When designing clean room HVAC system, the main goal is to ensure that the required temperature, humidity, air velocity, pressure and cleanliness parameters are maintained in clean room. The following is detailed clean room HVAC system solutions.
1. Basic composition
Heating or cooling, humidification or dehumidification and purification equipment: This is the core part of HVAC system, which is used to perform necessary air treatment to meet the requirements of the clean room.
Air conveying equipment and its pipelines: send the treated air into each clean room and ensure the circulation of the air.
Heat source, cold source and its pipeline system: provide the necessary cooling and heat for the system.
2. System classification and selection
Centralized clean room HVAC system: suitable for occasions with continuous process production, large clean room area and concentrated location. The system centrally treats the air in machine room and then sends it to each clean room. It has the following characteristics: The equipment is concentrated in machine room, which is convenient for noise and vibration treatment. One system controls multiple clean rooms, requiring each clean room to have a high simultaneous use coefficient. According to needs, you can choose a direct current, closed or hybrid system.
Distributed clean room HVAC system: suitable for occasions with a single production process and dispersed clean room. Each clean room is equipped with clean room equipment or HVAC system.
Semi-centralized clean room HVAC system: It combines the characteristics of centralized and decentralized systems. It has both centralized clean room and HVAC dispersed in each clean room.
3. Air conditioning and purification
Air conditioning: According to the requirements of the clean room, the air is treated by heating, cooling, humidification or dehumidification equipment to ensure the stability of temperature and humidity.
Air purification: Through three-level filtration of coarse efficiency, medium efficiency and high efficiency, dust and other pollutants in the air are removed to ensure cleanliness. Primary filter: It is recommended to replace it regularly every 3 months. Medium filter: It is recommended to replace it regularly every 3 months. Hepa filter: It is recommended to replace it regularly every two years.
4. Airflow organization design
Upward delivery and downward return: A common airflow organization form, suitable for most clean rooms. Side-upward delivery and side-down return: Suitable for clean rooms with specific requirements. Ensure sufficient purification air supply volume: to meet the requirements of the clean room.
5. Maintenance and troubleshooting
Regular maintenance: Including cleaning and replacing filters, checking and controlling the differential pressure gauge on the electrical box, etc.
Troubleshooting: For pressure difference control problems, air volume not meeting the standard, etc., timely adjustments and troubleshooting should be carried out.
6. Summary
The design of the clean room HVAC system needs to comprehensively consider the specific requirements of the clean room, production process, environmental conditions and other factors. Through reasonable system selection, air conditioning and purification, airflow organization design, and regular maintenance and troubleshooting, it can ensure that the required temperature, humidity, air velocity, pressure, cleanliness and other parameters are maintained in clean room to meet the needs of production and scientific research.
Post time: Jul-25-2025