Experimental investigation of additively manufactured high-temperature heat exchangers

verfasst von: Marco Fuchs, Julian Bodemer, Stephan Kabelac
Abstract: This article examines various additively manufactured heat exchangers for high-temperature applications. The heat exchangers differ in terms of their internal fin structure as well as optimizations in terms of manufacturing quality. Starting from a reference fin type, optimizations with focus on low pressure drop and high heat transfer are performed. The heat exchangers are investigated experimentally, focusing on the laminar flow regime between 60<Re<600. By means of a presented evaluation algorithm, the Nusselt numbers for the different fin types and designs are determined. The investigations show that even the smallest manufacturing deviations result in up to 70–120% higher f-factors and up to 30% higher Nu numbers. Taking these manufacturing deviations into account in the design process leads to very good agreement with the numerically determined values and the influence of surface roughness is comparatively small. Furthermore, the influence of internal heat radiation is of minor importance for the heat exchangers considered here.
Organisationseinheit(en): Institut für Thermodynamik
Typ: Artikel
Journal: International Journal of Heat and Mass Transfer
Band: 218
Anzahl der Seiten: 19
ISSN: 0017-9310
Publikationsdatum: 01.2024
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Physik der kondensierten Materie, Maschinenbau, Fließ- und Transferprozesse von Flüssigkeiten
Elektronische Version(en): https://doi.org/10.1016/j.ijheatmasstransfer.2023.124774 (Zugang: Offen)

BibTeX

@article{f5759deddbfa441488f2e8b0935f53c5,
title = "Experimental investigation of additively manufactured high-temperature heat exchangers",
abstract = "This article examines various additively manufactured heat exchangers for high-temperature applications. The heat exchangers differ in terms of their internal fin structure as well as optimizations in terms of manufacturing quality. Starting from a reference fin type, optimizations with focus on low pressure drop and high heat transfer are performed. The heat exchangers are investigated experimentally, focusing on the laminar flow regime between 60",
keywords = "Additive manufacturing, Experimental, Friction-factors, Heat exchanger, Heat transfer coefficients, High temperature",
author = "Marco Fuchs and Julian Bodemer and Stephan Kabelac",
note = "Funding Information: The authors would like to express their gratitude to the Federal Ministry for Economic Affairs and Climate Action (BMWK) based on a resolution of the German Bundestag and AiF Projekt GmbH , grant number “ KK5174901SN0 ” for supporting this research. ",
year = "2024",
month = jan,
doi = "10.1016/j.ijheatmasstransfer.2023.124774",
language = "English",
volume = "218",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Ltd.",
}