Datacenter migration, how to reduce generator noise reduction

Datacenter migration, the principle of noise reduction in generator room by the noise processing company of generator set. The principle of reducing noise in diesel engine room is to ensure the ventilation condition of diesel generating set, without reducing the output power, using high efficiency sound absorbing material and noise reduction device to enter, exhaust air passage and exhaust system. The noise reduction is processed to make the noise emission meet the national standard (85dB (a)).

The most fundamental way to reduce the noise of the generator is to start from the sound source and adopt some conventional techniques to reduce the noise. Such as muffler, sound insulation, sound absorption and vibration isolation are the most effective methods.
1, reduce the exhaust noise. Exhaust noise is the most important noise source of the unit. Its characteristics are high noise level, fast exhaust speed and difficult management. The exhaust noise can be reduced by 40-60db (a) by using a special impedance muffler.
2, reduce the noise of axial fan. In order to reduce the noise of cooling fan, two problems must be considered, one is the allowable pressure loss of exhaust passage. Two is the required amount of noise. In view of the above two points, the resistive silencer can be selected.
3. Sound insulation, sound absorption and vibration isolation of the machine room
(1) sound insulation in the machine room. After the exhaust noise of the unit and the noise of the cooling fan are reduced, the main noise source remaining is the mechanical noise and combustion noise of the diesel engine. The method used is to remove the other windows except the necessary observation window which is connected with the observation room. All the holes and holes should be closed tightly. The sound insulation of the wall of the brick wall requires more than 40dB (a). Doors and windows of the machine room are fireproof and sound insulation doors and windows.
(2), air intake and exhaust air. After the sound insulation is processed, the ventilation and heat dissipation in the computer room should be solved. The air inlet should be installed on the same straight line with the generator set and the exhaust port. The inlet of the air inlet should be equipped with a hindrance muffler. Because the pressure loss of the inlet is also within the allowable range, the air volume in the machine room can be balanced naturally and the effect of ventilation and heat dissipation is obvious.
(3) sound absorption. The five walls except the ground in the engine room can be processed by sound absorption. According to the spectrum characteristics of the generating set, the perforated panel resonance sound absorption structure is adopted.
(4) the exchange of indoor air and sound insulation of the machine room will make the air in the room without convection when the closed water cooled generator is shut down, and the high temperature in the room can not be reduced in time. The problem can be solved by using the low noise axial fan and the hindrance muffler.
(5) the vibration isolation of the unit. Before the installation of the generator set, the vibration isolation treatment should be carried out strictly according to the relevant information provided by the manufacturer, so as to avoid the long distance transmission of structural sound and the continuous radiation of air in the transmission, so the noise level of the factory can not reach the standard. The vibration of the ground near the unit must be measured. If the vibration sense is obvious, it is necessary to carry out the vibration isolation treatment of the generator unit.
As a result, it can be seen that, after effective noise reduction, in order to make the room more beautiful and practical, it is usually decorated with microporous aluminum plastic punching plate outside the sound absorbing layer of the wall and the ceiling. At the same time, the lighting system is reasonably configured. So as to effectively reduce the noise of the computer room, and achieve a good noise reduction effect.