Key Steps for Centrifugal Fan Selection

To ensure quality selection, we must follow specific procedures when choosing explosion-proof centrifugal fans. First, calculate the required ventilation volume within the tunnel. Then determine the total thrust It, typically calculated using the formula It = △P × At (N). In this formula, At represents the tunnel's cross-sectional area in square meters (m²). △P denotes the sum of all resistance components in Pascal (Pa). Typically, the following factors must be considered during calculation: 1. Tunnel inlet and outlet resistance; 2. Friction resistance along the tunnel surface, plus resistance caused by the explosion-proof centrifugal fan unit, supports, and road signs; 3. Traffic resistance; 4. Resistance resulting from pressure differentials at tunnel entrances and exits due to variations in temperature, air pressure, and wind speed. Next, the overall layout plan for explosion-proof centrifugal fans must be determined based on the site environment. During this process, we need to roughly calculate the number of fans required along the entire tunnel length based on the tunnel's length, the total thrust required, and the thrust range provided by the jet fans. For example, assume a total of one fan group is required, with each group needing B units, and each fan providing thrust t. Note that the specific parameters of explosion-proof centrifugal fans must be determined. This step involves calculating the thrust generated by the fans. Typically, thrust data provided in fan performance parameters is based on measurements taken on test benches. The above outlines the primary steps for selecting explosion-proof centrifugal fan equipment, hoping to provide useful reference. We also hope you can purchase suitable explosion-proof centrifugal fans to successfully meet production requirements.