High-airflow cleanroom recirculation air handling unit

Equipamento de manuseio de ar e HVAC para sala limpa

Unidade de manuseio de ar de recirculação

A high-volume return-air unit that recirculates filtered cleanroom air while handling sensible load and maintaining stable airflow.

High Recirculation Airflow
Low Fan Energy Path
Stable Sensible Cooling
Variable-Speed Air Volume

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Introdução do produto

The recirculation air handling unit moves the high air volume needed for particle dilution without repeatedly conditioning the entire stream as outdoor air. Return air passes through accessible filters, a cooling or trim coil and direct-drive fans before returning to ceiling filters or supply distribution. Fresh conditioned air can enter upstream as a smaller measured quantity. Large coil face area and low-pressure-drop components reduce fan energy, while airflow control compensates for terminal filter loading and operating mode changes.

Características-chave

Large filter and coil face areas keep pressure drop low across the high recirculation volume.

A small conditioned fresh-air connection can be mixed with the return stream without oversizing the outdoor-air unit.

Direct-drive fan arrays provide turndown and service redundancy for continuous production areas.

Sensible trim cooling removes room and fan heat without duplicating full latent treatment.

Preocupações do produto do cliente

High cleanroom air-change rates magnify every unnecessary filter, coil and duct pressure loss in the recirculation path.

A small coil and filter bank create excessive fan energy at high recirculation volume.Expanded face area lowers component velocity and reduces pressure drop.

Terminal filter loading gradually reduces cleanroom air changes.Variable-speed fans maintain the scheduled airflow or duct static-pressure setpoint.

One large fan failure stops production airflow.A multi-fan array can continue at reduced capacity while one fan position is isolated.

Mixing humid outdoor air into the return stream destabilizes room moisture.A separate conditioned fresh-air connection introduces air at a controlled dew point.

Aplicações típicas

Large pharmaceutical cleanroomsSemiconductor clean productionMedical-device assembly hallsBattery manufacturing clean zonesHigh-air-change laboratories

Parâmetros técnicos

The following ranges describe a high-volume cleanroom recirculation AHU casing.

Material principal	Polyurethane or high-density mineral-wool acoustic and thermal panel insulation
Painel de espessura	50–60 mm double-skin casing
Largura efetiva	1200–4200 mm nominal casing width
Comprimento máximo	Up to 9000 mm for filters, coil, fan array and mixing section
Aço enfrentando espessura	0.6–1.0 mm galvanized or coated casing skins
Densidade Core	42–45 kg/m³ polyurethane or 80–110 kg/m³ mineral wool
Condutividade térmica	0.022–0.040 W/(m·K) depending on panel core
Superfície acabado	Powder-coated outer skin with smooth galvanized or coated inner skin
Tipo conjunto	Gasketed low-leakage panel joints and bolted modular fan/coil sections
Customização	Disponível com base na aplicação pretendida e no ambiente operacional.

Opções disponíveis

EC fan wall with N+1 fan positionChilled-water or refrigerant trim coilReturn prefilter or fine-filter bankTop, side or end return and supply connections

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