Continuous Commissioning® of an airport rental car facility
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This paper presents the Continuous Commissioning®1 (CC®) of a rental car facility at a major airport. The CC process was carried out by highly skilled engineers who quickly zeroed in on sub-optimal operating strategies that waste energy, and developed and implemented optimal control strategies which in this case include improving the zone temperature control; resetting supply air temperature and duct static pressure; reducing excessive outside air flow, adjusting the terminal box air flow settings, improving the economizer cycle control; modifying the return air fan control algorithm; and optimizing the chiller plant operation. The whole process was carried out in less than four months. Analysis shows that annual energy cost savings are $106,000, or 18% of the whole building utility consumption, giving a payback of approximately one year on total project cost.