FFU Quantity Calculation Method and Deshengxin Technical Support

1. Definition and Purpose of FFU

FFU, standing for Fan Filter Unit, is a modular, self-powered, and highly efficient air purification device. It is widely used in cleanrooms to provide clean and stable air, ensuring the cleanliness of the production environment and meeting process requirements.

2. Basic Parameters for Calculation

Before determining the number of FFUs required, the following basic parameters must be collected:

• Room dimensions (length, width, height);

• Cleanroom cleanliness level;

• Workload within the room;

• Airflow organization method;

• Performance parameters of the HEPA fan filter units (such as air volume, filtration efficiency, etc.).

  
  

3. Airflow Organization Method

The airflow organization method directly impacts the layout and number of FFUs. Common airflow organization methods include laminar flow, turbulent flow, and mixed flow. Laminar flow is suitable for areas with high cleanliness requirements, while turbulent flow is suitable for areas with lower cleanliness requirements.

4. Room Size and Layout

The size and layout of the room determine the arrangement and number of FFUs for the cleanroom. Factors such as the shape, size, height of the room, and equipment layout need to be considered when calculating the number of FFUs.

5. Cleanliness Requirements

The cleanliness level is a crucial factor in determining the number of FFUs. Higher cleanliness levels require stricter requirements for particles in the air, necessitating more FFUs.

6. FFU Performance Parameters

FFU performance parameters include air volume, filtration efficiency, noise, etc. Considering these parameters is essential to meet the cleanliness and comfort requirements of the cleanroom when calculating the number of FFUs.

7. Calculation Method and Steps

• Determine the required air volume per unit area based on the cleanliness level.

• Calculate the room volume based on the room dimensions.

• Calculate the total air volume required based on the room volume and the required air volume per unit area.

• Calculate the required number of FFUs based on the performance parameters of the fan and filter units (such as air volume).

• Adjust the number and layout of the cleanroom FFUs based on the airflow organization method and room layout.

• Increase or decrease the number of FFUs as needed to meet the cleanliness and comfort requirements of the cleanroom.

  
  

Deshengxin Technical Support

If you have any questions regarding FFUs quantity calculation or cleanroom design, please feel free to contact us. Deshengxin boasts a professional technical team dedicated to providing comprehensive technical support and solutions to our clients. Our technicians will offer professional advice and assistance based on your specific needs and circumstances, ensuring that your cleanroom achieves the desired cleanliness and comfort levels.

By adopting a scientific and rational calculation method and leveraging the professional technical support of Deshengxin, you can determine the appropriate number and layout of FFUs to meet the cleanliness and comfort requirements of your cleanroom.