Partager

Document IIF

Optimisation et analyse exergétique de frigorigènes respectueux de l’environnement dans des systèmes très efficaces fonctionnant avec des hydrates.

Optimization and exergy analysis of eco-friendly refrigerants in high-efficiency hydrate-based refrigeration systems.

Auteurs : ZHANG W., ZHOU S., GUO K., ZANG Y., JIANG X., QU Z., GAO H., CHEN J.

Type d'article : Article de la RIF

Résumé

Hydrate-based refrigeration systems (HBRS), valued for their high energy efficiency and environmental friendliness, face optimization challenges requiring insights into multi-parameter interactions and energy flow control. This study systematically quantified the effects of hydrate mass fraction in slurry (0.40–0.90) and mechanical efficiency of pressurized transport equipment (40 % –90 % ) on system performance, overcoming the singleparameter focus of prior research by introducing tetrahydrofuran (THF) and developing four underground water-cooled HBRS configurations (A–D). Aspen Plus simulations and multi-dimensional exergy analysis revealed that at a hydrate mass fraction of 0.60 and 80 % fluid transport efficiency, the coefficient of performance (COP) ranges from 7.96 to 9.01 with HBRS-D achieving a 13.2 % COP improvement via cascade cold energy utilization. Sensitivity analysis identified compressor mechanical efficiency as the primary performance factor, followed by hydrate content and refrigerant pump efficiency. Exergy losses concentrated in hydrate formation/dissociation heat transfer (49 % ), compressor compression (24 %), and refrigerant pump transport (23 %). The system exhibited natural exergy efficiency of 23.32 % –25.40 % and actual exergy efficiency of 20.32 % –22.38 % . These findings established a parameter-system-efficiency optimization model based on exergy loss distribution. The design of key parameters in this study (with a hydrate mass fraction of 60 % and equipment efficiency of 80 %) features significant operability and engineering applicability, providing a solution with both innovativeness and implementation paths for breaking through the bottleneck of traditional refrigeration energy consumption.

Documents disponibles

Format PDF

Pages : 15 p.

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 : Optimization and exergy analysis of eco-friendly refrigerants in high-efficiency hydrate-based refrigeration systems.
  • Identifiant de la fiche : 30034367
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 179
  • Date d'édition : 11/2025
  • DOI : http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2025.08.012

Liens


Voir d'autres articles du même numéro (29)
Voir la source

Indexation