Fault detection of improper refrigerant charge for heat pump system

Dong Won Han, Young Soo Chang, Seo Young Kim, Yong Chan Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper discusses fault detection of improper refrigerant charge for heat pump system using model-based method. In this study, we employed normalized distance method for fault detection classifier. Normalized distance method identifies a fault by statistically different between the current residuals and the expected residuals. Compressor speed, outdoor air dry bulb temperature, and indoor air dry bulb temperature are selected as independent variables of fault-free reference model. Dependent variables select compressor discharge temperature, condenser temperature, evaporator temperature, superheat temperature, subcool temperature, and total current. In this study, we developed fault-free reference model using experimental characteristic data of heat pump system under normal operation. Sensitivity analysis of fault detection was carried out with respect of fault progress. Fault detection using normalized distance method proposed in this study predicts accurately failure mode for improper refrigerant charge.

Original languageEnglish
Title of host publicationACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning
PublisherSociety of Air-conditioning and Refrigerating Engineers of Korea, SAREK
Publication statusPublished - 2014
Event7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014 - Jeju Island, Korea, Republic of
Duration: 2014 May 182014 May 21

Other

Other7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014
CountryKorea, Republic of
CityJeju Island
Period14/5/1814/5/21

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Control and Systems Engineering
  • Mechanical Engineering

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