Global Dryers

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.


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.


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.


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.


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)	m3/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)	m3/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.