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

One: Clarify Three Key Elements for Clean Room Air Conditioning

Cleanliness grade (determining system type):

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

Ten thousand and below:AHU+ High-Efficiency Air Distribution Louvers

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

Air Exchange Rate: Thousand-grade50-60 times/h, 10,000-level 25-30 times/h, 100,000-level 15-20 times/h

Section Two: Clean Room Air Conditioning2000-square-meter recommendation solution

1、Cleanroom Class 10,000 and Above

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

Advantages: Flexible zoning, energy-efficient, and moisture and temperature control.Purity Control Conflict

2、Ten-thousand-level Cleanliness

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

Section III: Selection of Chiller Units for the Clean Room Air Conditioning System

System Type         Applicable Grade          Estimated Cooling Capacity           Recommended Configuration                          

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

2、Air-Cooled Modular Chiller Unit     Area Control           Modular assembly       3 x 100RT, Flexible Start and Stop

3、Tornado Air-cooled Chiller Unit     Ten million and below    200,000 square meters estimated         Easy to install, but lower energy efficiency.

 Rapid Calculation:2,000 sqm x 4m height x 250 x 5℃ temperature difference + 50kW of equipment heat ≈ 300kW (85RT), recommend selecting 2 units of 150RT screw compressors

Section 4: Standard Configuration of Air Filter for Cleanroom Air Conditioning

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 Distribution Louvers

FFU：Translation not provided as no Chinese content was included.H13 High-Efficiency Filter, On-Site Leak Testing

V. Key Design Points for Cleanroom Air Conditioning System

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

2、Press Differential Control: Maintain Positive Pressure in Clean Areas over Non-Clean Areas≥10Pa

3、Energy-saving Measures: Variable Frequency Fan (Energy-saving)30% Energy Savings, Free Fresh Air Cooling During Transitional Seasons, Heat Recovery

4、Redundant Design: One cold source equipment in use, one in reserve20% cooling capacity expansion space