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http://dx.doi.org/10.3795/KSME-B.2010.34.4.333

Technology for Real-Time Identification of Steady State of Heat-Pump System to Develop Fault Detection and Diagnosis System  

Kim, Min-Sung (New and Renewable Energy Department, Korea Institute of Energy Research)
Yoon, Seok-Ho (Dept. of Energy Plant, Korea Institute of Machinery and Materials)
Kim, Min-Soo (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.4, 2010 , pp. 333-339 More about this Journal
Abstract
Identification of a steady state is the first step in developing a fault detection and diagnosis (FDD) system of a heat pump. In a complete FDD system, the steady-state detector will be included as a module in a self-learning algorithm, which enables the working system's reference model to "tune" itself to its particular installation. In this study, a steady-state detector of a residential air conditioner based on moving windows was designed. Seven representative measurements were selected as key features for steady-state detection. The optimized moving-window size and the feature thresholds were decided on the basis of a startup-transient test and no-fault steady-state test. Performance of the steady-state detector was verified during an indoor load-change test. In this study, a general methodology for designing a moving-window steady-state detector for applications involving vapor compression has been established.
Keywords
Heap Pump; Fault Detection and Diagnosis; Steady-State Detector; Moving Window;
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