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Étude expérimentale d'un régénérateur élastocalorique actif à tubes décalés.

Experimental investigation of a staggered-tube active elastocaloric regenerator.

Auteurs : EMAIKWU N., CATALINI D., MUEHLBAUER J., HWANG Y., TAKEUCHI I., RADERMACHER R.

Type d'article : Article de la RIF

Résumé

Elastocaloric solid-state refrigerants have a lower environmental impact compared to conventional vapor compression refrigerants, but they require significant advancements to gain widespread implementation. Two barriers that prevent adoption are the low-temperature lift and poor fatigue life. This paper presents a compression-loaded, staggered-tube active elastocaloric regenerator designed to address these challenges, along with the optimal operating parameters for the system. We conducted a sensitivity analysis on a single-stage device and identified fluid-solid ratio, cycle time, and applied strain as key factors affecting thermal response. Test results for the regenerator yielded a maximum steady-state temperature span of 16.6 K (9.7 K in heating and 6.8 K in cooling) at 4% strain and under zero load conditions, over two times larger than the baseline value. The tubes also withstood over 30,000 cycles without failure. The outcomes shown in this paper contribute to the foundation—in both design and operating conditions—of growing works aimed at demonstrating high-performing caloric devices.

Documents disponibles

Format PDF

Pages : 370-377

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental investigation of a staggered-tube active elastocaloric regenerator.
  • Identifiant de la fiche : 30031982
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 153
  • Date d'édition : 09/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.09.006

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