What is the purpose of a damper in control systems?

The purpose of a damper in control systems is primarily to manage the flow of air within ductwork or through wall louvers. Dampers are mechanical devices that can be adjusted to restrict or allow airflow, helping to maintain desired environmental conditions, such as temperature and humidity, in heating, ventilation, and air conditioning (HVAC) systems. By controlling airflow, dampers contribute significantly to energy efficiency and comfort in buildings, as they can be opened or closed based on specific requirements or automated feedback from environmental sensors.

In many systems, particularly in HVAC applications, the proper adjustment of dampers ensures that adequate fresh air enters a space while also allowing for the efficient circulation and distribution of conditioned air. This control prevents the overuse of heating or cooling, ultimately saving energy and maintaining better indoor air quality.