Improve your HVAC system and save money with PID control
Uncontrollable changes both inside and outside of a building can impact efforts to maintain a desired temperature. Changes in occupancy, lighting, computer-equipment and outdoor temperature cause the set temperature in a building to fluctuate constantly. Incorporating PID control with variable-speed drives results in HVAC systems that are more efficient and save money.
Proportional control provides the output capacity of HVAC equipment matching the load requirements of a building. Savings can be realized in three major areas:
Reducing dependence on throttling valves and dampers for the mechanical adjustment of airflow output saves on the maintenance of temperature-control equipment.
Open-loop control equipment cycles on and off constantly, causing a peak in-rush current during startup. Closed-loop controls used in PID save energy by providing continuous operation of AC motors at lower speeds.
Reducing pump and fan-motor speed reduces electricity costs.
For more information on PID control, email us at HVAC@us.Schneider-Electric.com.