Modular cleanroom air handling unit with multiple insulated treatment sections

Cleanroom HVAC and Air Handling Equipment

Modular Air Handling Unit

A section-built double-skin air handler that combines filtration, thermal treatment, fan and humidity-control functions in a serviceable cleanroom HVAC platform.

Configurable Treatment Sections
Thermal-Break Double Skin
Low-Leakage Panel Joints
Service-Friendly Access

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Product Introduction

The modular air handling unit is assembled from matched casing sections around a rigid corrosion-protected frame. Filter banks, chilled-water or direct-expansion coils, heating coils, humidifiers, energy-recovery devices and plug-fan arrays can be placed in the required process order. Smooth internal panels and gasketed access doors support routine cleaning, while thermally separated skins limit condensation on the outer casing. Shipping splits allow large units to pass through plant-room access routes without sacrificing a continuous sealed air path after assembly.

Key Features

Standardized casing modules allow treatment functions to be arranged in the actual airflow sequence rather than forced into a fixed package.

Double-skin insulated panels reduce casing heat gain, radiated fan noise and surface condensation risk.

Gasketed block joints and access doors maintain a controlled air path while permitting component replacement.

Direct-drive plug fans or fan arrays provide stable airflow control without belts in the supply airstream.

Customer Product Concerns

A cleanroom air handler must fit the building, deliver the scheduled treatment sequence and remain accessible without creating uncontrolled leakage paths.

A fixed factory package cannot accommodate the required filter, coil and humidifier sequence.Individual modules are arranged around the specified psychrometric process and pressure-drop budget.

Large equipment cannot pass through the available plant-room opening.Engineered shipping splits divide the casing into manageable sections with gasketed field block joints.

Cold casing bridges create condensation and staining around panel frames.Thermal-break profiles and continuous insulation separate the inner and outer metal skins.

Fan maintenance interrupts the entire cleanroom supply system.Multi-fan arrays can provide staged capacity and allow one fan position to be isolated for service.

Typical Applications

Pharmaceutical cleanroom HVAC plantsBiotechnology production suitesMedical-device manufacturingElectronics cleanroomsLaboratory air-treatment systems

Technical Parameters

Typical construction ranges for a configurable cleanroom modular air-handling unit are listed below.

Core Material	Rigid polyurethane foam or high-density mineral-wool insulation within double-skin casing panels
Panel Thickness	50–70 mm insulated double-skin casing
Effective Width	1000–4000 mm nominal casing width
Maximum Length	Up to 12000 mm assembled length using bolted shipping sections
Steel Facing Thickness	0.5–1.0 mm inner and outer sheet, selected by casing duty
Core Density	40–45 kg/m³ polyurethane or 80–120 kg/m³ mineral wool
Thermal Conductivity	0.022–0.040 W/(m·K), depending on insulation material
Surface Finish	Powder-coated galvanized outer skin with galvanized or 304 stainless-steel cleanable inner skin
Joint Type	Thermal-break aluminum frame with compression-gasketed panel and block joints
Customization	Available based on the intended application and operating environment.

Available Options

Chilled-water, hot-water, steam or DX coilsPlug-fan array or single EC fan sectionBag, compact and terminal filter stagesHumidifier, dehumidifier and heat-recovery modules

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