This University project was initiated by the Energy Services and Sustainability (ESS) group within Facility Operations and Development (FOD) and is led by the Facility Design and Construction office (FDC). The lead contracting partner is Johnson Controls Inc. (JCI). Major subcontractors include Bruner Corporation and Building Controls Integrators (BCI).
"ECM" is a project created to reduce energy consumption. The acronym "ECM" denotes Energy
Conservation Measures. The University project designation for this effort is OSU-
Legislation recently enacted as an outcome of Ohio House Bill 251 mandates that each institution of higher education develop a plan to reduce energy consumption by at least 20% by end of Fiscal Year 2014. A secondary goal of this legislation is for each institution to achieve a similar 20% reduction in carbon dioxide emission levels for the same comparative period. Additionally, the University has signed the American College & University Presidents' Climate Commitment which can be seen at www.presidentsclimatecommitment.org
The ECM project has evolved partially as a response to these influences and partially in response to the economics of energy conservation. Beyond this project, which addresses five of the largest energy consuming facilities on campus, a larger project follows that will address an additional ~200 buildings.
The project is actively underway in all five facilities listed above. A portion of the work foreseen in the PRB is already completed. Scheduling of the work that involves the lab air systems and fume hoods is underway and will be communicated separately.
Work on this project for the PRB goes throughout the building with special emphasis on the air handlers in the basement mechanical room, the main exhaust fans on the roof, and fume hoods and lighting systems in individual labs.
The project hopes to meet its goals by completing the following actions:
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Project is configured under a "Performance Contracting" arrangement. Contractual details are not available via this website.
Who:
What:
Why:
When:
Where:
How:
How Much:
Planned Schedule and Timing
Date not yet fixed: Expected to be done in first quarter ‘14.
Date not yet fixed: Expected to be done in first quarter ‘14
Will be coordinated with individual lab occupants. Expected to be begin in early ‘14 with approximately one week per lab needed to complete the work.
Will be coordinated with individual lab occupants. Expected to be begin in early ‘14 with approximately one week per lab needed to complete the work.
Date not yet fixed: Expected to begin in early ‘14
Complete -
Area or System
Air Handler VFD Installation
Exhaust Fan VFD Installation
Modifications in Labs
with Hoods
Modifications in Labs
with no Hoods
Aircuity Optinet System
Installation of work to
be done external to
occupied spaces
Weatherstripping and piping insulation
• Outage 2
** Disclaimer **
This web page exists solely as a tool for communicating project information to the specific audience of lab occupants within the Physics Research Building. The content reflects the understanding of the project as held by the Physics Department facility team and may or may not be factually correct. The site does not serve to define any system design or other engineering parameters that are related to the project. Parties in need of information beyond the context stated herein should contact the University.
The below drawings provide a schematic representation of the existing/before and new/after condition of the main supply and exhaust systems, of a representative lab with no hood, and of a representative lab with a hood.
Click the drawing icon in the table to open
System Modifications or Enhancements
Install variable frequency drives (VFD) on supply fan motors.
Install variable frequency drives (VFD) on exhaust fan motors
Remove the interlock between the run state of air handlers to exhaust fans. Establish a fixed duct static pressure setpoint and modulate supply fan speed with VFD to hold setpoint. Establish a constant baseline minimum exhaust flow rate and sum the variable exhaust flow rates across the building in real time. Modulate all six exhaust fans as one to reach the calculated total flow rate of base + variable.
Install “Phoenix Controls “ flow control damper at exhaust of each hood.
Install limit switches for open and closed sash position at each hood.
Maintain necessary and constant face velocity of hood in either open or closed position with control damper modulating accordingly. In closed position, flow to meet necessary face velocity will be less.
Replace existing controls for supply and exhaust with new controls.
Install “Aircuity Optinet” system with link to local sensor suite
Reduce lab air changes per hour if ALL the following control parameters are satisfied:
1.) temperature setpoint reached
2.) fume hood sash position = closed
3.) occupancy state = unoccupied
4.) “aircuity” sensor suite clear.
Reduce lab air changes per hour if ALL the following control parameters are satisfied:
1.) temperature setpoint reached
2.) occupancy state = unoccupied
Program existing low voltage lighting controls to turn off lab lighting at periodic times throughout the night.
Link lighting on/off state to determination of room occupancy for one of the input parameters for reduced air flow.
Area or System
Lab-
AHU-
Main Exhaust Fans
Main Supply and Exhaust Interlocks
Individual Fume Hoods
Individual Labs with hoods
Individual labs with no hoods
Lab lighting
SENSOR LOCATIONS **
The below listing links to sensors that have been installed in various labs to establish baseline “BEFORE ECM” conditions to compare with the forthcoming “AFTER ECM” conditions.
The column labeled PDF links to a floor plan where the specific room location can be found.
The column labeled sensor locations links to the actual web interface for that particular sensor.