North American ceiling fan airflow testing system

1 依据标准: Appendix U To Subpart B OF Part 430 published July 25,2016

2 Testing method: By testing the wind speed at four points on the corresponding wind ring of the tested ceiling fan, the average wind speed of the wind ring is obtained, and then multiplied by the area of the wind ring to obtain the wind speed

Calculate the total air flow of the ceiling fan by adding up the air volume of all the air rings of the ceiling fan of this specification, and then divide this value by the test power consumption of the ceiling fan

Provide the energy efficiency ratio of the ceiling fan.

3 Test Room: 20 ± 0.75 feet (length) x 20 ± 0.75 feet (width) x 11 ± 0.75 feet (height), insulated with 50mm thick polystyrene

Board construction.

4 Laboratory environment: The entire testing process maintains a laboratory temperature of 21 °℃± 3 °℃, which is 70 °℉± 5 ℉, and a relative humidity of 50% ± 5%. from

The air outlet of the box is opened and controlled by a constant temperature and humidity air conditioner.

5 Test power supply: The variable frequency power supply used to power the test sample should meet the requirements of the testing standards for power supply, and the voltage fluctuation during the testing process should not exceed 19

6 Wind speed sampling rotation and lifting bracket: It can automatically rotate and be positioned in four directions, and the height of the bracket can be manually adjusted.