Manufacturing Plant Central Air Handling Unit Cooling Air-cooled AHU Ducted HVAC System

Product Overview

Modular Air Handling Unit

Key Characteristics&Core Functions

1. Multi-Stage Air Filtration: A cascading filtration system is employed, progressing from pre-filters (G4/F5) and medium-efficiency filters (F7/F8) to final HEPA/ULPA filters, achieving >99.99% efficiency on sub-micron particles. Continuous monitoring via differential pressure sensors ensures filter integrity and timely maintenance.

2. Precision Airflow & Pressure Management: To maintain cleanliness and directional airflow, these AHUs deliver high air change rates (dozens to hundreds per hour) and utilize advanced CAV/VAV strategies with VFD fans. This enables the establishment and strict maintenance of defined pressure cascades (e.g., +15 Pa to +5 Pa) between zones, preventing cross-contamination.

3. Tight Climate Control: Meeting narrow process tolerances (e.g., ±0.5°C, ±5% RH) necessitates a system capable of deep dehumidification (via cooling coils or desiccant wheels) and precision humidification (using clean steam). A reheat function is essential to correct air temperature post-dehumidification, a significant contributor to system energy use.

4. Robust & Hygienic Construction: The units are built with airtight, leak-preventing casings and feature smooth, non-particulating, corrosion-resistant interior surfaces (e.g., stainless steel) for cleanability. Condensate management is designed to prevent water stagnation and microbial growth.

5. Integrated Energy Recovery: To mitigate high operational energy demands, modern systems incorporate heat recovery devices (such as enthalpy wheels or plate exchangers) to precondition incoming outside air, significantly reducing thermal loads.

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

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

Our Customers

Customer Photos

Why SHP

• Over 20 Years of Expertise in Cleanroom Engineering
• 2,100+ Completed Cleanroom Projects
• Experience Across 40+ Countries
• 12 Experienced Senior Cleanroom & HVAC Engineers
• Design, Manufacturing, Installation and Commissioning Support
• Solutions for 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.