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Caractéristiques de la distribution de l’écoulement de boucles de thermosiphon diphasiques au CO2 entraînées par gravité et par pompe avec trois évaporateurs.

Flow distribution characteristics of gravity- and pump-driven CO2 two-phase thermosyphon loops with three evaporators.

Auteurs : TONG Z., WANG P., HAN Z., WANG W.

Type d'article : Article de la RIF

Résumé

Currently, most two-phase thermosyphon loop (TPTL) systems used in data centers feature a multi-evaporator design. The flow rate of the working fluid through each evaporator is one of the crucial factors affecting the cooling effect of the TPTL. Therefore, this paper conducts a comparative study on the flow distribution patterns of gravity- and pump-driven multi-evaporator TPTLs. The impacts of flow resistance and load distribution on each branch's flow distribution of working fluid are analyzed. It was found that the flow distributions of both gravity- and pump-driven TPTLs were influenced by load distribution. Under non-uniform load conditions, the flow rate tended to skew towards evaporators with higher loads. Additionally, the flow distribution of the gravity-driven TPTL was highly affected by individual branch flow resistance, which was markedly different from the pump-driven TPTL. Under uniform load conditions, the flow rate of the pump-driven TPTL was generally evenly distributed among the evaporators.

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Pages : 76-87

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Détails

  • Titre original : Flow distribution characteristics of gravity- and pump-driven CO2 two-phase thermosyphon loops with three evaporators.
  • Identifiant de la fiche : 30033822
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 173
  • Date d'édition : 05/2025
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2025.02.011

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