The use of exhaust fans has become increasingly widespread, but consumers are most concerned about the air volume when purchasing fans, hoping that the larger the air volume, the better. So what mainly determines the air volume of a exhaust fan? It mainly depends on: speed, number of blades, blade angle, and blade blade chord length. When these four factors match each other, the optimal air volume can be achieved.
Speed: The speed of the fan directly affects the air volume, but it does not necessarily mean that the higher the speed, the greater the air volume. The change in rotational speed will affect the direction and speed of the airflow, thereby affecting the air volume. Excessive rotational speed may exacerbate disturbances in the internal flow field, thereby reducing efficiency.
Number of blades: The number of blades has a direct impact on the airflow. The increase or decrease in the number of blades will affect the performance and air volume of the fan.
Blade angle: The angle of the blades is also an important factor affecting the airflow. The adjustment of blade angle can change the direction and speed of airflow, thereby affecting the air volume.
Blade blade chord length: The chord length of the blade blade also affects the airflow, as it determines the amount of thrust that the blade can generate during rotation.
A exhaust fan with high air volume uses strong exhaust to remove indoor heat and odors, while introducing fresh air, achieving cooling, dehumidification, and improving air quality. In case of a fire, exhaust fans can also be used as smoke exhaust systems to reduce the harm of toxic gases to the human body. These functions and effects make exhaust fans play an important role in various environments and have been widely welcomed and trusted.
