Beijing Guotai Liangyou Engineering Technology Co., Ltd. is a specialized enterprise specializing in acoustic sound insulation design, acoustic sound insulation decoration and noise control projects
1. Use mufflers
The use of mufflers in noise reduction measures for air conditioning units on the roof of shopping malls can effectively reduce noise and allow air flow to pass smoothly. The function of the muffler is mainly to control air conditioning units. The noise from air conditioning equipment is transmitted to the air conditioning service area through ventilation ducts. And the air flow noise in the air duct, the sounder is the most common noise reduction equipment in the air conditioning system.
2. Install vibration damping devices
Noise reduction of air conditioning units on the roof of shopping malls. In order to effectively eliminate noise and vibration, spring dampers should be added to the rigid brackets to adjust the pipe diameter. This method is often used for large and slightly vibrating chilled water main pipelines in order to effectively control the noise in the spring damper between the floor and the rigid support.
3. Air duct installation
In the noise reduction of the air conditioning unit on the roof of the shopping mall, muffler louvers are used at the fresh air inlet of the air conditioner, and impedance mufflers are installed at the fan inlet and outlet. For air ducts with larger cross-sectional areas, rubber damping pads should be used as much as possible for the air duct hangers to ensure that the air duct does not produce vibration noise. If the installation strength and overall stiffness of the air duct are insufficient, friction and vibration noise will occur.