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http://dx.doi.org/10.18419/opus-13617
Autor(en): | Fugmann, Hannes Martens, Sebastian Balzer, Richard Brenner, Martin Schnabel, Lena Mehring, Carsten |
Titel: | Performance evaluation of wire cloth micro heat exchangers |
Erscheinungsdatum: | 2020 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 16 |
Erschienen in: | Energies 13 (2020), No. 715 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-136368 http://elib.uni-stuttgart.de/handle/11682/13636 http://dx.doi.org/10.18419/opus-13617 |
ISSN: | 1996-1073 |
Zusammenfassung: | The purpose of this study is to validate a thermal-hydraulic simulation model for a new type of heat exchanger for mass, volume, and coolant/refrigerant charge reduction. The new heat exchanger consists of tubes with diameters in the range of 1 mm and wires in the range of 100 μm, woven together to form a 200×200×80 mm3 wire cloth heat exchanger. Performance of the heat exchanger has been experimentally evaluated using water as inner and air as outer heat transfer medium. A computational thermal and fluid dynamic model has been implemented in OpenFOAM®. The model allows variation of geometry and operating conditions. The validation of the model is based on one single geometry with an opaque fabric and air-side velocities between 1 and 7 m/s. The simulated and measured pressure drops are found to be in good agreement with a relative difference of less than 16%. For the investigated cases, the effective heat transfer coefficients are in very good agreement (less than 5%) when adapting the contact resistance between tubes and wires. The numerical model describes the fluid flow and heat transfer of the tested heat exchanger with adequate precision and can be used for future wire cloth heat exchanger dimensioning for a variety of applications. |
Enthalten in den Sammlungen: | 04 Fakultät Energie-, Verfahrens- und Biotechnik |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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energies-13-00715-v2.pdf | 13,77 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons