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Energy Management of Chiller Plant for Improved Efficiency and Operation
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This paper describes a success story on energy management of the chiller plant at Georgia Tech. A multilevel control and optimization method is implemented by using distributed control systems. Substantial energy savings, reduced manpower costs, and improved plant operation is realized. The main features of the system is its ability to control, optimize, and coordinate at three respective levels while meeting the operational requirements of plant chillers. The chiller energy management is an integrated part of total energy management system including the boilers. A uniform display is used for boilers, chillers, compressors, etc. Specific control logics are presented. Graphic displays of the equipment along with trends and bar graphs are shown on CRT by single or a few operator-friendly keystrokes. The energy savings and operational improvements are discussed along with the distributed control equipment. The advantages of distributed control system as evidenced in this particular application are described.
Alexander, D. P.; Rice, L. S. (1987). Energy Management of Chiller Plant for Improved Efficiency and Operation. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from