| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 57.74 |
| Liaison | Andrew Horning |
| Submission Date | March 27, 2012 |
| Executive Letter | Download |
University of Michigan
OP-T2-13: Timers for Temperature Control
| Status | Score | Responsible Party |
|---|---|---|
|
0.25 / 0.25 |
Terrance
Alexander Executive Director Office of Campus Sustainability |
Does the institution use timers to regulate temperatures based on occupancy hours in at least one building?:
A brief description of the technology used:
Building Automation Services (BAS) is part of the University of Michigan’s Facilities Maintenance department. BAS serves nearly all of the University's General Fund Buildings, and a few non-general fund buildings. BAS implements schedule and operational changes for various types of equipment, and monitors alarm conditions and energy efficient system operation.
Direct Digital Control, known as “DDC” is at the heart of building automation. DDC measures environmental conditions and compares the measurements to the desired settings (a.k.a. setpoints). It calculates an appropriate response if the two aren't equal, and sends out control signals to correct for any difference. Start/stop control and alarm reporting are also incorporated into DDC.
DDC is typically used to control fan systems, namely the supply and return fan speeds, fresh-air mixing dampers, heating and cooling coils and humidification systems, all to maintain the desired fan discharge temperature and humidity and ultimately the occupied spaces of buildings.
The website URL where information about the practice 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.