How it works
Refrigerated air dryers separate humidity from compressed air by cooling the air in an evaporator. This cooling effect comes from the evaporation of the refrigerant. As the air cools, it looses its ability to hold moisture. The condensate is then collected and removed in a separator.
A heat recovery air to air heat exchanger that reheats the air to ambient temperature is in the Airdryer for optimal efficiency.
This humid air then moves into a separator and then dry air is preheated in the heat recovery side. The total air side pressure drop is typically 20-30 kPa (3-4 psi)
Introduction
AL series Air dryer are brazed plate heat exchangers designed for separation of humidity in compressed air.
Applications
Compressed air drying
Benefits
• Compact
• Easy to install
• Self-cleaning
• Low level of service &maintenance is required
• All units are pressure and leak tested
• Gasket free
Design specification
Air side:P = 7 bar(g), T dew = 3°C, ∆P = 20 kPa, T in = 35°C, T out = 27°C
Refrigerant R134a, T evap = 0°C, SH = 5K
Max working Pressure
Air side: 16 bar(g) @ 20°C
Refrigerant side: 35 bar(g) @ 20°C
According to PED
Material Specification
Mainparts: Stainless steel
Brazing material: Copper
Separator Efficiency rate
Droplets size: 95%
Mounting
Stud-bolts available
Model |
A |
B |
C |
D |
E |
AL14 |
76 |
206 |
42 |
172 |
44 |
AL26 |
111 |
310 |
50 |
250 |
50-100 |
AL95 |
191 |
616 |
92 |
519 |
85-276 |
AirDryer Selection
"Dew point" is the temperature at which the water vapor in the air starts to condense in the water separator.
This is normally maintained slightly above the freezing point of water, 2-5 °C (35-40 °F).