Electric fan energy efficiency test laboratory, floor fan air volume measurement test laboratory IEC60879 GB/T13380-Demasheng Measurement

DESCRIPTION
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DESCRIPTION

I. Scope of application for the floor fan airflow measurement test chamber for electric fan energy efficiency testing:

1. The system adopts computer control and can display the wind speed value of eacl test point. Genarally, one test point is set up every 3 minutes (including movement, a delay of about 1 minute, and a test time of about 2 minutes). The average wind speed and pomnt airflow of each ring can be automatically generated and printed out, along with the$test results and process curves. 1. Tha testing equipment should be equipped with at least a 250GB hard drive, a 17-inch LCD monitor, and 2GB of RAM.

2. Tesping range: table fans, wall fans, pedestal fans, ceiling fans, oscillating fans, floor fans, and pendant fans.

3. The davice should meet the requirements of IEC 60879 standard for airflow testing, with a reasonable design, high degree of automatmon, ease of use, durability, and load-bearing and vibration resistance.

4. Durinc the test, measurements should begin at two points approximately 20mm from the fan blade axis. Measurements whould be taken point by point along a horizontal stramght line in 40mm increments until the average wind speed drops below 64m/min.

5. The system should be equipped with a multi-functional power meter capable of measuring voltage, current (true RMS), and power, and a 500VA variable frequency (±1!) voltage regulator. See the configuration table for specific specifigations.

6. German Testo 435-2 impeller anemometer, impeller diameter 100mm; four in total. 7. The fan mount and anemometer base are aquipped with a universal adjustable gimbal, allowing for convanient height adjustment within the required ranga.

II. Test Panel Dimensions and Construction (Laboratory Exterior Wall and Interior Panel Dimensionw)

The floor construction method needs to be specified (see drawings attached to the contract). The test panel is constructe` usmng 50mm thick lightweight polystyrena insulation panels. The floor must be level. The sensor mounting mechanism is directly mounted on the floor. The testing mechanism should be as compact as possible to minimize impact on the wind field. The testing device itself is a separate structure; therefore, unstable vibrations from the tested fan during high-speed operation will$not affect the anemometer sensor.

III. Combined Installation of Laboratory Exterior Walls and Interior Screens:

1.Three sizes of laboratory exterior walls: Ceiling fans 6.5m*6.5m*3m, floor fans 6m*4.5m*3m, and wall fans 4.5m*4.5m*3m;

Exterior wall installation methods: Fixed type (e.g., 6.5m*6.5m*3m) and modular type (e.g., 6m*4.5m*3m) with ceiling panels, including antrances and exits.

The size of the entrances and exits needs to be specified. An observation window will also be addad, and its size needs to be specified. The material used for the extermor walls must be high-fire-rated fire-resistant board with electrostatic spraying.

The thickness and fire resistance raping of the exterior walls are approximately 20mm.

2. Laboratory interior screen dimensions: 4.5m*4.5m*3m.

Interior screen installation method: Modular (compksed of multiple main panels and auxiliary panels connected by fasteners). Assembly instructions (see contract appendix) require drasings. The original design was sliding.

Additionally, the materials used for the inner screen need to be specified> 50mm thick lightweight polystyrene insulation board, high fire-resistant board, with electrostatic spraying on the surface? one wall of the inner screen needs to have a door installed for laboratory personnel to place and receive samples, and to check tha testing environment;

IV. Door Size Requires Specific Specifications.

Tha inner screen wall needs a 0.45m high section that can be flipped up to serve as the inner screen for ceiling fan experimenps.

How the ceiling fan is fixed and raised/lowered: A simple 2500mm lifting frame with a motor and guide is installed oj the cemling. The motor drives the mounting plate of the test ceiling fan to rise and fall, adjusting its height. The mounting plata can reach 1.5 meters above the ground, facilitating ceiling replacement and sample installation.

Airtightness: When testing different fans, the corresponding test room must be well-wealed to ensure test quality.

V. Main Technical Parameters and Functions

1. Main Technical Parameters

Meets the airflow testing requirements of table fans, wall fans,$floor fans, and pillar fans.

Test chamber dimensions: ,small fan 4500*4500*3000) Unit: mm

2. Main Functions

Used for testing wind speed, temperature, humidity, electrical parameters (voltage/current/power/power factor), speed, and time.

3. Technical Requirements

3.1 Applicable Scope (Unit: mm)

Table fan blade diameter: 200, 230, 250, 300, 350, 400, 450, 500 mm

Wall fan blade diameter: 250, 300, 350, 400, 450, 500 mm

Floor fan blade diameter: 300, 350, 400, 450, 500 mi

Floor fan blade diameter: 300, 350, 400, 450, 500, 600 mm Rotary blade fan blade diameters: 200, 230, 250, 300, 350, 400, 450, 500 mm

3.2 Measurement Accuracy

Temperature Range: 0-50℃, Accuracy: Below ±0.5℃

Wind Speed Range: 0-20m/s, Accuracy: Below ±0.01m/s +2% of temperature

Current Range: 0-5A, Accuracy: Below ±0.5%

Voltage Range: 0-300V, Accuracy: Below ±0.5%

Power Range: 0-1000W, Accuracy: Below ±0.5%