Energy Efficiency

Central College Weller Center Building Performance Study

The energy efficiency attributes of the building include daylight harvesting systems, occupancy sensors, a grid-tied photovoltaic system where the inverter is located in a classroom, a Variable Air Volume (VAV) heating, ventilating, and air conditioning system served from a central district heating and chiller plant, also new in 1999, all integrated with our campus's Johnson Controls Metasys building automation system . The Energy Resource Station (ERS) provided for the installation of supplemental sensors and energy monitoring equipment for energy data collection to monitor the actual energy performance of this building.

As we understand, this ERS Weller Center case study has 4 objectives:

1. To monitor and analyze the difference in lighting energy consumption between similar classrooms utilizing day lighting and occupancy controls with a reference classroom utilizing standard lighting controls.
2. To monitor and analyze the difference in heating and cooling energy due to the use of direct occupancy control strategies on the VAV system.
3. To determine the energy saving potential of the photovoltaic system.
4. To monitor the total energy use of the building. Both the total building energy consumption and selected space energy consumption are needed to determine energy savings due to these control strategies and designs.

The general work plan and activities would be coordinated through the Energy Resource Station, duties including insuring all sensors are calibrated and working to their design intent, checking for the correct collection and compilation of data through our building automation system which is currently integrated into the ERS through web access. Other duties would include analyzing the collected data, and producing technical reports about findings.

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