How should the air volume and static pressure of a 220V powered FFU be matched?

Direct answer: 220V indicates the power supply condition of the FFU. The air volume or static pressure cannot be determined by voltage alone. When selecting a model, you should first determine the target air volume, and then check whether the FFU can overcome the actual system resistance at this air volume after being equipped with the specified filter. At the same time, confirm that the power supply, speed adjustment method, and power consumption meet the project requirements. In the end, the performance data and test results under the agreed working conditions shall prevail.

Clean room and equipment-side projects often ask 'how much air volume and static pressure are needed for 220V FFU'. These two parameters cannot be selected separately. The actual air supply volume of FFU is determined by fan performance,The resistance of the HEPA or ULPA filter is determined by the box structure and the airflow path after installation. Even if they are both powered by 220V and have the same dimensions,FFU , equipped with different filters or using different operating gears, may also obtain different working points.

Determine the target air volume first instead of directly using the maximum air volume

The project should determine the design air volume that a single FFU needs to bear based on the cleanliness target, air supply area, target wind speed and air flow organization. The 'maximum air volume' in the supplier's information usually corresponds to specific test conditions and cannot be directly regarded as the continuous air supply volume after installation.

When comparing products, you should be required to provide the air volume data under the specified power supply, designated filter and operating gear; for projects that require speed adjustment, you should also check whether the commonly used gears can stably achieve the target air volume.

Check static pressure and filter resistance at target air volume

The focus of the static pressure check is: when **FFU reaches the target air volume, how much ability it still has to overcome the resistance in the project. **The static pressure test location and conditions indicated in the performance data should be clarified, and the filter resistance, equipment end air inlet and outlet structure, and other related system resistance should be compared under the same working conditions.

After the filter is put into use, the resistance may change with the operating status. When selecting a filter material with higher filtration efficiency or changing the filter model, the working point of the FFU should also be rechecked. Comparing only two isolated figures of 'maximum static pressure' or 'maximum air volume' cannot prove that the equipment can simultaneously achieve the air volume and static pressure required by the project.

What electrical conditions need to be checked for 220V power supply?

After confirming that the project uses 220V power supply, you should also check the power frequency, rated power, current, starting method, protection requirements and speed adjustment interface required by the product nameplate. When installing in batches, the power supply load should be calculated based on the number of FFU and partitions, and the control method should be confirmed to be compatible with the on-site system.

For projects that require unified speed regulation and status monitoring, simultaneous planning can be done during the equipment selection stage.FFU group control system . The earlier the control plan is determined, the easier it is to unify the FFU operating gear, power supply partition and communication interface.

How does Aili Industry cooperate with 220V FFU project selection?

Aili Industrial can match the fan, motor, filter and box structure according to the installation size of the clean room or equipment, 220V power supply conditions, target air volume, filtration requirements and control needs. For batch projects, it is recommended to first check the performance, filter sealing, speed adjustment and maintenance space under the target air volume through a prototype, and then carry out complete machine or on-site testing in accordance with the technical agreement. The specific configuration and performance are subject to the results under the agreed working conditions of the project.

When consulting, it is recommended to provide target air volume or speed, filter rating, installation drawings, available space, power conditions, control methods and estimated quantities. If the system resistance or equipment end interface requirements are known, they should also be provided to facilitate accurate judgment of whether the air volume and static pressure can match.

Question: Is the higher the static pressure of the 220V FFU, the better?
Answer: The key is whether the available static pressure at the target air volume can meet the actual resistance, taking into account power consumption, noise and operating requirements.

Question: Two 220V FFUs have the same nominal air volume. Can they be directly interchanged?
Answer: Not necessarily. It is also necessary to compare the air volume and static pressure of the specified filter and operating gear, as well as the size, control interface and installation method.

Q: What data should I request from my suppliers?
Answer: It is recommended to obtain air volume and static pressure performance data, filter resistance data and electrical parameters indicating test conditions, and agree on a prototype or on-site verification method.