The selection of a central air conditioning system for the 2,000-square-meter cleanroom hinges on matching the cleanliness level with process requirements. This decision directly impacts the stability of the production environment, long-term energy costs, and product quality, necessitating a comprehensive evaluation of the three key factors: cleanliness standards, temperature and humidity accuracy, and air flow organization.

I. Clarify Three Key Elements for Clean Room Air Conditioning

Cleanliness Grade (Determining System Type):

Ten thousand units and above:MAU+FFU+FCU System (Air Treatment + Terminal Filtration + Coil)

Ten thousand and below:AHU+ High-Efficiency Supply Air Opening

Humidity and Temperature: Standard20-25°C ±2°C, humidity 45-65% ±5%; precision engineering requires a constant temperature and humidity control system

Air Changes: Thousands50-60 times/h, 10,000-level 25-30 times/h, 100,000-level 15-20 times/h

Part II: Cleanroom Air Conditioning2000 sqm recommended solution

1、Cleanroom Class 10,000 and Above

MAU+FFU+FCU Combination: Independent fresh air processing, FFU responsible for filtration, FCU handles cooling and heating loads

Advantages: Flexible zoning, energy-efficient, and humidity control avoidanceAir Quality Control Conflict

2、Ten million-class cleanliness level:

AHU Central Processing: Equipped with primary/medium/Asian high-efficiency filters, and high-efficiency air supply outlets at the terminal.

Section 3: Selection of Air Conditioning Chiller Main Unit for Purification Workshop

System Type         Applicable Grade          Estimated Cooling Capacity           Recommended Configuration                          

1、Screw Chilled Water Unit   10,000 and above      150-200W/m² + Equipment Heat Emission + 20% Redundancy 2 units (one for use, one for backup), each 150 RT

2、Air-cooled Modular Chiller Unit     Zone Control           Modular assembly       3 x 100RT, Flexible Start/Stop

3、Tornado Wind-Cooled Unit     Ten million and below    200,000 sqm estimated         Easy to install, but lower energy efficiency.

 Quick Calculation:2,000 sq m × 4 m height × 250 × 5°C temperature difference + 50 kW equipment heat ≈ 300 kW (85 RT); recommend selecting 2 units of 150 RT screw chillers.

Section 4: Air Filter Configuration Standards for Clean Room Air Conditioning Systems

Ten-thousand-level:Initial EffectG4 + Medium Efficiency F8 + High Efficiency F9 + Terminal FFU (H13)

One Hundred Thousand Level:Initial EffectG4 + Medium Efficiency F7/F8 + Terminal High-Efficiency Air Discharge Ports

FFU：No Chinese content provided.H13 High-Efficiency Filter, on-site leak testing performed

V. Key Design Points for Clean Room Air Conditioning

1、Airflow Organization: Upward and downward airflow, with supply outlets evenly distributed in the ceiling and return outlets located on the lower side of the walls.

2、Pressure Difference Control: Maintain Positive Pressure in Clean Areas Over Non-Clean Areas≥10Pa

3、Energy-Saving Measures: Variable Frequency Fans (Energy Efficient)30%, Free Fresh Air Cooling during Transition Season, Heat Recovery

4、Redundant Design: One for operation, one for backup,预留20% Cooling Capacity Expansion Space