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Numerical optimisation of a cold energy storage accumulator for thermosiphon application in vapour compression refrigeration systems.

Number: 1048

Author(s) : YEDMEL M. A., GBEHE E., LEDUCQ D.

Summary

Thermal energy storage is favoured for cold storage in vapour compression refrigeration systems (VCRS). A thermosiphon thermal accumulator was previously designed to provide cold to the evaporator of any VCRS during power cuts, extending demand-side management to more users. The accumulator is a finned-tube heat exchanger located inside a rectangular container. The phase change material (PCM) is placed inside the container, and the refrigerant circulates through the heat exchanger tubes. As a crucial factor in improving charge/discharge efficiency, the design of the accumulator was optimised by simulating only part of the accumulator using COMSOL Multiphysics. The study maximised heat transfer between the refrigerant and the PCM, resulting in an optimised version of the accumulator in which the PCM solid fraction after 1 hour was increased from 76.64 % to 100 % and PCM_ratio from 76.20 % to 80.43 %. The model was validated experimentally.

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Pages: 11 p.

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Details

  • Original title: Numerical optimisation of a cold energy storage accumulator for thermosiphon application in vapour compression refrigeration systems.
  • Record ID : 30032555
  • Languages: English
  • Subject: Technology
  • Source: 8th IIR International Conference on Sustainability and the Cold Chain. Proceedings: June 9-11 2024
  • Publication date: 2024/06/11
  • DOI: http://dx.doi.org/10.18462/iir.iccc2024.1048

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