How to reduce noise ?
1. System Impedance – Higher airflow will create higher noise level. Likewise, the higher system impedance created by the system, the higher airflow is required in order to achieve the cooling effect. That is, users need to reduce the system impedance as low as possible in order to achieve the least noise of airflow. 2. Flow Disturbance – The turbulent air generated by the obstructions along the path of airflow will raise the system noise. Therefore, users have to avoid any obstructions in the critical inlet and outlet area as much as possible. 3. Fan Speed – As you know, a higher speed fan will generate greater noise compared to a low speed fan. Users have to try their best to choose a lower speed fan as much as possible. 4. Fan Size – A larger size fan will generate a much lower noise level then a smaller size fan does while creating the same airflow. Users shall try to use larger fan with lower speed if space is allowed. 5. Temperature Rise – Airflow is inversely proportional relate
