| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 53.24 |
| Liaison | Tess Esposito |
| Submission Date | Feb. 23, 2017 |
| Executive Letter | Download |
University of Dayton
OP-8: Building Energy Consumption
| Status | Score | Responsible Party |
|---|---|---|
|
1.31 / 6.00 |
Total building energy consumption, all sources (transportation fuels excluded):
| Performance Year | Baseline Year | |
| Total building energy consumption | 566,610 MMBtu | 511,059 MMBtu |
Purchased electricity and steam:
| Performance Year | Baseline Year | |
| Grid-purchased electricity | 267,811 MMBtu | 252,119 MMBtu |
| District steam/hot water | 0 MMBtu | 0 MMBtu |
Gross floor area of building space::
| Performance Year | Baseline Year | |
| Gross floor area | 4,371,432 Gross square feet | 3,921,784 Gross square feet |
Floor area of energy intensive space, performance year::
| Floor Area | |
| Laboratory space | 253,695 Square feet |
| Healthcare space | 3,964 Square feet |
| Other energy intensive space |
Degree days, performance year (base 65 °F)::
| Degree days (see help icon above) | |
| Heating degree days | 5,030 |
| Cooling degree days | 1,247 |
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 | July 1, 2015 | June 30, 2016 |
| Baseline Year | July 1, 2011 | June 30, 2012 |
A brief description of when and why the building energy consumption baseline was adopted:
2011 was the first year of reporting to STARS.
A brief description of any building temperature standards employed by the institution:
All buildings are scheduled to be fully conditioned only during the period of 6 AM to 11 PM. Some buildings may have different hours depending on use patterns and function. During the summer, at least one building is closed and only minimally conditioned to prevent mold and humidity damage.
A brief description of any light emitting diode (LED) lighting employed by the institution:
A major focus of the university’s green revolving fund has been to retire florescent lights in favor of LED replacement lamps. These projects have shown that it is financially prudent to replace even relatively efficient T8 lamps. Students and staff are systematically identifying building spaces where it is profitable to replace the florescent lamps and using GRF money or other funding to complete these projects. For several years, the university has also been replacing its high pressure sodium exterior lighting and gym lighting with LED lamps.
A brief description of any occupancy and/or vacancy sensors employed by the institution:
Motion occupancy sensors have been installed in almost all applicable spaces for some time now. Pilot projects to install occupancy sensors in stairwells are ongoing, which could save more than 50% of stairwell lighting energy. An additional pilot project will “tune up” our motion sensor system in Fitz Hall. If it results in improved performance it can be used in other buildings.
A brief description of any passive solar heating employed by the institution:
N/A
A brief description of any ground-source heat pumps employed by the institution:
The solar building at the Energy Experience Center has a ground source heat pump system that is able to heat and cool the building by exchanging heat with the ground using a series of tubes placed in vertical holes in the ground.
A brief description of any cogeneration technologies employed by the institution:
The solar building at the Energy Experience Center has a ground source heat pump system that is able to heat and cool the building by exchanging heat with the ground using a series of tubes placed in vertical holes in the ground.
A brief description of any building recommissioning or retrofit program employed by the institution:
N/A
A brief description of any energy metering and management systems employed by the institution:
A Johnson Controls system is in place allowing energy monitoring for much of campus from a central location in Facilities Management. The new Green Kiosk allows campus personnel with special access to download individually-metered electric data for nearly all buildings except the student neighborhood. A public-facing version of the Green Kiosk allows students and the public to view this data in a user-friendly format online.
A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:
N/A
A brief description of any energy-efficient landscape design initiatives employed by the institution:
N/A
A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
Vending Miser units have been installed on every vending machine on campus. These reduce both the lighting and compressor use of the machine, and operate on an occupancy sensor. The compressor is set to run a short time every few hours to maintain temperature, while the lights are set to turn off after a short period of inactivity and stay off until the occupancy sensor is tripped.
A brief description of other energy conservation and efficiency initiatives employed by the institution:
Variable speed drives have been installed on most air hander/pump motors when financially viable. Students and staff work together to study the feasibility of these projects and apply for funding with the green revolving fund. The university participates in the demand response program and conducts a demand response test during the summer. The compensation from participation in this program goes toward new energy projects. The university is in the planning stages of a new green roof that will be installed on Kennedy Union.
The website URL where information about the institution’s energy conservation and efficiency initiatives is available:
Data source(s) and notes about the submission:
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.