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An energy-saving control strategy for continuous sorption refrigerators: mitigating transient heat loads to improve COP.

Auteurs : LU L., YING K., JIANG Y., YAN L., JIANG Z., WU Y., LIU S.

Type d'article : Article de la RIF

Résumé

The scalable application of quantum technology is severely constrained by the massive energy consumption of sub-Kelvin cryogenic infrastructures. In continuous sorption cooling systems, the alternating operation of refrigeration units introduces significant transient parasitic heat loads, which serve as a primary source of thermodynamic irreversibility and efficiency degradation. This study addresses this energy challenge by estab lishing a physics-based transient thermal resistance network model coupled with gas dynamics to quantify the energy dissipation mechanisms during critical switching phases. Guided by this model, we propose an energy- oriented "soft-switching" control strategy that optimizes the heating rate of the gas-gap heat switches (GGHS). Unlike conventional step-heating methods that induce severe thermal shocks, this strategy aligns the gas desorption rate with the heat transfer capacity. Experimental validation demonstrates that the optimized strategy reduces the accumulated transient parasitic heat load by 43.5% in a single cycle. Consequently, the system achieves a temperature stability better than 50 mK at 1 K, while simultaneously improving the cycle-averaged Coefficient of Performance (COP) by 9.5%. This study reveals that active management of transient heat flows is a vital pathway to enhancing the thermodynamic efficiency of continuous cryogenic systems, providing a practical energy-saving framework for future large-scale quantum applications.

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Format PDF

Pages : 11

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    20 €

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    Gratuit

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Détails

  • Titre original : An energy-saving control strategy for continuous sorption refrigerators: mitigating transient heat loads to improve COP.
  • Identifiant de la fiche : 30034976
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 188
  • Date d'édition : 08/2026
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2026.106965

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