Login
The present paper investigates, both experimentally and by simulation, the influence of faulty VAV units that do not affect the zone temperature on total energy consumption of a VAV system. In an experimental room, the respective total energy consumptions of both normal operation and faulty operation were measured. The results indicate that a faulty unit affects other normal units, causing an energy waste of approximately 20-50%. In addition, the present paper also discusses whether the additional energy consumption can be calculated via the simulation of the VAV system in the experimental room. The results indicate that the simulation can be used to estimate the additional energy consumption caused by the faults.