The second working meeting of National Technical Committee for Fan Standardization in 2021

The second working meeting of National Technical Committee for Fan Standardization in 2021 was held in Chengdu, Sichuan Province on October 21, 2021.

At the meeting, two industrial standards were reviewed, which were respectively the draft for approval of the Limit Value and Energy Efficiency Grade of Ventilation Function for Coal Mine and the Limit Value and Energy Efficiency Evaluation Value of Roots Blower for General Use. Review the draft of one national standard, Determination of Sound Power Level of Industrial Fans under Laboratory Conditions Part 4: Sound Intensity Method. The project of the international standard ISO 13349:2010 Fans - Vocabulary and definitions of categories was reported. Ten industry standards were reviewed. The Outline of National Standardization Development was discussed.