The noise of stainless steel ventilation pipe and its influence on the inner lining of silencing pipe. Decibel is the measurement of pipe length per foot, various shapes and sizes of Shandong ventilation pipes with and without lining, and various frequencies.

　　衰減與吸收系數有關，吸收系數與管道截面的大小有關，研究發(fā)現山東管道襯砌比其他任何已經提出的公式更接近Sivian理論得出的公式。該測量還通過連接到系統(tǒng)的5000cfm容量風扇的噪聲進行。我們發(fā)現噪音是由摩擦產生的。

　　The attenuation is related to the absorption coefficient, and the absorption coefficient is related to the size of the pipeline section. It is found that the formula of Shandong pipeline lining is closer to that of sivian theory than any other formula. The measurement is also carried out by noise from a 5000 CFM capacity fan connected to the system. We found that the noise was caused by friction.

　　對于高達每分鐘1500英尺的速度，空氣，無論是有內襯的還是沒有內襯的，與管道內壁的空氣相比是微不足道的，噪音是由風扇葉片產生的。在空氣阻力流動系統(tǒng)中引入了一種特殊的擋板結構，以測試噪聲的影響。用這種方法測定了有吸收劑襯里的管子與無襯里的管子的摩擦阻力。

　　For speeds up to 1500 feet per minute, air, both lined and unlined, is negligible compared to the air in the inside of the duct, and the noise is generated by the fan blades. A special baffle structure is introduced into the air resistance flow system to test the effect of noise. In this way, the friction resistance between the pipe with absorbent lining and the pipe without absorbent lining is measured.

　　當通風道與外風道并列時，可采用輪式換熱器。輪子的一半在一根管子里，一半在另一根管子里。

　　When the ventilation channel is parallel with the external air channel, the wheel type heat exchanger can be used. Half of the wheel is in one pipe, half in the other.

　　山東風道車輪轉動時，位于暖道內的車輪部件對多孔車輪結構進行加熱。冷卻管中的車輪部分從多孔的車輪結構中去除熱量。輪子也可以用干燥劑處理，這樣水也可以從一個流向另一個。

　　When the wheels of Shandong air duct rotate, the wheel components located in the warm channel heat the porous wheel structure. The wheel part of the cooling pipe removes heat from the porous wheel structure. Wheels can also be treated with desiccant so that water can flow from one to the other.

　　車輪沒有完全密封，車輪本身的體積從一個管道泄漏到另一個。因此，需要在流之間零轉移(交叉污染)的應用程序不能使用輪子。車輪需要并排和相同大小的管道，限制了許多應用程序所需的打包自由。但并非更不重要的是，輪子是帶有馬達、皮帶、滑輪、軸承等的主動移動機器，需要高度熟練的維修人員來保持輪子轉動。

　　The wheels are not completely sealed and the volume of the wheels themselves leaks from one pipe to another. Therefore, applications that require zero transfer (cross contamination) between flows cannot use wheels. Wheels require side-by-side and the same size of pipes, limiting the freedom of packaging required by many applications. Last but not least, the wheel is an active moving machine with motor, belt, pulley, bearing, etc., which requires highly skilled maintenance personnel to keep the wheel rotating.

　　以上是山東通風管道加工小編為大家介紹的相關內容，想要了解更多內容，歡迎訪問網站：http://www.adr7.cn

　　The above is the relevant content introduced by Shandong ventilation pipe processing section. For more information, please visit the website: http://www.adr7.cn