressed air then leaves the high efficiency separator, passes through the secondary side of the air-to-air heat exchanger and gets reheated by the in-coming compressed air before leaving the dryer.
Technical Data for DDA Series Compressed Air Dryer with Built-in After-Cooler
Model
DDA0020
DDA0030
DDA0050
DDA0060
DDA0090
DDA0150
DDA0190
DDA0240
DDA0280
Refrigerant Type
134a
134a
134a
407c
407c
407c
407c
407c
407c
Flow Rate Capacity (FAD)
m
3
/min
0.51
0.95
1.40
1.88
2.83
4.30
5.50
6.80
8.10
cfm
18.00
33.53
49.41
66.35
99.88
151.76
194.12
240.00
285.88
Conn. Size (inch)
1"
1"
1"
1"
1"
1·1/2"
1·1/2"
1·1/2"
2"
Installed Power (kW)
0.92
0.92
0.92
1.05
1.07
1.42
1.42
2.20
2.20
Max Absorbed (Amp)
4.10
4.10
4.10
4.77
4.90
6.60
6.60
10.00
10.00
Power Supply (V/Ph/Hz)
220/1/50
220/1/50
220/1/50
220/1/50
220/1/50
220/1/50
220/1/50
220/1/50
220/1/50
Dimension and Weight
Width
(mm)
388
388
388
388
388
388
388
388
450
Depth
(mm)
718
718
718
718
718
868
868
868
1200
Height
(mm)
880
880
880
880
880
1140
1140
1140
1280
Wt.
(kg)
70
75
83
86
90
105
115
135
170
Model
DDA0390
DDA0530
DDA0630
DDA0770
DDA0950
DDA1060
DDA1270
DDA1520
DDA1970
Refrigerant Type
407c
407c
407c
407c
407c
407c
407c
407c
407c
Flow Rate Capacity (FAD)
m
3
/min
11.00
15.00
18.00
22.00
27.00
30.00
36.00
43.00
56.00
cfm
388.24
529.41
635.29
776.47
952.94
1058.82
1270.59
1517.65
1976.47
Conn. Size (inch)
2"
2·1/2"
2·1/2"
2·1/2"
2·1/2"
3"
3"
3"
3"
Installed Power (kW)
2.55
4.42
4.42
7.30
7.30
8.88
11.70
11.70
n/a
Max Absorbed (Amp)
11.60
6.72
6.72
11.10
11.10
13.50
15.50
15.50
n/a
Power Supply (V/Ph/Hz)
220/1/50
380/3/50
380/3/50
380/3/50
380/3/50
380/3/50
380/3/50
380/3/50
380/3/50
Dimension and Weight
Width
(mm)
450
600
600
600
600
600
600
600
600
Depth
(mm)
1200
1200
1200
1200
1200
1500
1500
1500
1500
Height
(mm)
1280
1500
1500
1500
1500
1850
1850
1850
1850
Wt.
(kg)
185
280
310
340
360
415
425
465
475
The airflow rate shown refer to the free air delivery from the compressor (suction 20°C and 1 bar absolute) and at the following rated operating conditions: Working pressure 7 bar g, compressed air inlet temperature 65°C and pressure dew-point 3°C. Maximum operating conditions: Maximum designed pressure 16 bar g, maximum room temperature 45°C, maximum inlet temperatue 80°C.
