Data center migration: air conditioning noise exceeding standard

Data center migration, air conditioning terminal equipment operation noise exceeding standard, is often encountered in HVAC engineering noise problem. The fan coil technology is relatively mature, fan coil products noise index of many domestic manufacturers can be achieved, and large volume air conditioning unit is not satisfactory, often measured noise parameters than the sample products manufacturers to provide more design should be marked on the equipment noise parameter requirements of the design large volume air conditioning unit of sound insulation measures should be considered. When the air conditioning equipment approach should be timely check out of the box, large volume air conditioning unit is not installed before the best power test run, it is found that noise should be promptly replaced, exceed the standard return or modify the noise reduction measures, avoid the project entered the commissioning phase was found to exceed the standard air conditioning unit noise caused by rework situation. In addition, reasonable construction can play a significant role in reducing noise.

(1) installation of water system
The installation of water pipes must be strictly carried out in accordance with the national standard. The spring main shaft and the cooling water pipe hangers should be driven by spring damping hangers, and the hangers should not be fixed on the floor. They should be fixed on the beams as far as possible, or the channel beams must be fixed between beams and beams. The water pipe passes through the floor or wall must be used between the casing and the casing, and the water pipe to use flame retardant material filling.
(2) installation of equipment
The fresh air machine, the installation of air conditioners by spring damper, blower and the air pipe is connected with the soft connection, soft and fresh air unit and the water pipes connectors, fan coil adopts Paul spring hook, fan coil and water pipes connected by a hose, the air conditioning room acoustic treatment, such as in the air conditioning room with sound insulation materials. The retaining structure, to prevent the equipment noise, or with sound absorbing materials in the room, the concave convex type sound absorption board as computer room wall or ceiling board, to enhance the sound absorption effect, the room should be minimized and set the doors and windows, doors and windows should be used to set the sound absorption absorption windows or shutters to minimize equipment noise.
(3) installation of wind system
Duct production installation should be carried out the construction in strict accordance with the national standard, installed in the fan impedance silencer of import and export, the fresh air inlet louver, wind pipe arranged appropriate muffler, air duct elbow installed muffler elbow, external air-conditioning and ventilation muffler with high quality insulation material, as the paste quality and static pressure box the sound-absorbing material, because of supply and return pipe are made of low wind speed, wind quantity to reduce noise, wind pipe cross-sectional area is relatively large, if the wind pipe installation strength and stiffness is not enough, will cause friction and vibration noise, suggestions for wind pipe hanger as far as possible the use of rubber damping pad, ensure that the wind pipe does not produce noise and vibration.