AD 270-1700 Industrial Dehumidifier
Desiccant Rotor
Silica gel rotor adsorption dehumidifiers designed for mid-scale industrial process and storage applications. With a self-regulating PTC electric regeneration system and AISI 304 stainless steel housing, they deliver continuous humidity control from −20°C to +40°C across a wide airflow range from 270 m³/h to 1,700 m³/h.
Adsorption Technology
AD series units operate on an adsorption principle using two separate air streams. Process air passes through the silica gel rotor; the silica gel absorbs water vapour from the air, drying it. As the rotor slowly turns, regeneration air is directed in the opposite direction: heated to +100°C by electric heaters, this airstream strips the absorbed moisture from the rotor, restoring its initial adsorption capacity. The moisture-laden regeneration air is then discharged to the outside.
Humid air passes through a G3 filter and is directed to the silica gel rotor; the fan drives the airstream using negative pressure.
The silica gel rotor adsorbs water vapour from the process air; the dried airstream is delivered to the process or conditioned space.
PTC electric heaters raise regeneration air temperature to ~100°C; this hot airstream passes through the rotor in the opposite direction, stripping and expelling moisture.
The rotor slowly rotates between adsorption and regeneration zones, providing uninterrupted dehumidification.
Materials & Structural Features
AISI 304 stainless steel; high resistance to corrosive environments and industrial process conditions. Top panel is removable for maintenance.
High-efficiency silica gel rotor with a honeycomb structure of corrugated heat-resistant sheets, providing a large adsorption surface and low air pressure drop. Operates undamaged in saturated air conditions; non-combustible and non-flammable.
Gearmotor and belt drive system; rotates the rotor at a slow, stable speed. Rotor shaft is fitted with ball bearings and manufactured from steel.
Self-regulating PTC element electric heating coil; maintains constant surface temperature and maximises energy efficiency.
Process and regeneration fans directly coupled to IP55 / ISO F class single-phase or EC motors. Manual speed adjustment via potentiometer available on AD420 and above.
Separate G3 filters on both process air and regeneration air inlets.
Panel compliant with European standards; main switch, integrated humidity sensor and display, manual/automatic mode.
Standard spiral duct compatible connections; process air inlet, dry air outlet, regeneration air inlet and wet air outlet.
Model-by-Model Technical Data
* Capacity values measured at 20°C / 60% relative humidity.
| Parameter | AD-270 | AD-420 | AD-700 | AD-820 | AD-1250 | AD-1700 |
|---|---|---|---|---|---|---|
| Capacity (kg/h)* | 0.99 | 2.17 | 2.58 | 4.32 | 5.54 | 8.95 |
| Process Airflow | 270 m³/h | 420 m³/h | 700 m³/h | 820 m³/h | 1,250 m³/h | 1,700 m³/h |
| Process Static Pressure | 340 Pa | 360 Pa | 300 Pa | 100 Pa | 230 Pa | 260 Pa |
| Process Fan Power | 138 W | 157 W | 170 W | 170 W | 440 W | 720 W |
| Regeneration Airflow | 50 m³/h | 90 m³/h | 135 m³/h | 210 m³/h | 270 m³/h | 420 m³/h |
| Regen. Static Pressure | 135 Pa | 100 Pa | 130 Pa | 210 Pa | 130 Pa | 140 Pa |
| Regen. Fan Power | 85 W | 175 W | 175 W | 175 W | 175 W | 190 W |
| Drive Motor Power | 3.0 W | 3.0 W | 3.0 W | 3.0 W | 3.0 W | 3.0 W |
| Regeneration Type | Electric | Electric | Electric | Electric | Electric | Electric |
| Installed Power | 1.75 kW | 2.6 kW | 3.5 kW | 6.6 kW | 6.6 kW | 13.2 kW |
| Heating Coil Temp. Rise | 75°C | 85°C | 90°C | 105°C | 85°C | 105°C |
| Power Supply | 230V/1/50Hz | 230V/1/50Hz | 230V/1/50Hz | 400V/3+N/50Hz | 400V/3+N/50Hz | 400V/3+N/50Hz |
| Max. Power Consumption | 1.97 kW | 2.93 kW | 3.84 kW | 6.95 kW | 7.22 kW | 14.12 kW |
| Max. Current | 6.6 A | 12.7 A | 12.9 A | 12.6 A | 13.6 A | 21.0 A |
| Sound Pressure Level | 47 dB(A) | 49 dB(A) | 51 dB(A) | 64 dB(A) | 69 dB(A) | 70 dB(A) |
| Sound Power Level | 75 dB(A) | 77 dB(A) | 79 dB(A) | 92 dB(A) | 97 dB(A) | 98 dB(A) |
| Operating Temperature | −20°C / +40°C | −20°C / +40°C | −20°C / +40°C | −20°C / +40°C | −20°C / +40°C | −20°C / +40°C |
| Dimensions (A×B×C) | 407×450×428 mm | 475×609×509 mm | 475×609×509 mm | 581×745×740 mm | 581×745×740 mm | 710×1150×860 mm |
| Weight | 23 kg | 35 kg | 37 kg | 57 kg | 62 kg | 118 kg |
| Process Air Inlet | Ø125 mm | Ø200 mm | Ø200 mm | Ø250 mm | Ø250 mm | Ø315 mm |
| Dry Air Outlet | Ø125 mm | Ø200 mm | Ø200 mm | Ø250 mm | Ø250 mm | Ø315 mm |
| Regen. Air Inlet | Ø125 mm | Ø160 mm | Ø160 mm | Ø160 mm | Ø160 mm | Ø200 mm |
| Wet Air Outlet | Ø80 mm | Ø125 mm | Ø125 mm | Ø160 mm | Ø160 mm | Ø200 mm |
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