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Toward technological maturity of CO2 pressure exchanger technology: evidence from a commercial refrigeration case study.

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

Type of article: IJR article

Summary

Improving energy efficiency while addressing the challenges of high ambient temperatures in the design of transcritical CO2 refrigeration systems requires innovative and multidimensional strategies. In 2023, a novel system incorporating a pressure exchanger was launched on the market: it partially recovers the mechanical energy otherwise lost through the transcritical expansion valve, enabling additional free subcooling while improving the performance and robustness of CO2 refrigeration systems in warm climates. Alongside other technologies, this solution is designed to reduce energy consumption throughout the year and guarantee reliable operation at elevated ambient conditions. This paper presents the latest experimental outcomes of a pressure exchanger integrated into a real installation, carried out as part of a demonstration activity within the EU-funded ENOUGH project. The site, located in Hungary, demonstrated efficiency improvements of up to 15% on average when compared with standard booster systems at temperatures above 20◦C, while ensuring more efficient and
dependable operation at outdoor temperatures up to 45◦C. 

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Pages: 10 p.

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Details

  • Original title: Toward technological maturity of CO2 pressure exchanger technology: evidence from a commercial refrigeration case study.
  • Record ID : 30034789
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 185
  • Publication date: 2026/05
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2026.02.006

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