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TECHNICAL PAPERS

Characteristic Physical Parameter Approach to Modeling Chillers Suitable for Fault Detection, Diagnosis, and Evaluation

[+] Author and Article Information
Yongzhong Jia, T. Agami Reddy

Department of Civil and Architectural Engineering, Drexel University, Philadelphia, PA

J. Sol. Energy Eng 125(3), 258-265 (Aug 04, 2003) (8 pages) doi:10.1115/1.1567317 History: Received May 01, 2002; Revised October 01, 2002; Online August 04, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic Diagram for a Single-Stage Chiller
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Time series plots of the condenser and evaporator (UA) values determined from DUK chiller data (160 steady-state data points)
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Time series plots of the motor efficiency and the compressor polytropic efficiency values determined from DUK chiller data (160 steady-state data points)
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Measured and regression model-predicted lab chiller characteristic parameters
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Measured and predicted lab chiller performance data
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Summary plot of the relative uncertainty at 95% CL defined as the ratio (standard error/estimate) of the various characteristic parameters under different sensor grade types (commercial or industrial) for load factor values of 0.3 and 0.6 using single measurement point
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Same as Fig. 6, but for multiple measurements of 15 points

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