| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 50.16 |
| Liaison | Tony Gillund |
| Submission Date | March 27, 2013 |
| Executive Letter | Download |
Purdue University
SD-10: Energy Use by Type
| Status | Score | Responsible Party |
|---|---|---|
|
N/A |
Michael
Gulich Director of University Sustainability University Sustainability |
"---"
indicates that no data was submitted for this field
None
The percentage of total electricity use from coal.:
90
None
The percentage of total electricity use from wind.:
0
None
The percentage of total electricity use from biomass.:
0
None
The percentage of total electricity use from natural gas.:
10
None
The percentage of total electricity use from solar PV.:
0
None
The percentage of total electricity use from geothermal.:
0
None
The percentage of total electricity use from nuclear.:
0
None
The percentage of total electricity use from hydro.:
0
None
The percentage of total electricity use from other.:
0
None
Provide a brief description.:
See Notes.
None
The percentage of total energy used for heating buildings from coal.:
90
None
The percentage of total energy used for heating buildings from biomass.:
0
None
The percentage of total energy used for heating buildings from electricity.:
0
None
The percentage of total energy used for heating buildings from natural gas.:
10
None
The percentage of total energy used for heating buildings from geothermal.:
0
None
The percentage of total energy used for heating buildings from fuel oil.:
0
None
The percentage of total energy used for heating buildings from other.:
0
None
Provide a brief description.:
---
None
If cogeneration, please explain.:
See Notes.
Data source(s) and notes about the submission:
Boiler configuration:
•Two stoker coal boilers that can co-fire natural gas at 20% of each boiler's total capacity
•One fluidized bed coal boiler
•One dual fuel natural gas/fuel oil boiler
In 2013, after the new natural gas boiler is operational, one of the stoker coal boilers will be decommissioned.
The utility plant boilers generate steam which is distributed through a steam tunnel system at 125 PSIG and 15 PSIG. That steam is the sole heating source for 13.5 million gross square feet of campus buildings and is utilized in air handling units and for perimeter heat. Potable water is also heated with that steam. As the steam is used, it condenses and the condensate is returned to the utility plant. Over 90% of the steam that is distributed to campus is recycled back to the boilers.
Purdue produces electricity as a result of the cogeneration process. In the cogeneration process, steam is used to heat buildings, drive chillers, and produce electricity. As the result of cogeneration, Purdue's environmental footprint is significantly reduced. Over the course of the year, we typically generate 30-50% of the electricity required to meet campus needs.
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.