Patent ID: 6715690
Filing Date: 2004-04-06
Classification: F24F,G05D

Abstract:
A method for controlling a Variable Air Volume (VAV) box in a VAV temperature control system, wherein the VAV box includes an airflow control damper, comprising:receiving a new airflow setpoint indication; determining if the new airflow setpoint is within a predetermined range of a current airflow setpoint; if the new airflow setpoint is within the predetermined range, then moving the damper for a first predicted damper runtime that is based at least in part on a sensitivity of the damper; and if the new airflow setpoint is not within the predetermined range, then moving the damper while taking substantially instantaneous airflow measurements until a measured airflow is within a second predetermined range of the new airflow setpoint, and moving the damper for a second predicted damper runtime that is based at least in part on a sensitivity of the damper.