An industrial fan refers to the technology and industrial process used to renew air in factories: evacuating polluted indoor air and injecting "clean" outdoor air. One of the objectives is to treat and regulate the air for the health and safety of plant workers. The operating principle remains the same, but the system is adapted to the needs of each building. There are two main types of ventilation technologies: local exhaust ventilation and general ventilation, also called dilution ventilation. Whichever technology you choose, one of the basic principles of ventilation is to update the same amount of air. It is therefore necessary to continuously and fluidically compensate the polluted air discharged by ventilation by inhaling healthy air to avoid as much as possible the pressure difference between the ventilation chamber and the outside. Including adjacent rooms. It is also necessary to avoid draughts or anything that may cause thermal discomfort to workers.(1) We talk about Energy, air & water on our blog section.