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CO2 pressure exchanger technology in commercial refrigeration: a new case study towards technological maturity.

Number: 1163

Author(s) : TRABUCCHI S., FARKAS D., TARJAN G., NEMETH L., SZABO T., ORLANDI M., MAZZOLA D.

Summary

The strategy for tackling the challenges of high ambient temperatures in transcritical CO2 refrigeration systems design must be innovative and multi-dimensional. In 2023 an innovative system featuring a pressure exchanger has been introduced in the market: it partially recovers the mechanical energy lost through the transcritical expansion valve to create additional free subcooling, while bolstering the performance and resilience of CO2 refrigeration systems in hot climate. Together with other systems, this technology is tailored to reduce energy consumption year-round and ensure reliable operation under higher ambient temperatures. The present paper reports the ultimate experimental results of a
pressure exchanger integrated in a real installation as part of a demonstration activity within the EUfunded ENOUGH project. The installation, located in Hungary, showed efficiency gain of up to 15% on average compared to standard booster systems, with temperatures higher than 20°C, and allowing a reliable and more efficient operation up to 45°C.

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  • Original title: CO2 pressure exchanger technology in commercial refrigeration: a new case study towards technological maturity.
  • Record ID : 30034195
  • Languages: English
  • Subject: Technology
  • Source: 1st IIR International Conference on Refrigeration Adapting to Rising Temperatures
  • Publication date: 2025/08
  • DOI: http://dx.doi.org/10.18462/iir.adaptation.2024.1163

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