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IIR document

Comparison of efficiency increasing methods in transcritical CO2 refrigeration systems.

Number: pap. n. 1201

Author(s) : DOERFFEL C., TANNERT T., HESSE U.

Summary

CO2 refrigeration systems often encounter a drastical decrease of COP during transcritical operation. Most commonly used methods for increasing the system efficiency are parallel compression, ejectors or other work recovery expansion devices and mechanical subcooling. The comparison of those methods in reference to the same refrigeration cycle is subject of the current research work. Previous publications are presented considering the comparison of single methods usually in reference to a specific base cycle. To obtain the comparability of the mentioned methods a system simulation is performed within this paper with respect to the prospective applicability of all methods on one existing refrigeration cycle. As result of the simulations the system’s efficiency improvement potential of each method is presented considering the corresponding operation conditions. Finally, a direct comparison between all methods is done. In conclusion the applicability of different efficiency increasing methods for transcritical operated CO2 refrigeration systems is stated.

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Pages: 7

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Details

  • Original title: Comparison of efficiency increasing methods in transcritical CO2 refrigeration systems.
  • Record ID : 30026732
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1201
  • Notes:

    Keynote


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