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Measurements of Thermophysical Properties of Ethanol + Hexamethyldisiloxane and Ethanol + Octamethyltrisiloxane Mixtures in the Temperature Range of 293−343 K at 100 kPa

Title data

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. Vol. 68 (2023) Issue 9 . - pp. 2223-2237.
ISSN 1520-5134
DOI: https://doi.org/10.1021/acs.jced.3c00336

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes > Chair Engineering Thermodynamics and Transport Processes - Univ.-Prof. Dr.-Ing. Dieter Brüggemann
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Units > Zentrum für Energietechnik - ZET
Research Institutions > Affiliated Institutes > TechnologieAllianzOberfranken (TAO)
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 26 Jan 2024 11:21
Last Modified: 26 Jan 2024 11:21
URI: https://eref.uni-bayreuth.de/id/eprint/88347