On the distribution of air volume in dust removal fans

Regarding the dust removal and air flow design issues in the factory buildings you described, the following aspects can be considered: 1. **Pressure difference control**: During design, a relative positive pressure can be maintained inside each workshop, so that air flowing from areas with lower pollution levels to those with higher pollution levels can help prevent dust from spreading to cleaner areas. 2. **Air volume and wind speed design**: Ensure sufficient air volume and appropriate wind speed to effectively capture and transport dust particles in the air. The calculation of air volume requires taking into account the volume of the workshop, the dust generation rate, and the air change rate. 3. **Location of the fan and air outlets**: The placement of the fan and the location of the air outlets should be optimized based on the specific layout of the workshop and the locations of the work areas. Ideally, the fan should be located upstream of the source of pollution, with the outlet close to the pollution source, while the inlet should be placed at the other end of the workshop. 4. **Air filtration and purification**: In addition to physical isolation and air volume control, filters and air purification devices such as HEPA filters can be installed in the air circulation system to further reduce the spread of dust and other pollutants. 5. **Automatic door control system**: The use of fast-opening and closing doors is also crucial; automatic sensors can be installed to reduce the time it takes for the doors to open, thereby minimizing unnecessary air exchange. During design, the energy efficiency and ease of maintenance of the system should also be taken into account to ensure its sustainable operation and cost control for maintenance. It is possible to consult a professional HVAC (heating, ventilation, and air conditioning) engineer for a more precise system design and adjustment. .