Cleanroom HVAC and Air Handling Equipment

Industrial Desiccant Rotor Dehumidifier

A dual-air-stream dehumidifier that continuously adsorbs water vapor on a slowly rotating desiccant wheel and releases it into a heated reactivation airstream.

Continuous Desiccant Rotation
Separated Process and Reactivation Air
Low-Temperature Moisture Removal
Modular Service Sections

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Product Introduction

The industrial desiccant rotor dehumidifier divides a high-surface-area desiccant wheel between process and reactivation sectors. The process fan sends humid air through the dry portion of the rotor, while a separate heated airflow drives captured moisture out of the rotating media and discharges it outdoors. Sealed sector plates, filters and controlled rotor speed maintain a stable moisture balance even when the room temperature is too low for efficient refrigerant condensation.

Key Features

A silica-gel or molecular-sieve composite wheel presents thousands of parallel channels with low airflow resistance.

Independent process and reactivation fans prevent the wet exhaust stream from re-entering the dry-air outlet.

Electric, steam or gas reactivation choices match available utilities and operating-cost priorities.

Separate access doors expose filters, rotor drive, seals and heater components without disturbing adjacent air-treatment sections.

Customer Product Concerns

Refrigeration alone loses dehumidification capacity at low temperature and cannot economically reach many process humidity targets.

A cold production room remains humid even though the cooling coil operates continuously.Desiccant adsorption removes vapor without requiring the process air to cross a refrigerated dew-point surface.

Leakage between wet reactivation air and dry process air causes unstable outlet moisture.Adjustable sector seals and balanced fan pressures maintain physical separation across the rotating wheel.

An overloaded prefilter contaminates the rotor face and increases pressure drop.Dedicated process and reactivation filter stages are accessible from separate service doors for scheduled replacement.

A fixed reactivation heater consumes full energy during a reduced moisture load.Modulating heater output and variable rotor speed reduce regeneration input as the required dry-air condition changes.

Typical Applications

Pharmaceutical powder processing roomsMoisture-sensitive electronics assemblyCold storage and freezer anteroomsControlled raw-material warehousesDry-air supply for laboratory equipment

Technical Parameters

Typical modular construction ranges for an industrial rotary desiccant dehumidifier are provided below.

Core Material	Silica-gel or molecular-sieve composite honeycomb rotor inside a mineral-wool-insulated galvanized steel casing
Panel Thickness	30-50 mm double-skin insulated casing panel thickness
Effective Width	900-2600 mm nominal process-section width
Maximum Length	Up to 5500 mm overall modular unit length
Steel Facing Thickness	0.8-1.2 mm galvanized or pre-painted steel inner and outer skins
Core Density	40-80 kg/m³ typical mineral-wool casing insulation density
Thermal Conductivity	Approximately 0.036-0.045 W/(m·K) for the mineral-wool casing fill
Surface Finish	Blue powder-coated access panels with galvanized internal frame and corrosion-resistant rotor housing
Joint Type	Cam-lock or bolted modular casing with gasketed doors, flexible duct collars and sealed rotor-sector interfaces
Customization	Available based on the intended application and operating environment.

Available Options

Electric, steam or gas-fired reactivation heaterPrecooling and aftercooling coil modulesMERV 8 through high-efficiency final filtrationVariable-speed process fan and dew-point control package

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