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Correlation Analysis of evaporation pressure readings in CO2 supermarket refrigeration systems.

Number: 0046

Author(s) : SCHULTE A., TEGETHOFF W., KOEHLER J.

Summary

Digital Twins for refrigeration systems can be used to create advanced digital services. These services rely on correct and consistent data. A typical supermarket refrigeration system measures the evaporation pressure at multiple points. Because all the pressure sensors, on a given pressure level, are connected to a common suction line, they provide redundant measurements, that can be leveraged for fault detection. Furthermore, the pressure readings carry structural information about the layout of the system. In this work a method for fault detection using evaporation pressure readings in a CO2 supermarket refrigeration system is presented. Based on a correlation analysis of the evaporation pressures, the presented method can identify inconsistent measurements. Beyond that, this method can identify the components belonging to the individual pressure levels. The method is applied to real world data from supermarket monitoring systems. Examples of found inconsistencies are shown and the ability to identify structure is demonstrated.

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Pages: 10 p.

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Details

  • Original title: Correlation Analysis of evaporation pressure readings in CO2 supermarket refrigeration systems.
  • Record ID : 30029675
  • Languages: English
  • Subject: Technology
  • Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
  • Publication date: 2022/06/13
  • DOI: http://dx.doi.org/10.18462/iir.gl2022.0046
  • Document available for consultation in the library of the IIR headquarters only.

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