IIR document

The influence of evaporation pressure dynamics on energy consumption.


The evaporation pressure in a supermarket refrigeration system constantly fluctuates around its setpoint. Refrigerated display cases play a major role in driving the dynamic behaviour of the evaporation pressure. A significant part of this dynamic is influenced by the controllers and their control actions. This holds true for the individual controllers on the display cabinets, as well as the controller on the compressor rack. The result of that are complex interactions between the display cases and the compressor rack. It is suspected, that these fluctuations negatively influence the energy demand of the refrigeration system.
In this paper, a dynamic model of a supermarket is presented and validated against real operating data. The model is able to represent the dynamics of real display cabinets and a compressor rack including all interactions relevant for the refrigeration system. Based on the model an investigation into the influence of evaporation pressure fluctuations and their impact on the energy demand is performed.

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Pages: 12 p.


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  • Original title: The influence of evaporation pressure dynamics on energy consumption.
  • Record ID : 30031757
  • 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.2023.0343


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