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Arnautovic, Zlatan ; Zimmermann, Conrad ; Hamza, Maya ; Heberle, Florian ; Kabelac, Stephan ; Brüggemann, Dieter:
Measurements of Thermophysical Properties of Ethanol + Hexamethyldisiloxane and
Ethanol + Octamethyltrisiloxane Mixtures in the Temperature Range of 293−343 K at 100 kPa.
In: Journal of Chemical & Engineering Data.
Bd. 68
(2023)
Heft 9
.
- S. 2223-2237.
ISSN 1520-5134
DOI: https://doi.org/10.1021/acs.jced.3c00336
Abstract
Due to its advantageous combination of individual properties, the utilization of zeotropic mixtures as working fluids can improve the overall efficiency in various thermodynamic cycle processes, such as organic Rankine cycle processes or Kalina processes. Therefore, the properties such as density, viscosity, and surface tension are measured for ethanol, hexamethyldisiloxane (MM), octamethyltrisiloxane (MDM), and their mixtures ethanol/MM and ethanol/MDM at 100 kPa and at different temperatures (293–343 K) and compositions. The measured fluid properties are investigated with different experimental systems: an IMETER measuring system is used for all three mentioned properties. Additionally, the density is determined by a density meter with an oscillating U-tube and the surface tension by a drop shape analyzer system. For the mixtures of ethanol/MM and ethanol/MDM, neither literature data exist nor distinct mixture parameters in REFPROP v.10.0 are available, but the present experimental results are compared with different mixing rules. Furthermore, specific parameters are developed with the Jouyban-Acree model in order to enable a calculation of the presented thermophysical properties for the given mixtures.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse > Lehrstuhl Technische Thermodynamik und Transportprozesse - Univ.-Prof. Dr.-Ing. Dieter Brüggemann Profilfelder > Emerging Fields > Energieforschung und Energietechnologie Forschungseinrichtungen > Forschungsstellen > Zentrum für Energietechnik - ZET Forschungseinrichtungen > Institute in Verbindung mit der Universität > TechnologieAllianzOberfranken (TAO) |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 26 Jan 2024 11:21 |
| Letzte Änderung: | 26 Jan 2024 11:21 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/88347 |