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A digital twin for fault detection in commercial refrigeration systems: application to refrigerant leakage detection.

Number: 0524

Author(s) : HADDAD E., ZOUGHAIB A.

Summary

Faults on refrigeration equipments may be responsible of energy performance losses and undetected refrigerant leackage. Detecting these faults in early stages is an important challenge. In this paper, a methodology for designing a digital twin of a commercial refrigeration equipment is presented. The digital methodology for designing a digital twin of a commercial refrigeration equipment is presented. The digital fast learning process and a high prediction capacity of the digital twin. An application for the refrigerant leackage detection is presented and validated thanks to an  experimental campaign on a condensing unit under a controlled leakage. The tested condensing unit having a piston compressor of 16 m3/h is cooling a secondary glycol loop. It has a thermostatic expansion device. The condensing unit is first charged in a way to overfill the liquid receiver. A leakage is simulated by connecting the receiver’s outlet to a micro valve that delivers the refrigerant to an external empty cylinder continuously weighted. Different measured variables are recorded. These are low and high pressures, inlet and outlet temperatures of condenser and suction temperature. Compressor electricity consumption and the produced cooling capacity are also monitored. Results show the capability of the digital twin to detect the leackage and predict the amount of lost refrigerant.

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Pages: 9

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Details

  • Original title: A digital twin for fault detection in commercial refrigeration systems: application to refrigerant leakage detection.
  • Record ID : 30031806
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0524

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