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NDT.net Issue: 2023-08 Proceedings of the 13th European Conference on Non-Destructive Testing (ECNDT) from 3 to -7 of July 2023 in Lisbon, Portugal (ECNDT 2023*) | Vol. 1(1) Special Issue of Research and Review Journal of Nondestructive Testing (ReJNDT) ISSN 2941-4989 Vol. 1(1) Session: Monitoring (SHM, Acoustic Emission, Resonance, Vibration Analysis) | ||||||||||||||||||||||||||
Hybrid system development and application research for refrigerant leak inspectionYeongil Choi, Hyunsoo Song, Junpil Park, Jaesun Lee2aDepartment of Smart Manufacturing Engineering bExtreme Environment Design and Manufacturing Engineering Innovation Center cSchool of Mechanical Engineering cDepartment of Mechanical System Design; Changwon National University6, CHANGWON, South Korea Abstract: Recently, record-breaking heatwaves due to global warming and abnormal weather have
occurred in the summer, and sales and usage of air conditioners are rapidly increasing.
Air conditioners are widely used all over the world and are recently expanding to
centralized management system air conditioners. There are many customers requesting
repairs due to leaking air conditioner refrigerant. However, the problem of refrigerant
leakage is difficult to repair because it is difficult to quickly and accurately determine
whether there is leakage on site. Air conditioner refrigerant leakage occurs in various
parts such as outdoor units, indoor units, and connecting pipes, and there are cases of
leakage due to minute defects, making it difficult to clearly determine whether there is
leakage. Research was conducted to develop a hybrid system so that immediate judgment
on these issues could be made in the field. A refrigerant leak diagnosis method was
studied based on an acoustic emission sensor, and a refrigerant leak diagnosis procedure
and hybrid diagnosis system were developed to detect refrigerant leak signals for each air
conditioner component in consideration of the characteristics of the UV gas detector and
each inspection method. It is expected that field diagnosis of air conditioning systems can
be effectively applied using the procedure and diagnosis system developed through this
study View: Comments or Questions? Share: Published: 1 Aug 2023 / Accepted: 28 Jul 2023 Review Status: Peer reviewed
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