Design of an experimental apparatus for measurement of the surface tension of metastable fluids

0392001 - ÚT 2014 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Vinš, Václav - Hrubý, Jan - Hykl, Jiří - Blaha, Jan - Šmíd, Bohuslav
Design of an experimental apparatus for measurement of the surface tension of metastable fluids.
EFM12 - EXPERIMENTAL FLUID MECHANICS 2012. Liberec: Technical University of Liberec, 2013 - (Dančová, P.; Novotný, P.). EPJ Web of Conferences, 45. ISBN 978-80-7372-912-7. ISSN 2100-014X.
[Experimental Fluid Mechanics 2012 /7./. Hradec Králové (CZ), 20.11.2012-23.11.2012]
Grant CEP: GA AV ČR IAA200760905; GA ČR(CZ) GPP101/11/P046; GA ČR(CZ) GAP101/11/1593
Grant ostatní: AV ČR interní podpora(CZ) M100761201
Institucionální podpora: RVO:61388998
Klíčová slova: experiment * metastable * surface tension * water
Kód oboru RIV: BJ - Termodynamika
http://dx.doi.org/10.1051/epjconf/20134501094

A unique experimental apparatus for measurement of the surface tension of aqueous mixtures has been designed, manufactured, and tested in our laboratory. Functionality of all main components of the apparatus, e.g., glass chamber with the capillary tube, temperature control unit consisting of two thermostatic baths with special valves for rapid temperature jumps, helium distribution setup allowing pressure variation above the liquid meniscus inside the capillary tube, has been successfully tested. Preliminary results for the surface tension of the stable and metastable supercooled water measured by the capillary elevation method at atmospheric pressure are provided. The surface tension of water measured at temperatures between +26 °C and –11 °C is in good agreement with the extrapolated IAPWS correlation.
Trvalý link: http://hdl.handle.net/11104/0228716