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Investigation of droplet nucleation in CCS relevant systems – design and testing of the expansion chamber
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SYSNO ASEP 0481935 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Investigation of droplet nucleation in CCS relevant systems – design and testing of the expansion chamber Author(s) Čenský, Miroslav (UT-L)
Hrubý, Jan (UT-L) RID, ORCID
Vinš, Václav (UT-L) RID, ORCID
Hykl, Jiří (UT-L) RID, ORCID
Šmíd, Bohuslav (UT-L) RIDNumber of authors 5 Article number 02015 Source Title EPJ Web of Conferences, EFM17 – Experimental Fluid Mechanics 2017. - Les Ulis : EDP Sciences, 2018 / Dančová P. - ISSN 2101-6275 Number of pages 5 s. Publication form Online - E Action Experimental Fluid Mechanics 2017 Event date 21.11.2017 - 24.11.2017 VEvent location Mikulov Country CZ - Czech Republic Event type WRD Language eng - English Country FR - France Keywords carbon capture and storage ; expansion chamber ; experiment Subject RIV BJ - Thermodynamics OECD category Thermodynamics R&D Projects 7F14466 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA16-02647S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 UT WOS 000454317800016 EID SCOPUS 85049400325 DOI 10.1051/epjconf/201818002015 Annotation A unique in-house designed experimental apparatus for investigation of nucleation of droplets in CCS relevant systems is being developed by the present team. The apparatus allows simulating various processes relevant to CCS technologies. Gaseous mixtures with CO2 are prepared in a Mixture Preparation Device (MPD) based on accurate adjustment of flow rates of individual components [EPJ Web of Conferences 143, 02140 (2017)]. The mixture then flows into an expansion chamber, where it undergoes a rapid adiabatic expansion. As a consequence of adiabatic cooling, the mixture becomes supersaturated and nucleation and simultaneous growth of droplets occurs. In this study, we describe the design and testing of the expansion part of the experimental setup. The rapid expansion was realized using two valve systems, one for low pressures (up to 0.7 MPa) and the other for high pressures (up to 10 MPa). A challenge for a proper design of the expansion system is avoiding acoustic oscillations. These can occur either in the mode of Helmholtz resonator, where the compressible gas in the chamber acts as a spring and the rapidly moving gas in the valve system as a mass, or in the flute mode, where acoustic waves are generated in a long outlet tubing. 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 2019
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