Retro-Commissioning (Rx) uses hourly measured data from the building Energy Information System (EIS), obtained either from existing controls system or from stand-alone metering, to optimize the energy use of the building as it is actually operated. In the Rx process, systems are balanced, valves are checked for proper operation, and control systems are optimized for energy reduction. After installation of all projects the Rx team will evaluate the performance of the building and balance building pressurization, temperatures and air flow throughout the facility to optimize the interactive effects of all building systems. Additionally, this project includes installation of electric shades at the public entrance atrium of the building as well as window tinting on the West side, second story of the Courts building.
Facilities: City Hall, Courts/Police Building
Power Save® computer energy management software will be installed, which provides the system administrator with enterprise-wide control over advanced computer power configurations; allows for computers to hibernate based on CPU usage, disk activity and application activity; and generates a detailed report outlining City-wide energy consumption levels and associated cost savings.
A web platform will be published that provides an interactive means of accessing the City Digital Controls System (DDC) from any computer with web access. The system provides a portal into all HVAC systems tied into the DDC, including: Rooftop and Split System ACs, Boilers, Chillers, Pumps, Fans, Water Heaters, etc. Depending on the custom defined security access level of the user, facility personnel can view the operation, command, and status of the equipment as well as update and modify operational schedules and setpoints. Utility metering at many of the higher energy consuming sites, as selected by the City, provide real-time monitoring of utility consumption at each meter, providing the ability to monitor and track utility trends, and identify additional functional and behavioral opportunities to control utility spending. Access to whole building electric interval data provides much more information than monthly bills alone. The resulting load profiles show peaks and high use times which can often be used to explain high energy cost. Beyond the energy and maintenance aspects of the system, studies have shown that access to this information and active management of an overall energy strategy results in an increased awareness of the various factors that affect energy usage, which can lead to significant reductions in overall facility energy usage. As a further benefit, this visibility can also instill competition between departments and energy users, and help foster a culture of energy awareness.