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Transport Processes and Separation in Zero-Gravity Destillation

Preußer, Niklas ; Rieks, Sebastian ; Kenig, Eugeny Y. ; Stephan, Peter ; Gambaryan-Roisman, Tatiana (2018)
Transport Processes and Separation in Zero-Gravity Destillation.
In: IHTC 16 - International Heat Transfer Conference 16 Digital Libary, August 10-15, Beijing, China
doi: 10.1615/IHTC16.her.023300
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Zero-gravity distillation is a micro distillation process, in which the liquid flow is driven by capillary forces, similar to a heat pipe. In this study, the separation of ethanol-methanol mixtures in a zero-gravity distillation apparatus is investigated. Heat fluxes, temperature profiles and the fluid interface evolution are evaluated. The results show larger temperature differences between condenser and evaporator for a fluid mixture than for the pure fluids. For the investigated heat fluxes, the curvature change is dominated by gravitational forces. The curvature distribution is in good agreement with a numerical model. The results show that the process can be successfully used to separate an ethanol-methanol mixture despite the narrow vapour-liquid equilibrium of this fluid system. Under the conditions studied in this work, the separation efficiency of the process does not significantly depend on the heat flux.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Preußer, Niklas ; Rieks, Sebastian ; Kenig, Eugeny Y. ; Stephan, Peter ; Gambaryan-Roisman, Tatiana
Art des Eintrags: Bibliographie
Titel: Transport Processes and Separation in Zero-Gravity Destillation
Sprache: Englisch
Publikationsjahr: Januar 2018
Ort: Connecticut
Verlag: Begellhouse
Titel der Zeitschrift, Zeitung oder Schriftenreihe: IHTC 16 - International Heat Transfer Conference 16 Digital Libary, August 10-15, Beijing, China
Veranstaltungsort: Connecticut
DOI: 10.1615/IHTC16.her.023300
URL / URN: http://dx.doi.org/10.1615/IHTC16.her.023300
Kurzbeschreibung (Abstract):

Zero-gravity distillation is a micro distillation process, in which the liquid flow is driven by capillary forces, similar to a heat pipe. In this study, the separation of ethanol-methanol mixtures in a zero-gravity distillation apparatus is investigated. Heat fluxes, temperature profiles and the fluid interface evolution are evaluated. The results show larger temperature differences between condenser and evaporator for a fluid mixture than for the pure fluids. For the investigated heat fluxes, the curvature change is dominated by gravitational forces. The curvature distribution is in good agreement with a numerical model. The results show that the process can be successfully used to separate an ethanol-methanol mixture despite the narrow vapour-liquid equilibrium of this fluid system. Under the conditions studied in this work, the separation efficiency of the process does not significantly depend on the heat flux.

Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet für Technische Thermodynamik (TTD)
Profilbereiche
Profilbereiche > Thermo-Fluids & Interfaces
Hinterlegungsdatum: 08 Jan 2019 08:53
Letzte Änderung: 07 Aug 2019 13:30
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