Final answer:
The process of introducing fresh air through the air handling system is known as 'air ventilation'. This is part of mechanical ventilation which helps maintain air quality by bringing in outdoor air to dilute and remove indoor pollutants.
Step-by-step explanation:
When fresh air is introduced through the air handling system, the process is referred to as air ventilation. This process involves the mechanical movement of outdoor air into a building, which is crucial for maintaining indoor air quality.
While air conditioning relates to controlling the temperature and humidity, air filtration is about removing particulates and contaminants from the air, and air circulation involves the movement of air within the space to prevent stagnation, air ventilation specifically refers to the fresh air that is brought into the environment.
Mechanical ventilation plays an important role in providing adequate air exchange rates to dilute and remove indoor pollutants and to control temperature and humidity, preventing the increase in pollutant concentrations that can occur when the building has low natural ventilation or infiltration.