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[Solutions to the phenomenon of cooling tower noise disturbing people]
Release date:[2021/8/5] Is reading[240]次

The key noise of the cooling tower is caused by the motor and the cooling fan. Traditional cooling towers use silencers and set sound-proof enclosures for low-noise retrofitting. Another is to carry out the retrofitting of cooling tower turbines. The key to the noise of cooling towers comes from centrifugal fans and motors. There will be no, of course, the noise will be low.


Environmental protection, energy saving and noise control of civil cooling towers:

Reduce the energy consumption of the cooling tower, and install high-efficiency air ducts at the tower vents of the cooling tower. After the installation is completed, not only can the exhaust air volume be increased, but the gas pressure can also be relieved;


Since the centrifugal fan carried by the ultra-low noise cooling tower is a new type of equipment with wide blades and large chord length, its advantage is that it can have a higher working pressure index and flow coefficient. When our cooling tower fans are At low speed ratios, it can achieve higher air pressure through this technology.


Single-speed motors work under the condition of consuming electromagnetic energy. It is effective to change the motor speed ratio as the average temperature changes. The "variable torque and pole-changing variable speed" motor should be used to save energy consumption by more than 52% every year and reduce noise at night. 5dB(A);


Regarding noise problems: "Noise Regulations for Metropolitan Areas" have made clear provisions. The key to the noise of the cooling tower comes from the centrifugal fan, rain area, reducer, motor and support frame. The centrifugal fan noise belongs to the low frequency noise and the attenuation coefficient is not easy in the air, and the sprinkling noise belongs to the high frequency easy attenuation coefficient; the centrifugal fan leaf axial distortion selects an excellent hollow vortex design method to make the tip and standing area charge exceed the total flow of the root. The position difference of the sound source of the radiation source reduces the vortex noise and the widescreen noise of the wake.

Solution:

According to the noise regulations in different regions, the friction resistance and working pressure are measured for different types of cooling towers. After the heating experiment, various "professional centrifugal fans and motors" are selected.

Variable speed motors are used in areas with strict noise regulations.

You can set a silencer or block out the masking noise.

Set the "shrimp waist" at the vents of the cooling tower to direct the noise to the unaffected area.

Add a sound-absorbing mat at the bottom of the rain shower area to carry out "sprinkling" voice control to achieve the specified value of house noise.

Jincheng Air Conditioning focuses on:

Industrial air conditioners, chemical fiber industrial air conditioners, chemical fiber industrial refrigeration, textile industrial air conditioners, dust-free workshop refrigeration, ventilation ducts, cooling towers, refrigerators and other air-conditioning units and accessories.

Jiangsu Jincheng Air Conditioning Engineering Co., Ltd. is a comprehensive manufacturer specializing in the design, production, installation and commissioning of complete sets of air-conditioning equipment such as chemical fiber, textile, subway engineering, electronic factory clean room, electric power, tobacco, civil air defense engineering, medical clean room, etc. It mainly produces JCZK modular air conditioning units, cooling towers, glass fiber reinforced plastic ventilation ducts, galvanized steel ducts, stainless steel ducts, polyurethane ventilation ducts and air-conditioning accessories. Jincheng air conditioners are favored by users for their wide range of models, multiple models, unique products, and superior performance. Favor.


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