2000-70000m³/h Axial Fan Clean Room Dx Air Handling Unit AHU for Capacity HVAC System

Product Overview

Modular Air Handling Unit

Key Characteristics&Core Functions

• Exceptional Air Filtration

  • Multi-Stage System: Pre-filters (G4/F5) → Medium-efficiency (F7/F8) → Terminal HEPA/ULPA (>99.99% @ 0.3/0.12 µm).

  • Performance Monitoring: Differential pressure sensors track filter loading for predictive maintenance.

• Stringent Airflow & Pressure Control

  • High Airflow: Delivers very high air change rates for rapid contaminant dilution.

  • Advanced Control: Employs CAV/VAV valves and VFD fans for dynamic air balance.

  • Pressure Cascades: Maintains defined pressure gradients (e.g., +15 Pa, +10 Pa) to enforce unidirectional airflow and zone isolation.

• Precise Temperature & Humidity Control

  • Tight Tolerances: Maintains stability within narrow bands (e.g., ±0.5°C, ±5% RH).

  • Deep Conditioning: Uses deep cooling/desiccant dehumidification and clean-steam humidification.

  • Reheat Requirement: Essential for temperature correction post-dehumidification; a major energy consumer.

•  Superior Construction & Hygiene

  • Airtight Design: Prevents infiltration of untreated air.

  • Sanitary Interiors: Smooth, crevice-free, corrosion-resistant materials (e.g., stainless steel).

  • Dry Design: Sloped condensate pans ensure complete drainage to prevent microbial growth.

• Energy Efficiency Focus

  • Heat Recovery: Incorporates enthalpy wheels or plate heat exchangers to reduce cooling/heating loads by preconditioning outside air, lowering operational costs.

Cleanroom HVAC Applications

Technical Specifications

AHU Configuration & Components

Main AHU Components

• Fresh Air / Return Air Section
  Controls the introduction and recirculation of air according to the HVAC design.
• Pre-Filtration Section
  Removes larger airborne particles before air enters the finer filtration stages.
• Cooling Coil
  Removes sensible and latent heat from the air. It can be connected to a chilled-water system or other specified cooling source.
• Heating Section
  Provides heating when required for temperature control or winter operation.
• Humidification / Dehumidification
  Configured when the cleanroom process requires tighter humidity control.
• Fan Section
  Provides the required airflow and static pressure for the downstream air distribution system.
• HEPA Filtration
  Can be incorporated where the system design requires high-efficiency final filtration.
• Control Section
  Monitors and regulates operating parameters such as temperature, humidity, fan status, and differential pressure.

Airflow & Filtration System

Fresh / Return Air
↓
Pre-Filter
↓
Fine Filter
↓
Cooling / Heating Coil
↓
Fan Section
↓
HEPA Filter*
↓
Cleanroom Air Distribution

HEPA filter location depends on the cleanroom HVAC design. In some systems, final HEPA filtration is installed at the terminal FFU or ceiling level rather than directly inside the AHU

Temperature & Humidity Control

The AHU can be configured to support temperature and humidity control through cooling coils, heating sections, humidification and dehumidification functions. Control parameters are selected according to the cleanroom process, product requirements, outdoor conditions and HVAC design.

• Supply air temperature
• Return air temperature
• Relative humidity
• Cooling coil
• Heating coil
• Humidifier
• Dehumidification
• Sensors
• PLC/HMI

HVAC System Integration

The Clean Room AHU can be integrated with:

• Chilled Water Chiller
• Chilled Water Pumps
• Cooling Towers, where applicable
• Ductwork
• HEPA Filters
• FFUs
• Cleanroom Terminal Units
• Differential Pressure Monitoring
• Temperature & Humidity Sensors
• BMS

The AHU primarily conditions and supplies air, while terminal filtration and airflow distribution are determined by the overall cleanroom HVAC design.

Engineering & Selection Process

Engineering & Selection Process

• 1. Requirement Analysis
  Review cleanroom classification, room volume, occupancy, process heat load, outdoor air requirements, temperature and humidity targets.
• 2. Airflow Calculation
  Determine supply and return airflow based on room requirements, air-change strategy, pressure relationships and process requirements.
• 3. AHU Selection
  Select airflow capacity, static pressure, cooling/heating capacity, filtration stages, fan type and control configuration.
• 4. System Integration
  Coordinate AHU with chillers, pumps, ductwork, HEPA filters, FFUs, sensors and BMS.
• 5. Manufacturing
  Manufacture the AHU according to the approved configuration and technical specifications.
• 6. Testing & Commissioning
  Perform applicable factory inspection and support on-site commissioning according to the project scope.

Related Cleanroom Project Experience

Pharmaceutical Cleanroom Project – Mauritius

• Application: Pharmaceutical manufacturing
• Scope: HVAC system design / AHU integration / installation support
• Country: Mauritius

Main Components&Functional Sections

1. 1. Mixing Box Section

      • Function: To mix outdoor fresh air (Outside Air) with recirculated indoor air (Return Air) in a controlled ratio to maintain indoor air quality and energy efficiency.

      • Key Components: Motorized dampers for outside, return, and exhaust air, often interlocked for proper pressure control.

   2. Filtration Section

      • Function: To remove airborne particulates (dust, pollen, microbes).

      • Filter Types:

        • Pre-filters (G3-G4): Protect downstream coils and components.

        • Medium-efficiency filters (F5-F8): Used in offices, hospitals, and general commercial spaces.

        • High-efficiency filters (HEPA, ULPA): Used in cleanrooms, operating theaters, and critical environments.

   3. Thermal Conditioning Section

      • Function: The core for controlling air temperature and moisture.

      • Key Components:

        • Cooling Coil: Uses chilled water (e.g., 6°C supply, 12°C return) or direct-expansion refrigerant to cool and dehumidify air.

        • Heating Coil: Uses hot water, steam, or electric heating elements to heat air.

        • Humidifier: Adds moisture. Common types: Dry steam injectors, adiabatic humidifiers (e.g., high-pressure mist), and electrode/ resistive steam humidifiers.

   4. Fan Section

      • Function: Provides the mechanical energy to move air through the unit and the entire duct system. It is the "heart" of the AHU.

      • Key Types: Centrifugal fans (forward or backward curved).

      • Configuration: Draw-through (fan after coils, preferred for even air distribution and coil drainage) or blow-through (fan before coils).

      • Control: Almost always equipped with a Variable Frequency Drive (VFD) for variable airflow and energy savings.

   5. Auxiliary Sections

      • Sound Attenuators: Lined sections or silencers to reduce fan and airflow noise.

      • Heat Recovery Section: Devices like enthalpy wheels, plate heat exchangers, or run-around coils to recover energy from exhaust air and precondition incoming outside air, significantly improving efficiency.

      • Plenum / Flow Straightener: Ensures uniform airflow across filters and coils.

Engineering Process

• Requirement Analysis
  Review airflow, cooling/heating load, filtration and cleanroom requirements.
• AHU Configuration
  Select casing, filters, coils, fans and control components according to project specifications.
• Manufacturing & Inspection
  Assemble and inspect the AHU before shipment.
• Installation & Commissioning
  Support installation, airflow adjustment and system commissioning.
• Testing & Documentation
  Provide applicable testing records, operation manuals and project documentation.

Related Products

SHP also provides cleanroom HVAC and environmental control equipment, including:

• Air-Cooled Chillers
• Fan Filter Units (FFUs)
• Cleanroom Air Showers
• Pass Boxes
• Cleanroom Doors and Windows
• HVAC Control Systems

Company Profile

As a leading supplier of clean room system and clean room products,SHP is an organization that prides itself both on technical expertise as well as next level customer care.SHP offers Cleanroom Solutions to meet our clients' particular requirements specialized for pharmaceutical,biotechnology and microelectronic cleanrooms.We also provide a range of Clean Room products including wall panel,door&window and a series of clean room equipment.

As an ISO 9001:2015 certified organization,we are committed to continually improving our customer service programs while meeting or exceeding your product quality criteria.With our comprehensive customer solution offerings,excellence in products,and decades of technical expertise,we are confident that SHP can match the best to your application.

Certifications

Certifications

• ISO 9001:2015
• CE Certificates (if applicable)
• Cleanroom Related Testing Reports

Customer Photos

Why SHP

• More than 20 Years of Cleanroom Engineering Experience
• More Than 2,100 Delivered Cleanroom Projects
• Projects Delivered in More Than 40 Countries
• A Team of 12 Senior Cleanroom and HVAC Engineers
• Full Scope from Design and Manufacturing to Installation and Commissioning
• Serving Pharmaceutical, Electronics, Medical and Laboratory Facilities

FAQ

Q1: Where is your company?

A1:Our company is located in Suzhou City, close to Shanghai. It's a 1.5-hour drive from PVG Airport.

Q2: Are you a manufacturer or a trading company? What can I buy from you?
A2: We are manufacturers. We focus on cleanroom projects, air showers, FFUs, through boxes, dosing rooms, laminar flow hoods and benches, AHUs, and sealed doors and Windows. 

Q3:When is your delivery time? 
A3: If your cleanroom project includes AHU, the delivery time is 35 days. If you purchase goods without an AHU, the delivery time is 10 days. 

Q4: How long is your warranty period? What kind of after-sales service can you offer?
A4: Our warranty period is two years after the completion of the project. During the warranty period, if there are any problems, we will replace it. If you can't handle it, we will send an engineer to solve it for free.

Q5:Can you conduct cleanroom validation? 
A5: Yes. We can provide DQ, IQ, OQ and PQ documentation, FAT/SAT reports, operation manuals, maintenance guides and complete cleanroom drawings according to project requirements. 

Q6:What are your advantages?
A6: We have a complete technical team consisting of 12 senior cleanroom and HVAC engineers to provide you with technical support. We have completed over 2,100 cleanroom projects in China and overseas. Such as Japan, Indonesia, Thailand, Bangladesh, India, North Macedonia, Saudi Arabia, Yemen, Russia, Moldova, Switzerland, Norway, the United Kingdom, Spain, France, Belgium, Kuwait, Tunisia, Mauritius, Sri Lanka, Mongolia, Philippines, Nepal, Sudan, Somaliland, Australia, New Zealand, Canada, Algeria, Egypt, Singapore, and the United States.