Guidelines for the Construction of Industrial Fan Airflow Laboratory: Analysis of the Whole Process from Layout to Certification

　　Industrial Fan Airflow LaboratoryIt is the core infrastructure for wind turbine performance testing, energy efficiency verification, and product development, and its construction quality directly affects the accuracy of test data. A compliant and efficient laboratory needs to go through multiple key stages, including scientific planning, standard compliance, equipment selection, system integration, and qualification certification.

Step 1: Clarify testing requirements and standard basis

Before construction, the type of fan (centrifugal, axial flow, diagonal flow, etc.), size range, air volume/pressure range for laboratory services should be determined, and applicable standards such as internationally recognized AMCA 210, ISO 5801, or domestic standard GB/T 1236 should be selected. Different standards have specific requirements for testing devices (chamber method, duct method, or nozzle method), which directly affect the subsequent layout.

Step 2: Reasonably plan the layout of the laboratory

Laboratories typically include an intake section, a testing section, an auxiliary equipment area, and a control room. To reduce eddy currents and turbulence, the air inlet should be at least 1.5 times the diameter of the pipeline away from the wall, and the length of the straight pipe section should meet the rectification requirements specified in the standard (usually ≥ 6D). At the same time, sufficient space should be reserved for installing flow measurement devices (such as multi nozzle chambers or pitot tube arrays), pressure sensors, and variable frequency drive systems. Noise and vibration isolation also need to be included in the design to avoid environmental interference.

Step 3: Core equipment selection and system integration

The key equipment includes high-precision pressure/differential pressure transmitters, temperature and humidity sensors, data acquisition systems (DAQ), flow calibration devices, and auxiliary fans. It is recommended to use sensors that comply with NIST or national metrology standards, and integrate automated testing software to achieve one click startup, data recording, and automatic generation of performance curves.

Step 4: Debugging, Verification, and Uncertainty Assessment

After completion, system debugging is required to verify repeatability and reproducibility through comparative testing using standard fans or known performance prototypes. At the same time, measurement uncertainty analysis is conducted in accordance with ISO/IEC Guide 98-3 (GUM) to ensure that the extended uncertainty of key parameters such as wind volume and static pressure efficiency meets certification requirements (usually ≤ 2%).

Step 5: Apply for third-party certification

If used for product certification or external testing, it is necessary to apply for laboratory accreditation from institutions such as CNAS (China National Accreditation Service for Conformity Assessment). The key to successfully passing the review is to prepare complete quality management system documents, personnel qualification certificates, equipment calibration certificates, and typical test reports.

In short,Industrial Fan Airflow LaboratoryConstruction is a systematic project that requires consideration of technical specifications, engineering practices, and quality management. Scientific planning and strict verification are necessary to create an authoritative, reliable, and sustainable testing platform.