Mechanical Ventilation

Mechanical ventilation is the process of changing indoor air by withdrawing contaminated air and replacing it with fresh air from outside. There are three main methods for designing ventilation systems: equal velocity, velocity reduction, and equal friction. The equal velocity method selects the same air velocity throughout the system, velocity reduction uses variable velocities, and equal friction selects the same frictional resistance for all sections. Key components of mechanical ventilation systems include fans, filters, ductwork, diffusers, and fire dampers.