Improving energy efficiency with the various control sequences for a VAV system through continuous commissioning®

This paper discusses the implementation of the innovative technologies for variable-air-volume (VAV) systems in a Continuous Commissioning (CC®). The implemented building is a 5-story office facility with a total floor area of 8472 square meters, most of which is open space. An energy audit was conducted to evaluate the building's energy performance and identify potential cost-effective energy saving opportunities. Specific CC® measures were implemented in the building. This paper presents procedures, implementations and detailed descriptions of control sequence and operation comparisons for the terminal boxes and air-handling units (AHUs), as well as the chilled water system and hot water system. The results show CC® can improve building operations and reduce energy costs. The energy report shows the electricity savings of 26.8% and gas savings of 47.8% on an average. Copyright © 2010 John Wiley & Sons, Ltd.