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Conception d'un échangeur de chaleur à plaques pour le coulis de glace dans les applications avec un frigorigène secondaire : validation expérimentale d'une nouvelle approche de simulation.

Plate heat exchanger design for ice slurry in secondary refrigerant applications: Experimental Validation of a new simulation approach.

Numéro : 1115

Auteurs : HEFNY S., THOMAS C., STEFFAN C., WENZEL T., HESSE U., SAFARIK M., HONKE M.

Résumé

One of the main components of an ice slurry secondary refrigerant distribution system is the preferably most efficient heat exchanger, where ice crystals absorb heat almost isothermal. A lot of research work has been carried out so far in order to understand the principles of thermal and hydraulic behaviour of water-based ice slurries in such heat exchangers. On the contrary, there is still a lack of comprehensive guidelines for system design for a stable application and consequently for meeting industrial requirements. Therefore, the pressure drop behaviour of ice slurries has been analysed experimentally by varying a wide range of influencing system parameters (e.g. ice generation, storage time). Based on the experimental data a new simulation approach was developed to predict the pressure drop and blocking behaviour. In a first step the simulation model has been validated for a base case (pipe flow). In a second step the model was modified for complex cross-sections and a validation was performed by using a semi-transparent plate heat exchanger. The presented investigations include a comparison of visualized test and simulation results. The presented results lead to a better understanding of the ice slurry behaviour inside complex heat exchanger geometries.

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Plate heat exchanger design for ice slurry in secondary refrigerant applications.

Pages : 6

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Détails

  • Titre original : Plate heat exchanger design for ice slurry in secondary refrigerant applications: Experimental Validation of a new simulation approach.
  • Identifiant de la fiche : 30027966
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
  • Date d'édition : 07/12/2020
  • DOI : http://dx.doi.org/10.18462/iir.gl.2020.1115

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