Chiller Plant Upgrade Saves $500,000 Per Year

October 24, 2014 By Linda Hardesty

Pepco Chiller PlantPepco Energy Services hired Tustin Energy Solutions to improve the operation of its Midtown Thermal Control Center (MTCC) in Atlantic City, NJ. Tustin’s services resulted in a nearly 25 percent improvement in operating efficiencies and a savings of over $500,000 annually in energy and operation costs.

Pepco’s chiller plant operates 24 hours a day, 365 days a year, providing essential chilled water via a 42″ header to numerous Atlantic City casinos, shops and the Atlantic City Boardwalk Hall and Visitors Center.

Tustin made several energy efficiency upgrades that included utilizing a non-proprietary optimization system called Central Plant Energy Control System (CPECS), which uses an open protocol. At the heart of the software is an algorithm that is computing all possible chiller, pump and cooling tower sequencing permutations, modified flows, set points and load limits. These calculations find the combination of equipment and speeds that result in the lowest kW input and/or the lowest instantaneous cost of production. All of this is recorded, reported and implemented in real time.

The system’s automated demand response, used for balancing supply and demand, allows operators to program the optimization system so it stays under a predetermined plant electrical load.

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