The cooling tower is a kind of special equipment that uses water circulation to reduce the ambient temperature, so the noise is relatively large. Because there is no noise reduction treatment and sound absorption treatment during the assembly process, a type of noise pollution is caused to nearby residents. So it needs to be used for noise reduction treatment. The noise of the cooling tower mainly comes from the noise generated by the exhaust fan, falling water, and the vibration of the special equipment. There are many ways to reduce noise. Next, the editor of trlon will introduce to everyone the aspects of cooling tower noise reduction methods and the key origin of noise.
A. The origin of cooling tower noise
1. Noise of cooling tower fanThe key can be divided into the mechanical equipment noise of the cooling fan and the aerodynamic noise of the exhaust fan inlet and exhaust pipes, which are characterized by low frequency. The exhaust fan assembled above the cooling tower is mainly drawn out in the reverse direction to achieve the purpose of refrigeration.
2. Noise from falling water of cooling towerThe circulating water of the cooling tower flows down from the spray pipe above, and the collision noise will be generated according to the free fall, which is proportional to the square of the falling water speed and inversely proportional to the fourth power of the collision water.
3. Noise from cooling towerThe key to the noise of cooling tower machinery and equipment comes from the vibration of machinery and equipment parts. The parts of machinery and equipment will be elastically deformed during work, and then vibrate. When the elastic mechanical parts transmit vibration energy to the radiating surface, they will spread out according to the air and generate mechanical equipment noise.
The concrete implementation plan is
B. Cooling tower noise reduction treatment method1. : the air-borne noise control method, based on the in-depth analysis and mastery of the noise source of the air-conditioning unit, combined with the specific working conditions of the construction site and the in-depth analysis of the residential buildings confused by the noise. The design concept uses insulation and sound-absorbing panels around the central air-conditioning unit to carry out sound insulation management. Make the air inlet on the side of the central air conditioning unit to ensure the air consumption demand of the refrigeration unit during operation.
Cooling tower sound insulation wall
2. : The sound insulation barrier of the air conditioning unit is a kind of effective special equipment used to block the noise transmission outside the air conditioner, and belongs to the technical means of controlling the noise outside the air conditioning unit. Air-conditioning unit sound barriers often use metal galvanized sheets as sound barriers. The louver hole is punched on the front plate of the screen body, and the sound wave hits the sound barrier and sinks into the hole. But there is silencer cotton inside the board, so it is not easy for noise to get out.
Sound insulation and anti-noise
3. : It uses the enclosure structure to confine the sound in the soundproof room, so as to isolate the sound wave and attenuate the coefficient. Although the noise in the soundproof room is loud, the external noise is much smaller. The key controls the noise of the compressor and pump body, and the transmission noise of the exhaust fan.
4. : Assemble air inlet and outlet silencers at the inlet and vents of the central air conditioning unit. The silencer tip is assembled in the silencer to achieve the purpose of silencer.
The design concept of soundproof door
5. : After the soundproof cover is assembled, in order to facilitate the inspection of equipment and simple maintenance. Design and assemble a soundproof door at a suitable place on the side of the existing soundproof cover. The soundproof door needs to be determined according to the construction site, while avoiding noise radiation to the vicinity.
Trlon is a cooling tower manufacturer specializing in the development and production of energy-saving products for central air conditioning cooling towers. Teling deals in central air conditioning equipment, various cooling towers and cooling tower noise reduction projects. Teling air-conditioning design uses American technology patents and proprietary solutions, introduces advanced foreign energy-saving technologies, and adopts advanced TPM, ERP and other management systems to ensure the excellent quality and ultra-high performance of the products.
Guangdong Trlon Energy-saving Air Conditioning Equipment Co., Ltd.
Company Address： 1916A, Block A, David Donglong Business Building, Longhua, Longhua District, Shenzhen