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Salle blanche HVAC et équipement de manutention de l'air
Cleanroom Unité de climatisation à extension directe
A cleanroom air-conditioning package that uses a refrigerant evaporator coil for direct sensible cooling and dehumidification without a chilled-water circuit.
- Direct Refrigerant Cooling
- Matched Condensing System
- Controlled Dehumidification
- Cleanroom Filter Staging
Introduction de produit
The cleanroom direct-expansion air-conditioning unit combines a refrigerant evaporator coil with cleanable filters, a drainable condensate section and variable-speed supply fan. A matched outdoor condensing unit or remote condenser rejects heat without requiring a central chilled-water plant. Multiple compressor stages or inverter capacity allow the coil to follow varying cleanroom load, while reheat can stabilize room temperature during dehumidification. Refrigerant piping, oil return and coil distribution are designed for the selected distance and lift.
Key Features
Variable or multi-stage compressor capacity reduces cycling under partial sensible load.
A drainable insulated coil section contains condensate produced during moisture removal.
Reheat and fan-speed control support temperature stability during latent operation.
Préoccupations du client produit
DX systems must match refrigerant capacity, air volume and coil temperature closely to avoid cycling, water carryover and unstable humidity.
A single large compressor repeatedly starts and stops at low cleanroom load.Inverter or staged compressors modulate closer to the active sensible and latent demand.
An unevenly fed evaporator leaves parts of the coil warm and reduces dehumidification.Matched distributors and expansion control maintain stable refrigerant feed across circuits.
Condensate is carried downstream during high latent load.Proper coil face velocity, eliminator clearance and a full drain pan control water.
Long refrigerant piping causes oil-return and capacity problems.Pipe size, traps and allowable lift are selected for the matched compressor and circuit.
Les applications typiques
Independent cleanroom suitesMedical-device assembly roomsSmall pharmaceutical laboratoriesElectronics test areasCleanroom retrofit projects
Paramètres techniques
Representative casing values for a cleanroom DX air-conditioning unit are shown below.
| Matériaux de base | Closed-cell polyurethane insulation in double-skin indoor-unit panels |
|---|---|
| Panneau épaisseur | 40–60 mm insulated casing |
| Largeur effective | 700–2400 mm nominal indoor-unit width |
| Longueur maximale | Up to 5500 mm including filters, evaporator, reheat and fan |
| Acier face épaisseur | 0.6–1.0 mm coated casing sheet |
| Densité Core | 40–45 kg/m³ closed-cell polyurethane |
| Conductivité thermique | 0.022–0.026 W/(m·K) for panel insulation |
| surface finie | Powder-coated outer casing with galvanized or stainless wet-section liner |
| Type joint | Gasketed low-leakage panels with brazed refrigerant headers and flexible duct collars |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Air-cooled or water-cooled condensing unitFixed-stage or inverter compressorHot-gas, electric or hot-water reheatRemote controller and building-management interface
Planning a Cleanroom Direct-Expansion Air Conditioning Unit specification?
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