GB 50243-2016 第6.3.5条
| **** | Flexible short ducts shall be installed at the connections between air ducts and equipment such as fans and air handling units, with a length of 150–300 mm, and shall not be used as reducing connection ducts for alignment or leveling. **(In hotel equipment rooms, this provides vibration damping and noise reduction, preventing equipment vibration from being transmitted to the duct system.)** |