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Salle blanche HVAC et équipement de manutention de l'air
Unité d'air de maquillage
A dedicated outdoor-air unit that replaces exhausted process air and maintains the intended cleanroom pressure relationship.
- Exhaust Air Replacement
- Pressure Cascade Support
- Tempered Outdoor Supply
- Airflow Tracking Control
Introduction de produit
The makeup air unit delivers conditioned outside air in proportion to fume-hood, process, canopy or room exhaust. Unlike a general fresh-air unit, its primary control duty is mass-balance: supply airflow must respond predictably as exhaust devices start, stop or modulate. Filters, coils and optional humidity treatment bring the outdoor air to a condition that the room or recirculation system can accept without upsetting temperature and moisture control. A low-leakage casing and fast fan response help prevent door forces and unwanted infiltration.
Key Features
Tempering coils prevent replacement air from imposing abrupt heating, cooling or moisture loads on the cleanroom.
Fast variable-speed fan control supports stable room pressure during process exhaust transitions.
Separate intake filtration prevents outdoor particles from entering through uncontrolled building leakage paths.
Préoccupations du client produit
A facility can have sufficient cooling capacity yet still lose pressure control when exhaust and replacement air do not change together.
Starting a process exhaust fan pulls adjacent cleanrooms below their pressure setpoint.The makeup fan follows the combined exhaust airflow signal with a configured offset for pressure cascade.
Untempered winter replacement air causes cold drafts and local condensation.Preheat and final heating stages deliver supply air at a controlled temperature.
Outdoor humidity overwhelms the room AHU during high exhaust operation.Cooling and dehumidification are sized for the full makeup-air latent load.
Unfiltered infiltration enters around doors when replacement air is insufficient.Measured makeup volume enters through staged filters and a defined supply path.
Les applications typiques
Pharmaceutical process exhaust replacementLaboratory fume-hood makeup airClean manufacturing canopy exhaustChemical handling roomsHospital isolation support areas
Paramètres techniques
Representative makeup-air unit casing and connection ranges are provided below.
| Matériaux de base | Closed-cell polyurethane or mineral-wool insulation within double-wall casing |
|---|---|
| Panneau épaisseur | 50–60 mm insulated panel |
| Largeur effective | 800–3000 mm nominal casing width |
| Longueur maximale | Up to 9000 mm with staged filtration and thermal treatment |
| Acier face épaisseur | 0.6–1.0 mm sheet steel casing skins |
| Densité Core | 40–43 kg/m³ polyurethane or 80–96 kg/m³ mineral wool |
| Conductivité thermique | 0.022–0.040 W/(m·K) according to insulation selection |
| surface finie | Powder-coated galvanized exterior with galvanized or stainless wet-section interior |
| Type joint | Thermal-break frame and gasketed block joints with flexible supply-duct connector |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Exhaust-airflow or room-pressure trackingGas, steam, hot-water or electric heatingChilled-water, DX or desiccant dehumidificationOutdoor roof, floor or plant-room arrangement
Planning a Makeup Air Unit specification?
Envoyez-nous vos dimensions, conditions d'installation, objectifs de performance et finition de surface requise.
