What is the appropriate placement and operation for auxiliary fans?

The appropriate placement and operation for auxiliary fans should focus on avoiding the recirculation of air at any time. This is critical in maintaining a safe working environment, especially in mining operations where air quality can significantly affect the health and safety of workers. By preventing recirculation, fresh air can continuously flow into the working areas, helping to dilute any harmful gases or particles that may be present.

Auxiliary fans serve to enhance ventilation systems, particularly in locations where natural airflow may not be sufficient. Effective air circulation is essential, but it must be managed in such a way that it does not lead to the same air being reused repeatedly. Maintaining a steady supply of fresh air also assists in controlling temperature and humidity levels in enclosed spaces, which is vital for worker comfort and safety.

While maximizing air circulation and managing airflow directions are important considerations, they should not come at the expense of recirculating stale air, which can lead to hazardous conditions. Therefore, the focus on avoiding air recirculation aligns with the primary objective of auxiliary fans in enhancing mine ventilation effectively.