Share

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

Number: 2473

Author(s) : TANCABEL J., GERSTLER W., ERNO D., LING J., AUTE V., DE BOCK H. P. J., RADERMACHER R.

Summary

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.

Available documents

Format PDF

Pages: 9

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: CFD-based analysis & correlation development for a novel multi-furcating heat exchanger for high temperature, high pressure applications.
  • Record ID : 30028487
  • Languages: English
  • Subject: Technology
  • Source: 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2021/05
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (184)
See the conference proceedings

Indexing