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Analyse CFD et développement de corrélations pour un nouvel échangeur de chaleur multidirectionnel pour des applications à haute température et haute pression.

CFD-based analysis & correlation development for a novel multi-furcating heat exchanger for high temperature, high pressure applications.

Numéro : 2473

Auteurs : TANCABEL J., GERSTLER W., ERNO D., LING J., AUTE V., DE BOCK H. P. J., RADERMACHER R.

Résumé

The thermal efficiency of indirectly heated power cycles such as supercritical carbon dioxide (sCO2) closed Braytoncycles are typically limited by their heat exchangers (HXs), which require high heat transfer effectiveness whileoperating for tens of thousands of hours under high temperature (>800°C) and pressure (>80 bar) conditions. Previousliterature has shown that the use of nature-inspired furcating flow channels represents an exciting opportunity toimprove HX thermal-hydraulic performance. In this paper, we analyze the novel multi-furcating HX manifold concept,that was previously shown experimentally to reduce HX volume and mass compared to a baseline oil cooler by 50%and 67%, respectively. Computational fluid dynamics (CFD) simulations are utilized to analyze thermal-hydraulicperformance and fluid flow development. CFD-based correlations of Nusselt number and friction factor are developedfor performance prediction of a full, additively manufactured HX. The developed Nusselt number and friction factorcorrelations predict unit cell thermal-hydraulic performance within ±3% and ±5% for all simulated Reynolds numbers,respectively. The full HX would enable increased thermal efficiency of indirectly heated power cycles to reduce bothenergy consumption and emissions while also allowing opportunities in advanced aerospace applications.

Documents disponibles

Format PDF

Pages : 9

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : CFD-based analysis & correlation development for a novel multi-furcating heat exchanger for high temperature, high pressure applications.
  • Identifiant de la fiche : 30028487
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 05/2021
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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