| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 50.16 |
| Liaison | Elaine Durr |
| Submission Date | Nov. 9, 2015 |
| Executive Letter | Download |
Elon University
OP-8: Building Energy Consumption
| Status | Score | Responsible Party |
|---|---|---|
|
2.75 / 6.00 |
David
Webb Facility Engineer Physical Plant |
Total building energy consumption, all sources (transportation fuels excluded):
| Performance Year | Baseline Year | |
| Total building energy consumption | 224,493 MMBtu | 157,409 MMBtu |
Purchased electricity and steam:
| Performance Year | Baseline Year | |
| Grid-purchased electricity | 129,762 MMBtu | 84,903 MMBtu |
| District steam/hot water | 0 MMBtu | 0 MMBtu |
Gross floor area of building space::
| Performance Year | Baseline Year | |
| Gross floor area | 2,705,892 Gross square feet | 1,445,653 Gross square feet |
Floor area of energy intensive space, performance year::
| Floor Area | |
| Laboratory space | 28,140 Square feet |
| Healthcare space | 0 Square feet |
| Other energy intensive space |
Degree days, performance year (base 65 °F)::
| Degree days (see help icon above) | |
| Heating degree days | 3,703 |
| Cooling degree days | 1,580 |
Source-site ratios::
| Source-Site Ratio (see help icon above) | |
| Grid-purchased electricity | 3.14 |
| District steam/hot water | 1.20 |
Start and end dates of the performance year and baseline year (or 3-year periods)::
| Start Date | End Date | |
| Performance Year | June 1, 2014 | May 31, 2015 |
| Baseline Year | June 1, 2004 | May 31, 2005 |
A brief description of when and why the building energy consumption baseline was adopted:
A brief description of any building temperature standards employed by the institution:
Other than residential spaces, all administrative, academic, athletic and dining facilities are scheduled for time of use or occupancy through building automation with set points based on the campus Energy Conservation Policy. During the heating season, space temperatures are targeted at 68°F and between 74° - 76°F during the cooling season during occupied hours. Hot Water (HW) & Chilled Water (CHW) valves are Proportional Control based on building occupancy schedules where Energy Management Sensors read:
1. Room return air temperature, humidity, mixed air temperature, supply air temperature;
2. Fan start/stop, fan status, cfm;
3. VSD status (inlet vane damper position);
4. Static pressure;
5. HW & CHW valve position;
6. Damper positions.
A brief description of any light emitting diode (LED) lighting employed by the institution:
Numerous high-intensity discharge (HID) pole lights along sidewalks have been replaced with LED lamps. LED technology is also being utilized in several buildings as an alternative to halogen and incandescent bulbs.
A brief description of any occupancy and/or vacancy sensors employed by the institution:
Many buildings on campus have lighting sensors. Three primary types are used:
• Ceiling mount motion sensors with light switches at door entrances with dual technology – passive infrared and ultrasonic; 360 degree coverage; adjustable time delay
• Wall switch motion sensors with dual technology for rooms less than 200 square feet
• Ceiling motion sensors with dual technology for rooms more than 200 square feet
A brief description of any passive solar heating employed by the institution:
A brief description of any ground-source heat pumps employed by the institution:
The University has a geothermal system that was completed in 2011 as the primary source of heating and cooling for the five residential buildings in the Colonnades Neighborhood. The geothermal field is beneath the green space between the Colonnades residence halls and consists of 112 vertical bore holes each with a U-shaped pipe system that is 440 feet deep.
A brief description of any cogeneration technologies employed by the institution:
A brief description of any building recommissioning or retrofit program employed by the institution:
A brief description of any energy metering and management systems employed by the institution:
Many buildings on campus are tied into a central energy management system for building automation. Physical Plant personnel can make adjustments from an internet connection. The system allows room thermostats to be set to a particular temperature, based on the campus Energy Conservation Policy, with a pre-defined occupant adjustment zone. There are changeable reset schedules for hot water heat and chilled water cooling at time of occupancy. The economizer mode is used with enthalpy control, where applicable.
A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:
A brief description of any energy-efficient landscape design initiatives employed by the institution:
A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
The Vending Misers utilized on campus have a custom passive infrared sensor that powers down the vending machine when the area surrounding it is unoccupied and automatically repowers it when the area is reoccupied. A Vending Miser monitors the ambient temperature while the vending machine is powered down. The Vending Miser automatically powers up the machine at appropriate intervals, independent of occupancy, to ensure that the vended product stays cold. Vending Misers are on most campus cold drink vending machines as well as adjacent snack machines (about 40 different locations).
A brief description of other energy conservation and efficiency initiatives employed by the institution:
The website URL where information about the institution’s energy conservation and efficiency initiatives is available:
Data source(s) and notes about the submission:
FY 2014-15 is the performance year for this credit.
Elon University does not have a medical school or hospital. At this time other energy intensive spaces have not been identified.
FY 2014-15 is the performance year for this credit.
Elon University does not have a medical school or hospital. At this time other energy intensive spaces have not been identified.
The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.