Skip to main content
Add as a preferred source on Google

Chiller Plant Optimization Saves Money

  • 02/01/18
chiller plant

Baylor saved more than $460,000 (about 24 percent of electricity costs), 5.8 million kilowatt-hours, and 8.6 million pounds of CO2 with Optimum Energy.

Baylor University in Waco, TX, had a typical chiller plant—it ran well, but it was a hodgepodge of equipment and it was managed manually. Operators judged once per shift when to add or shed electricity load based on demand. That imprecise, inconsistent process made the plant inefficient.

Kenneth Haltom, who manages Baylor’s energy services through a partnership with Aramark, and his team suspected that chiller plant optimization would be the best way to increase efficiency and reduce energy costs. There was good savings potential: the eight-chiller plant, which cools 4.9 million square feet of space 365 days a year, was using 32 million kWh of electricity annually.

The team brought in Optimum Energy to assess the opportunity, and found their hypothesis was right. Optimum installed its OptimumLOOP software and OptiCx platform. The closed-loop optimization solution reads data every 30 seconds and dynamically adjusts plant equipment in real time in response to changing conditions. The software determines the best operating conditions across the plant and makes on-the-fly changes to all eight chillers, water pumps and cooling tower equipment.

“OptimumLOOP made everything automatic, from slightly adjusting a single valve to improve water flow, to shedding entire machines from the system when demand decreases,” explains Haltom. “Each chiller operates at a different output and rate, depending on what gives us the greatest efficiency.”

In the first year of operation, plant efficiency went from 0.897 kW/ton to 0.681 kW/ton. Baylor saved more than $460,000 (about 24 percent of electricity costs), 5.8 million kilowatt-hours and 8.6 million pounds of CO2. Also, air-conditioned spaces became more comfortable, and chiller equipment is now easier to maintain.

“Chiller optimization offered us the biggest bang for the buck,” says Haltom. “The product from the chiller plant is better, more consistent, and it’s now based on real-time load rather than operator guesses.”

www.optimumenergyco.com

This article originally appeared in the College Planning & Management February 2018 issue of Spaces4Learning.

Featured

  • St. Lucie County, Fla., Breaks Ground on New K–8 School

    St. Lucie Public Schools in St. Lucie County, Fla., recently held a groundbreaking ceremony for a new K–8 school, according to a news release. The district partnered with Spiezle Architectural Group, Inc., for the design of the upcoming Ft. Pierce K–8 School, which comprises six buildings covering 215,000 square feet.

  • Missouri Child Development Center Completes $2.3M Expansion

    The Urban Sprouts Child Development Center in St. Louis, Mo., recently announced the completion of a $2.3-million expansion and adaptive reuse project, according to a news release. The new space includes a retail café, outdoor learning space, and a support office building.

  • California District Opens New Robotics Center

    The Fremont Union High School District (FUHSD) in Cupertino, Calif., recently held a Grand Opening ceremony for a new, district-wide Robotics Center, according to a news release. The 14,500-square-foot facility was designed by Quattrocchi Kwok Architects (QKA); Landmark Constructors served as the builder and Blach Construction as general construction manager.

  • Montclair State University Starts Construction on $120M STEM Building

    Montclair State University in Montclair, N.J., recently broke ground on a new $120-million Interdisciplinary Science Building, according to university news. The university partnered with HoK Architects for the project’s design, and it’s scheduled to open in time for the 2028–29 academic year.