Analysis of the differential-growth method's potential for designing complex heat-transferring walls for compact heat exchanger

DS 122: Proceedings of the Design Society: 24th International Conference on Engineering Design (ICED23)

Year: 2023
Editor: Kevin Otto, Boris Eisenbart, Claudia Eckert, Benoit Eynard, Dieter Krause, Josef Oehmen, Nad├Ęge Troussier
Author: Seidler, Alexander; Holtzhausen, Stefan; Sander, Maximilian; Paetzold-Byhain, Kristin
Series: ICED
Institution: Technische Universit├Ąt Dresden
Section: Design Methods
Page(s): 0583-0592
DOI number: https://doi.org/10.1017/pds.2023.59
ISBN: -
ISSN: -

Abstract

Water scarcity and resource depletion can be expected during the climate crisis. Therefore, thermally loaded processes in particular, must be made more efficient in the future. Heat exchangers will play a key role in this optimization process. More efficient designs allow a greater heat flow to be removed from processes while mass flows remain constant. In this context, the heat-transferring wall of heat exchangers is a focus of current research on the design of heat exchangers. The aim is to increase the heat-transferring surface of the wall as much as possible and to keep the design space as compact as possible. Therefore, this study investigates the suitability of the differential-growth method for generating complex heat-transferring walls for heat exchangers using CFD-analysis. Firstly, a framework for generating the wall structures and a computational model for predicting the design influence of such structures for the thermal and fluid-dynamic behavior of the heat exchanger are presented. Thereby, the potential of such wall structures is analyzed in this study. Furthermore, the study identified weaknesses of such walls designed with the differential-growth method, which should be the focus of future investigations.

Keywords: Computational design methods, Design for Additive Manufacturing (DfAM), Simulation

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