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Development and performance enhancement of a compact elastocaloric refrigerator.

Number: 0231

Author(s) : XU S., CHEN Y., YAO S., WANG Y., QIAN S.

Summary

Elastocaloric cooling utilizes the phase transition of elastocaloric materials induced by uniaxial stress. Existing elastocaloric cooling prototypes were too cumbersome, as manifested by the state-of-the-art system-level volumetric cooling power of 0.53 W/L. To address this challenge, this study introduced our single-stage wire-based elastocaloric refrigerator as the baseline. The baseline refrigerator achieved a temperature span of 9.2 K in adiabatic condition and 5.8 K in refrigeration mode, and a system-level volumetric cooling power of 0.69 W/L. To further improve its performance, two new schemes were proposed, including substituting Ni-Ti wires with Ni-Ti plates and introducing a cascaded architecture. The single-stage Ni-Ti plate-based refrigerator could theoretically reach the temperature span of 12.0 K and 11.8 K in adiabatic condition and refrigeration mode, while the cascaded scheme achieved 22.6 K and 18.4 K, respectively. In addition, the single-stage plate-based refrigerator features 0.80 W/L volumetric cooling power, while the cascaded scheme provided 0.46 W/L.

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Details

  • Original title: Development and performance enhancement of a compact elastocaloric refrigerator.
  • Record ID : 30031589
  • 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.2023.0231

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