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Cleanroom HVAC and Air Handling Equipment
Dry Room Air Handling Unit
An integrated desiccant air handler that combines deep moisture removal, regeneration, cooling and recirculation for ultra-dry production rooms.
- Desiccant Rotor Drying
- Low Dew-Point Supply
- Separated Regeneration Air
- High Recirculation Efficiency
Product Introduction
The dry room air handling unit removes water vapor beyond the practical range of cooling coils by passing process air through a continuously regenerated desiccant rotor. A pre-cooling stage reduces incoming moisture load, the rotor performs deep drying, and post-cooling controls supply temperature. A separate heated regeneration airstream removes captured moisture from the rotor and discharges it outdoors. Recirculating most of the dry-room air limits the outdoor moisture load, while sealed casing and low-leakage dampers protect the achieved dew point.
Key Features
Separated process and regeneration air paths prevent wet regeneration exhaust from mixing with dry supply air.
Pre-cooling and sensible post-cooling reduce rotor load and set the final supply temperature.
High dry-air recirculation minimizes the quantity of humid outdoor air that requires deep treatment.
Customer Product Concerns
Ultra-low humidity is easily lost through casing leakage, door infiltration, wet regeneration carryover and moisture released by process materials.
A chilled-water coil cannot reach the required dry-room dew point.The desiccant rotor adsorbs remaining vapor after the air is precooled.
Regeneration exhaust leaks into the dry process airstream.Sealed rotor sectors, pressure control and purge arrangements limit cross-stream carryover.
Opening personnel or material doors causes slow humidity recovery.Sufficient recirculation airflow and controlled dry-air make-up remove the infiltration moisture load.
Reactivation heat dominates system energy use.Purge optimization, heat recovery and the appropriate steam, gas, electric or heat-pump source reduce regeneration demand.
Typical Applications
Lithium-ion battery dry roomsMoisture-sensitive pharmaceutical processingDry powder productionElectronics and component storageResearch-scale ultra-dry laboratories
Technical Parameters
Typical insulated casing construction for an integrated dry-room air handling unit is summarized below.
| Core Material | Closed-cell polyurethane insulation with silica-gel or molecular-sieve desiccant rotor media |
|---|---|
| Panel Thickness | 60–100 mm low-leakage insulated casing |
| Effective Width | 1200–4200 mm nominal equipment width |
| Maximum Length | Up to 15000 mm including process and regeneration treatment sections |
| Steel Facing Thickness | 0.8–1.2 mm coated or stainless casing skins |
| Core Density | 40–45 kg/m³ polyurethane panel insulation |
| Thermal Conductivity | 0.022–0.026 W/(m·K) for casing insulation |
| Surface Finish | Powder-coated exterior with sealed galvanized or stainless cleanable inner surfaces |
| Joint Type | Compression-gasketed low-leakage panels with sealed process and regeneration air paths |
| Customization | Available based on the intended application and operating environment. |
Available Options
Silica-gel or molecular-sieve rotorSteam, gas, electric or heat-pump regenerationDeep-drying single or multi-stage arrangementHeat recovery and purge-sector optimization
Planning a Dry Room Air Handling Unit specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
