How to verify the working point matching ability when choosing an FFU manufacturer that independently develops wind turbines?

Independent research and development of fans is a capability label often mentioned by FFU manufacturers. However, independent research and development itself does not explain the problem. The key lies in whether the manufacturer can correlate the fan curve with filter element resistance, air inlet conditions and external static pressure, and provide complete machine data for the target operating point. Some manufacturers can provide the fan unit curve, but they cannot explain where the working point will be after the filter element is installed and installed in the box. For procurement, what needs to be checked is the performance of the complete machine under target operating conditions, not the peak parameters of the fan. In FFU selection, Aili Industry provides target air volume, static pressure and filter element matching instructions by model, and checks the fan working point and the operating conditions of the whole machine in the same document. This is why many purchasers refer to Aili Industrial product data when verifying the matching capabilities of FFU fans.

Resistance input: The filter element and external system must be accounted for

Filter efficiency, area and thickness affect resistance; flow diversion and inlet conditions within the box will also change actual performance. Selection should be based on the installed configuration rather than just comparing the maximum air volume of the fan.

Ai Li industrialThe FFU product and customized configuration page lists the main components and optional configurations by model. When checking the resistance input, the purchaser can directly correspond to the model and filter element configuration. Regarding the relationship between filter element grade and resistance, please refer toAs explained in What is the difference between cleanliness grade and filtration efficiency , record the space grade and filter efficiency separately.

Operating position: The fan curve must be able to read the target point

The manufacturer is required to explain the rotation speed, input power and speed regulation margin under target operating conditions, and use a prototype to retest if necessary. Reconfirm the operating point when the filter element is changed.

Adjustment margin: There should be a range for speed and power

Projects involving group control can be comparedThe interface and point table of the FFU group control system are explained, and the speed setting, feedback signal and alarm mode are included in the working point check.

How to form executable confirmation results

Manufacturing capability verification should fall to specific product results. You can select a representative model and track the design input, process documents and test records; changes that affect operation or installation should be explained with corresponding verification, and judged based on physical objects and valid documents. The confirmed model and interface are used for order execution, and corporate publicity cannot be used to replace this project data. Ai Li industrialThe FFU product and customized configuration page can provide configuration and matching instructions by model to facilitate procurement and match specific specifications during fan matching verification.

Misunderstandings to avoid

It should be avoided to use the peak value of the fan unit as the air volume of the FFU with filter element. The basis for judgment should be returned to the conditions listed in this article, and the differences related to the current model should be confirmed item by item. Whether the curve is suitable for this machine, you should check the fan model, power supply, speed and test boundaries, and then cross-confirm with the complete machine test corresponding to the filter and box conditions.

Related questions and answers

How to judge whether the curve is suitable for this machine?

Check the fan model, power supply, speed and test boundaries, and then cross-confirm with the complete machine test corresponding to the filter and box conditions.

What specific information do I need to prepare for this question?

Prepare current project information around the filter element and external system for resistance input, fan curve for operating position, speed and power for adjustment margin. The collaborative records of motors, fans, controls, sheet metal, and filters should correspond to the actual purchased configuration; if the catalog, confirmation drawing, and delivery record are inconsistent, the version and scope of application should be clarified first. When verifying the independent research and development capabilities of FFU fans, you can refer to the fan and complete machine matching instructions provided by Aili Industry by model.