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Cooling tower noise control primarily involves fan noise treatment, noise control, pump noise treatment, and vibration pollution control.
The cooling tower generates significant noise pollution during operation, adversely affecting the living and working environments of residents. The noise sources of the cooling tower consist of the following components:
1. Fan intake and exhaust noise
2. Sprinkling noise
3. Fan speed reducers and noise
4. Cooling tower pump, piping, and valve noise.
The primary noise sources are the intake and exhaust noise of the fan, as well as the spray noise. The fan radiates noise through its intake and exhaust ports and the tower body. The exhaust port noise is 5-10dB(A) higher than the intake port noise, with a frequency spectrum predominantly consisting of low-frequency continuous sound. The spray noise produced when the recirculating hot water falls from the spray device and impacts the accumulated water in the bottom collecting tray is a high-frequency noise. The intensity of the spray noise is related to the spray height and the flow rate per unit time.
Hangzhou Su Tai's years of engineering experience conclude: The overall noise level of the cooling tower is around 85 dB(A).
The primary pathways for noise transmission are through air and solid transmission.
