Energy Management Systems

Roche Dining Commons Energy Management System

The Roche Dining Commons energy conservation project included installing direct digital controls (DDC) on all seven of the building's air handling units, and connecting them to the campus wide energy management system (EMS). Prior to this project, an EMS was installed as part of the renovation of The Hill. However, it was limited to a single make-up air unit serving the kitchen on the lower level. An electric submeter was installed in December of 2012 in preparation for this project. Tracking the building's usage allowed the College to have an engineering study completed for the building, then apply for incentive funding from our utility providers. This study was completed in June of 2013, and the project started the following month and was completed in December 2013. The savings associated with this project will come from reduced run times and more efficient control of the units.

Annual Energy and Cost Savings

Annual Savings Energy Savings Cost Savings
Electricity 579,218 kWh $65,452
Natural Gas 2,349 therms $2,326
Total 2,212 MMBTU $67,778

Project Budget and Payback

Project Cost $85,125
Incentive Funding $58,573
Total Cost to College $26,552
Payback (months) 4.7 months

Martin Institute Energy Management System

The Martin Institute energy conservation project includes installing direct digital controls (DDC) on two air handling units, the chilled water system, and variable air volume (VAV) and connecting them to the campus wide energy management system (EMS). Prior to this project, an EMS was installed as part of the renovation of The Hill. However, it was limited to a single make-up air unit serving the kitchen on the lower level. An electric submeter was installed in December of 2012 in preparation for this project. Tracking the building's usage allowed the College to have an engineering study completed for the building, then apply for incentive funding from our utility providers. This study was completed in June of 2013, and the project started the following month. The savings associated with this project will come from reduced run times and more efficient control of the units.

Campuswide Energy Management System

An energy management system (EMS) is a system of computer-aided tools used to monitor, control, and optimize the performance of heating, cooling and lighting systems. The computer aided tools include routers and controllers throughout each building on campus, and a server that resides in the College Data Center.

The College currently utilizes three different energy management systems, which include two instances of Metasys Extended Architecture by JCI and one instance of Tridium by Niagara. Facilities Management and the College's Energy Manager are able to access these systems to facilitate troubleshooting equipment failures and temperature issues, manage building schedules and adjust temperature setpoints. Tridium is also used to track the College's utility submeters. Energy management and utility tracking are essential when planning equipment and controls upgrades and equipment. Metasys Extended Architecture utilizes proprietary software that inhibits the College from consolidating from three EMSs to a single EMS. That being said, the hardware connected to this system is non-proprietary and may be connected to any open protocol EMS. Tridium is the most advanced EMS available today and also utilizes an open protocol; therefore, buildings that utilize Metasys Extended Architecture will be migrated to Tridium.

Merkert-Tracy was the first building to be migrated to Tridium by the College's Energy Manager. The Shields Science Center and Roche Dining Commons both underwent energy efficiency projects in 2013, which included migrating them to Tridium as well. At this time the Energy Manager is creating the database for the New Residence Hall, which will be migrated to Tridium in the sping of 2014. The final building to be migrated will be Cushing Martin, which will occur the summer of 2014. It is expected that Metasys Extended Architecture will no longer be utilized on campus by the fall of 2014.