Re-evaluation of experimental data on the second virial coefficient for steam and development of its analytical representation as a function of the internal energy

0392028 - ÚT 2014 RIV FR eng C - Conference Paper (international conference)
Duška, Michal - Hrubý, Jan
Re-evaluation of experimental data on the second virial coefficient for steam and development of its analytical representation as a function of the internal energy.
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]
R&D Projects: GA AV ČR IAA200760905; GA ČR GA101/09/1633; GA MŠMT LA09011; GA ČR(CZ) GAP101/11/1593
Institutional support: RVO:61388998
Keywords : second virial coefficien * reevaluation of experimental data
Subject RIV: BJ - Thermodynamics
http://dx.doi.org/10.1051/epjconf/20134501024

The work presented in the paper is a part of broader effort to develop a formulation of the properties of dry and metastable steam suitable for CFD computations. The second virial coefficient was evaluated from volumetric (pvT) data, calorimetric measurements for saturated vapor, steam expansion experiments (measurements of the Joule–Thomson coefficient and the isothermal throttling coefficient) and measurements of the speed of sound. To accurately evaluate the uncertainty of calorimetric measurements, the uncertainty of the temperature derivative of the saturation pressure was determined based on refitting of the IAPWS saturation pressure formula to the experimental data. Also an analytical formula is presented to compute the second virial coefficient as function of internal energy in a range corresponding to the ideal-gas temperatures from 273.16 K to 1073.15 K.
Permanent Link: http://hdl.handle.net/11104/0228702