How to reasonably construct and reduce noise of high-precision constant temperature and humidity air conditioners?
① In order to better control the air supply noise of fan coil units, high-precision constant temperature and humidity air conditioners should increase the air outlet area and reduce wind speed.
② Installation of high-precision constant temperature and humidity air conditioner chilled water pipe main bracket: In order to effectively eliminate noise and vibration, spring shock absorbers should be added to the rigid bracket. This method is often used for chilled water main pipes with large pipe diameters and slight vibrations, so that the noise of the spring shock absorber between the floor and the rigid bracket can be effectively controlled.
③ Installation of high-precision constant temperature and humidity air conditioner ducts: The production and installation of ducts must strictly follow national standards for construction. The air conditioner and fresh air silencer are the same as the static pressure box. High-quality sound-absorbing materials are pasted inside, and high-quality thermal insulation materials are used for insulation outside. Silencers are set at the elbows of the ducts, and silencers are set at appropriate parts of the ducts. The production and installation of ducts must strictly follow national standards for construction. Silencers are used for the fresh air inlet, and impedance silencers are installed at the inlet and outlet of the fan. For ducts with larger cross-sectional areas, rubber vibration-damping pads should be used for duct hangers as much as possible to ensure that the ducts do not generate vibration noise. If the duct installation strength and overall rigidity are not enough, friction and vibration noise will be generated.
④ Installation of high-precision constant temperature and humidity air conditioning water pipes: Water pipe installation must strictly comply with national standards. The hangers cannot be fixed on the floor slab and should be fixed on the beam as much as possible. Spring vibration-damping hangers should be used for the chilled water main pipe and cooling water pipe hangers. Water pipes passing through the floor slab or the wall must be sleeved and sealed with non-combustible materials.
⑤ Installation of high-precision constant temperature and humidity air conditioning equipment: Fresh air and air conditioners are installed with damping spring shock absorbers, fan coils are installed with spring hooks, fan coils are connected to water pipes with hoses, fans are connected to air ducts with soft connections, and fresh air fans are connected to water pipes with soft joints. Sound-absorbing treatment is carried out in the air-conditioning room to prevent the transmission of equipment noise. For example, sound-insulating materials are used to make the enclosure structure in the air-conditioning room. In order to enhance the sound absorption effect, concave-convex three-dimensional sound-absorbing panels can also be used as the walls or ceiling panels of the room. Sound-absorbing materials are pasted in the room. The room should also minimize doors and windows to minimize the transmission of equipment noise. The doors and windows used should also be sound-absorbing windows or sound-absorbing blinds.