An Overview of Optimal Control for Central Cooling Plants with Ice Thermal Energy Storage

[+] Author and Article Information
Gregor P. Henze

Architectural Engineering, University of Nebraska-Lincoln, 1110 S. 67th Street, Peter Kiewit Institute 203D, Omaha, NE 68182-0681e-mail: ghenze@unl.edu

J. Sol. Energy Eng 125(3), 302-309 (Aug 04, 2003) (8 pages) doi:10.1115/1.1591801 History: Received September 01, 2002; Revised March 01, 2003; Online August 04, 2003
Copyright © 2003 by ASME
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Indirect ice production
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Schematic of ice storage system
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Timer-based chiller-priority control
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Reactive storage-priority control using brine return temperature
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Constant-proportion control through constant brine temperature
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Optimal design solution for minimal storage and chiller capacities for two locations; from 14
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Chiller and storage capacity relationships in presence of heat waves; from 14
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Surface plot of ratio of cost with and without ice storage cice/c versus ratio of demand rates rd,1/rd,0 and ratio of energy rates re,1/re,0 for optimal control
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Overview of the predictive optimal control procedure
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Operating cost savings as a function of horizon L for various predictors
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State-of-charge of TES for four-day periods under real-time pricing




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