Continuous Commissioning® Services
SEA helped reduce utility costs by $387k in less than a year.
About the Facility
Shelton State Community College is a public community college in Tuscaloosa, Alabama operated by the Alabama State Department of Postsecondary Education. Shelton is one of the largest two year colleges in the state. SEA was tasked to improve the performance of building operations systems through Continuous Commissioning® on the Martin Campus. The project involved evaluation and optimization of the Heating, Ventilation and Air Conditioning (HVAC) units.
AT A GLANCE
Shelton State Facts
$387k Reduced utility costs in less than a year
8 Commissioned Buildings
655k Square Feet
2016 Completion Date
Recommended Solutions
The documented utility savings resulted from optimizing HVAC equipment accordingly:
Optimized hot water supply temperature to reduce boiler demand while maintaining heating needs
Programmed control strategies to reduce/eliminate dehumidification based on space requirements
Programmed air handling units to reset the supply air temperature based on space temperature and setpoint
Monitored zone reheat valves to determine overcooled areas, verified flow rates versus design, making necessary corrections
Modified terminal box flow rates to reduce the amount of unoccupied cooling and heating
Investigated leaking or opened preheat valves on air handling units and manually closed valves on units
Built air handling unit schedules to shut down when unoccupied and to restart if spaces required conditioning
Verified outside air and return air damper operation on air handling units
Examined chilled water valves for leakage when commanded closed
Documented Savings
In just four months, the savings had already surpassed the projected annual goal of $85,000 and continued to grow with ongoing maintenance and careful oversight of the system. The documented savings for ten months was $387,144 and aggregate savings at the end of the SEA agreement were $663,144 which is 10,810,384 kWh.
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