A refrigeration dryer is a system designed to remove moisture from compressed air by cooling it. It plays a vital role in industrial applications, ensuring that compressed air remains dry and free from water vapour, which can otherwise cause corrosion, damage equipment, and reduce efficiency.
Key Features
Available in 45 standard models
Capacities from 10.6 CFM to 3540 CFM
Microprocessor based DelSmart LCD card to read dew point, operating status, fault(s) indication
Provides pressure dew points range to 3-4°C
Proprietary heat exchanger
Certified and reliable performance
Compact design
According to ISO 7183 compressed refrigerant air dryer
Optional Features
Filter and total dryer bypass line with valves
Special Delair filters for removal of water, oil mists, oil vapour and dust particles with electronically operated drain valves
Explosion proof controls for offshore application
Std. Working Parameters
Pressure: 7.0 kg/cm2(g)
Max. Working Pressure: 14 kg/cm2(g)
Air Inlet Temperature: 38°C
Ambient Temperature: 38°C
Water Pressure: 3-6 kg/cm2(g)
Water Inlet Temperature: 32°C
Delair Refrigeration type Dryer operates on the method of cooling the air to near freezing point to remove the moisture, and the cold air is reheated by the incoming air to approximately 10°C below the incoming compressed air temperature at nominal conditions.
The Refrigeration Dryer consists of an air drying unit with a centrifugal cum demister pad condensate separator and a refrigeration circuit.
The refrigeration circuit consists mainly of a compressor, a condenser, a receiver, a vapour liquid accumulator with liquid refrigerant and an evaporator. The air drying unit consists of two kinds of heat exchangers: air-to-air heat exchangers and refrigerant-to-air heat exchangers.
THE HEART OF THE SYSTEM IS THE SPECIAL FOAMED-IN, PATENTED HEAT EXCHANGER, WHICH MAKES IT OUTPERFORM OTHER DRYERS.
The function of the air-to-air heat exchanger is to lower the load on the refrigerant system and, secondly, to warm the outgoing cold air pipelines to the required temperature.
The refrigerant-to-air heat exchanger(s) further cools the air to the required temperature, thus condensing the water vapour from the air, which is automatically drained.
MODEL
CAPACITY
DIMENSIONS
(IN MM)
APPROX.
WT.
(IN KG.)
CONNECTION
(IN INCHES)
CONN.
LOAD
(IN KW)
WATER
QTY.
(IN
M3/HR)
CFM
CMH
Ltr./SEC.
L
W
H~
AIR
WATER
RD-18 A
10.6
18
5
880
465
700
90
1/2″ BSP.
—
0.29
—
RD-54 A
32
54
15
880
465
700
90
1/2″ BSP.
—
0.38
—
RD-110 A
65
110
31
880
465
830
100
3/4″ BSP.
—
0.47
—
RD-150 A
88
150
42
1100
465
830
200
1″ BSP.
—
0.62
—
RD-180 A
106
180
50
1100
465
830
200
1″ BSP.
—
0.62
—
RD-220 A
130
220
62
1100
465
830
210
1″ BSP.
—
0.93
—
RD-290 A
170
290
81
1200
465
830
215
1″ BSP.
—
0.93
—
RD-360 A
212
360
101
1250
600
950
280
2″ F
—
1.47
—
RD-430 A
254
430
120
1250
600
950
280
2″ F
—
1.47
—
RD-540 A
318
540
151
1250
600
950
295
2″ F
—
1.75
—
RD-600 A
355
600
168
1250
700
950
335
2″ F
—
1.94
—
RD-720 A
424
720
202
1300
750
1000
340
2″ F
—
2.41
—
RD-850 A
500
850
238
1300
750
1000
385
3″ F
—
2.72
—
RD-970 A
572
970
272
1300
750
1000
385
3″ F
—
2.72
—
RD-1060 A
624
1060
297
1480
900
1200
520
3″ F
—
3.22
—
RD-1150 A
678
1150
322
1480
900
1200
520
3″ F
—
3.22
—
RD-1270 A
749
1270
356
1480
900
1200
525
3″ F
—
3.86
—
RD-1350 A
795
1350
378
1480
900
1200
525
3″ F
—
3.86
—
RD-1690 A
996
1690
473
1480
1000
1270
610
4″ F
—
4.93
—
RD-1910 A
1124
1910
535
1650
1050
1320
700
4″ F
—
6.02
—
RD-2160 A
1271
2160
605
1650
1050
1320
750
4″ F
—
6.85
—
RD-2550 A
1500
2550
714
1800
1200
1500
1100
4″ F
—
8.24
—
RD-2880 A
1695
2880
806
1800
1200
1500
1150
4″ F
—
10.48
—
RD-3000 A
1770
3000
840
1800
1200
1500
1150
4″ F
—
10.48
—
RD-540 W
318
540
151
1250
600
930
300
2″ F
1/2″ BSP.
1.29
1
RD-600 W
355
600
168
1250
600
930
325
2″ F
3/4″ BSP.
1.57
1
RD-720 W
424
720
202
1250
600
930
325
2″ F
3/4″ BSP.
1.57
1
RD-850 W
500
850
238
1300
700
1050
390
3″ F
3/4″ BSP.
2.04
2
RD-970 W
572
970
272
1300
700
1050
390
3″ F
3/4″ BSP.
2.04
3.5
RD-1060 W
624
1060
297
1300
700
1050
450
3″ F
3/4″ BSP.
2.35
3.5
RD-1150 W
678
1150
322
1300
700
1050
450
3″ F
3/4″ BSP.
2.35
3.5
RD-1270 W
749
1270
356
1300
700
1050
450
3″ F
3/4″ BSP.
2.35
3.5
RD-1350 W
795
1350
378
1300
700
1050
450
3″ F
3/4″ BSP.
2.35
3.5
RD-1690 W
996
1690
473
1400
800
1200
545
4″ F
1″ F
4.43
3.5
RD-1910 W
1124
1910
535
1400
800
1200
550
4″ F
1.1/2″ F
4.02
4.5
RD-2160 W
1271
2160
605
1600
900
1280
625
4″ F
1.1/2″ F
4.67
5.5
RD-2550 W
1500
2550
714
1600
900
1280
715
4″ F
1.1/2″ F
5.38
5.5
RD-2880 W
1695
2880
806
1600
900
1280
735
4″ F
1.1/2″ F
6.34
5.5
RD-3000 W
1770
3000
840
1600
900
1280
735
4″ F
1.1/2″ F
6.34
5.5
RD-3340 W
1971
3340
935
2000
1650
1400
1300
6″ F
1.1/2″ F
8.84
7
RD-4310 W
2543
4310
1207
2000
1650
1400
1400
6″ F
2″ F
9.32
9
RD-6000 W
3540
6000
1680
2000
1650
1400
1700
6″ F
2″ F
12.66
11
DelCare
Our wide network of trained Airgineers® is renowned for providing prompt and reliable services. They ensure regular maintenance of your machine and offer technical support for any required accessory changes or machine faults. For any maintenance or technical support queries, write to us at:
The RD Series operates at a standard pressure of 7.0 kg/cm²(g) with a maximum working pressure of 14 kg/cm²(g), ensuring efficient moisture removal from compressed air.
The RD Series uses a proprietary heat exchanger and advanced refrigeration technology to cool compressed air to near-freezing temperatures, effectively removing moisture and maintaining a reliable pressure dew point of 3-4°C.
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