대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2007년도 동계학술발표대회 논문집
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- Pages.88-94
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- 2007
전류정보를 이용한 가변속냉동시스템의 열교환기 실시간 고장 진단
On-line Fault Detection and Diagnosis for Heat Exchanger of Variable Speed Refrigeration System Based on Current Information
- Lee, Dong-Gyu (Department of Refrigeration and Air-Conditioning Engineering, Graduate School, Pukyong National University) ;
- Jeong, Seok-Kwon (Department of Mechanical Engineering, Pukyong National University)
- 발행 : 2007.11.30
초록
This study deals with on-line fault detection and diagnosis for heat exchanger of variable speed refrigeration system. Conventional studies about fault of heat exchanger in refrigeration system have used temperature and pressure information. The temperature and pressure are able to be used valuably for faults detection of constant speed refrigeration system. However in case of variable speed refrigeration system, the temperature and pressure are no longer useful information for fault detection due to compensation effect of feedback controller. While current information is possible to detect faults of variable speed refrigeration system. The current information was detected in an inverter, it was used after transforming rms value. The faults of variable speed refrigeration system are divided into electrical faults and mechanical faults. We performed fault detection and diagnosis about heat exchanger among mechanical faults such as condenser fouling and evaporator fan fouling through some experiments.
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