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可持续能源

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加热和冷却

UNC design standards require high efficiency centrifugal chillers, which use less energy to create one ton of cooling and releases fewer GHG emissions than other technologies. Recent installations include Butler Hancock, 校园娱乐 Center and New West Campus Residence Halls North and South. Installations are planned for Kepner, Carter, Guggenheim and Crabbe halls.

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Re-commissioned several building HVAC systems to optimize performance.

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 Upgraded the Heating Plant pumping arrangement to improve efficiency.

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Installed VFD’s on most pumps and cooling towers on campus.

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 Expanded the building 自动化系统 campus to control additional equipment and implemented additional night, weekend and holiday temperature set backs.

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 Replaced one of the original boilers at the Heating Plant with a new unit including economizer capabilities.

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 Pump coolant lines have been re-piped to recycle the water as condenser water rather than dumping the water down the drain.

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太阳能

UNC has invested in a small 10kw solar array on top of McKee Hall.  这个已经安装好了 fall of 2008 and the cost was offset with an Xcel energy rebate of 50 percent of the $100,000 cost and a Governors 能源 Office $10,000 grant.  In the last four years this system has generated 37,250 kWh of electricity without using any fossil fuels.

Learn more about the Parsons Grant Project

Check out our 能源 Performance Project

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Controllable Breaker Panels

UNC installed a BAS controlled breaker system at Michener 图书馆 in spring of 2009. These control the lighting circuits and turn off the lights in unoccupied conditions. Michener was originally designed without any light controls. 既然我们有能力 shut off the lights now it is projected to save ~ $40,000 annually.

LED Breezeway Lights At McKee Hall

UNC is currently installing new breezeway lights at McKee Hall. 这些是LED和 only use 54 watts compared to the 250-watt lamps that were being used. 储蓄 in energy costs plus rebates from our electric provider and reduced maintenance costs pays for the lights in just over 2 and ½ years and last for 10 years compared to the old style lasting 2 years.

Induction Lighting Retrofits on Central Campus

UNC has replaced all the walkway lights on Central Campus with induction type lights. By using this type of system over the high-pressure sodium style we cut the energy consumption by 65 percent. This savings, plus rebates from our electric provider, gave us a year-and-a-half simple payback on our investment.

Variable Frequency Drives

UNC utilizes variable frequency 驱动器 on most pumps and fans on campus. 这种技术 allows UNC to use only the amount of power needed to accomplish the task and backs off on the motor speed needed. This saves as much as 50 percent of the power over running the motors at full speed and extends the life of the equipment.

Premium Efficiency Motors

UNC uses only premium efficiency motors when replacing old motors and in new construction.  These motors have an average return on investment of two years.

Additional conservation projects

  • Occupancy sensors installed in classroom and other spaces, and most vending equipment is equipped with occupancy sensors to shut off the lights during unoccupied times.
  • Replaced more than 20 older refrigerators with more efficient energy star rated units with a grant from the Governors 能源 Office.
  • Most mechanical equipment now includes premium efficiency motors and variable frequency 驱动器.
  • Dining services has replaced most ovens with Rational Combi Ovens providing increased efficiency and energy savings due to reduced cooking time.
  • Most lighting on campus has been upgrades to more efficient lamp types such as compact fluorescent, induction and LED. Most incandescent lamps have been eliminated.
  • Exterior lights are controlled by a combination of photo sensors and the building 自动化系统.