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Numerical Modelling of Hydrothermal Fluid Flow and Heat Transfer in a Tubular Heat Exchanger Under Near Critical Conditions by Cai Y. Ma; Christopher J. Tighe; Robert I. Gruar; Tariq Mahmud; Jawwad A. Darr; Xue Z. Wang is a Engineering article available to read on EtoBox.

What is Numerical Modelling of Hydrothermal Fluid Flow and Heat Transfer in a Tubular Heat Exchanger Under Near Critical Conditions about?

Continuous hydrothermal flow synthesis processes are of interest for the manufacture of nanoparticle metal oxides. In such processes, nanoparticle nuclei (in a slurry) which are initially formed, may continue to grow and agglomerate to generate larger particles as they pass through the synthesis apparatus. These processes can widen the size distribution and also affect the ultimate particle shape in the recovered product. Therefore, fast cooling or quenching the initial nanoparticle slurry using a highly efficient heat exchanger may minimise or stop further crystallisation/agglomeration processes. This may be achieved by optimising the design of the heat exchanger based on detailed examination of flow patterns and heat transfer profiles using a computational fluid dynamics (CFD) modelling approach. The predicted flow and heat transfer patterns in the heat exchanger can also provide detailed information for the identification of any heat transfer deterioration or hot spots where further reactions may occur. This paper employs a CFD modelling approach to simulate the heat transfer processes in a tubular heat exchanger of a continuous hydrothermal flow synthesis system and also to exa

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Author

Cai Y. Ma; Christopher J. Tighe; Robert I. Gruar; Tariq Mahmud; Jawwad A. Darr; Xue Z. Wang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0896-8446)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)