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Development of a remote refrigerant leakage detection system for VRFs and chillers.

Number: 2152

Author(s) : KIMURA S., MORIWAKI M., YOSHIMI M., YAMADA S., HIKAWA T., KASAHARA S.

Summary

Reducing refrigerant leakage from refrigeration and air-conditioning equipment is one of the essential issues to solve the global warming problem. Many countries are enacting laws requiring owners of large refrigeration and air-conditioning equipment such as VRFs, chillers, and large rooftops to carry out regular inspections for refrigerant leaks and to repair any leaks that are found. There are two methods of regular inspections: direct inspections using visual checks or a gas sensor leak detector, and indirect inspections using equipment operating data to detect leakages. However, large equipment has many inspection points, and manual inspection using the direct method is very time-consuming and labor-intensive, placing a heavy burden on both the equipment owner and inspector. On the other hand, in many cases, there are incentives such as exemption from inspections or halving the number of inspections by installing a permanent leak detection system. The authors are developing a highly accurate refrigerant leakage detection system that meet incentive requirements using machine learning techniques. This paper reports on the details of the technology and the detection accuracy evaluated with on-site VRFs and chillers.

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Pages: 9 p.

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Details

  • Original title: Development of a remote refrigerant leakage detection system for VRFs and chillers.
  • Record ID : 30030493
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022/07/10

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