The importance of volume flow measurements to air quality and operating costs has been underestimated for many years. Yet there is now a growing recognition that excessive volume flow in air conditioning and process air systems sends operating costs spiraling upwards. Not only do ventilator fans consume extra energy in moving the surplus air around the system but expensive air conditioning processes (cooling, heating, humidifying or dehumidifying) generate further costs by treating unnecessarily large volumes of air.
Operators and planners have recognized that too little volume flow also creates problems as it results in an inadequate air supply. Moreover, an insufficient volume flow can also lead to hygiene problems – from oxygen deficiency for humans to accelerating bacterial growth in moist, slow-moving air during production processes.