稀缺小u女呦精品呦视频,香蕉婷婷,亚洲天天,大香蕉色一区二区

The selection and use of cooling fans for different devices depends on the device environment.

     Cooling fanThe advantages and disadvantages of different types are different. When using DC fans or AC fans, you can choose according to the actual situation. Fans are mainly selected according to the nature and different uses of the gas. The selected fan can not only meet the required air volume, but also overcome the resistance of the system and work in the highest efficiency or economic application range. Yi Rongchuan reminds you that you also need to pay attention to whether the material of the fan shell is flame retardant. Whether dust will pollute the environment.

In addition, the stability, durability and easy cleaning performance of the fan are also key factors affecting the use of the fan.

According to the nature of the transported gas, fans for different purposes can be selected. Ventilation is optional. Anti-corrosion fan shall be selected when transporting corrosive gas. When transporting flammable, explosive or dusty gases, explosion-proof or dust exhaust fans shall be selected. When it comes to fans, we must pay attention to the model and specification, which needs to be determined according to the performance or characteristic curve on the product model sample.