• Noise generated from air-cooled chillers may cause disturbance to nearby residents (see Figure 3). It mainly comes from the air flow noise resulting from air turbulence at condenser caused by the blowers and compressor noise during running and on/off compression cycle of refrigerant.
• Vibration from an air-cooled chiller’s operation may be transmitted through building structure at points where the chiller is connected to the structure. The situation could be particularly worse when it is rigidly fixed to the structure without proper isolation (see Figure 4). The vibration transmitted may activate the building structure to generate noise which causes noise disturbance to residents inside the building.
• Fabricate a complete enclosure with silencers at condenser fan outlets and at air inlets of the enclosure (see Figure 6) so as to contain and absorb the noise from the chiller when there are noise sensitive receivers all around.
• Install floating floor (see Figure 6) so as to reduce air-borne noise transmission through floor slab when the floor underneath is a noise sensitive receiver.
(Noise Reduction Up to 30 dB(A))
• Provide vibration isolators to support an air-cooled chiller (see Figure 7), thereby isolating it from the building structure.
(Noise Reduction Up to 20 dB(A))