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Properties of engineering liquids based on hydrofluoroethers – Modeling and experiments at 0.1 MPa
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SYSNO ASEP 0587332 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Properties of engineering liquids based on hydrofluoroethers – Modeling and experiments at 0.1 MPa Author(s) Aminian, Ali (UT-L)
Prokopová, Olga (UT-L) ORCID
Jäger, A. (DE)
Štejfa, V. (CZ)
Richter, M. (DE)
Vinš, Václav (UT-L) RID, ORCIDNumber of authors 6 Year of issue 2024 Source Title Twenty-Second Symposium on Thermophysical Properties and Eighteenth International Conference on the Properties of Water and Steam. - Boulder, 2024 Number of pages 1 s. Publication form Online - E Action Symposium on Thermophysical Properties /22./ and International Conference on the Properties of Water and Steam /18./ Event date 23.06.2024 - 28.06.2024 VEvent location Colorado Country US - United States Event type WRD Language eng - English Country US - United States Keywords heat transfer liquid ; hydrofluorether ; density ; surface tension ; modeling OECD category Thermodynamics R&D Projects GF24-10191K GA ČR - Czech Science Foundation (CSF) GA22-03380S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 Annotation Hydrofluoroethers (HFEs), belonging to the family of so-called Novec fluids introduced by the 3M company, are technically interesting liquids with several favorable properties like zero ODP, low GWP, dielectric behavior, and low viscosity. The HFE liquids have application potential as heat transfer media or cleaning agents in electronics industry, cooling of high-performance computing, or as admixtures in refrigerant blends. In this presentation, we summarize the efforts of our international team in describing the thermophysical properties of a series of five HFE liquids ranging from HFE-7000 to HFE-7500. The experiments covered so far measurement of density at 0.1 MPa using the single singer buoyancy technique and the vibrating tube densimeter and of surface tension using the du Noüy ring and Wilhelmy plate methods. The influence of isomeric composition of HFE-7100 and HFE-7200 on the liquid density was recently described. In the theoretical research, the predictive equations of state of PC-SAFT and Peng-Robinson type were employed on the modeling of VLE and a full set of volumetric and caloric properties. Recently, the force field for the selected HFEs has been derived from ab-initio calculations and used for the MD simulations of a set of transport properties including the thermal conductivity, dynamic viscosity, and self-diffusion coefficient. Current activities include measurement of transport properties and their prediction using the entropy and density scaling. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2025
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