Number of the records: 1
Investigation of Condensation Nuclei in Superheated Steam in Steam Turbines
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SYSNO ASEP 0397301 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV Záznam nebyl označen do RIV Název Investigation of Condensation Nuclei in Superheated Steam in Steam Turbines Tvůrce(i) Hrubý, Jan (UT-L) RID, ORCID
Kolovratník, M. (CZ)
Bartoš, Ondřej (UT-L) RID, ORCID
Moravec, Pavel (UCHP-M) RID, ORCID, SAI
Zíková, Naděžda (UCHP-M) RID, ORCID, SAI
Ždímal, Vladimír (UCHP-M) RID, ORCID, SAI
Jiříček, I. (CZ)Zdroj.dok. 16th International Conference on the Properties of Water and Steam. - Londýn : British & Irish Association for Properties of Water and Steam (BIAPWS) a Institution of Mechanical Engineers, 2013 Rozsah stran s. 016-016 Poč.str. 1 s. Forma vydání Nosič - C Akce International Conference on the Properties of Water and Steam /16./ ICPWS Datum konání 01.09.2013-05.09.2013 Místo konání University of Greenwich, Londýn Země GB - Velká Británie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova heterogeneous nucleation ; steam turbine ; diffusion battery Vědní obor RIV BJ - Termodynamika Vědní obor RIV – spolupráce Ústav chemických procesů - Fyzikální chemie a teoretická chemie Institucionální podpora UT-L - RVO:61388998 ; UCHP-M - RVO:67985858 Anotace The formation of droplets in low-pressure steam turbines has a significant impact on the efficiency of energy conversion due to the strongly non-equilibrium nature of this process. The condensed water further erodes the turbine blades. The relative importance of heterogeneous and homogeneous nucleation processes in steam turbines is still unclear. The knowledge of the heterogeneous particles size distribution and other their properties are useful for the modelling of the phase transition during the steam expansion as well. We present measurements of heterogeneous particles in superheated (dry) steam prior to condensation onset. The measurements were performed using a special steam sampling device and, alternatively, a diffusion battery (DB) of the scanning mobility particle sizer (SMPS). Compared to SMPS results, DB revealed a smaller geometric mean particle size. The concentrations of particles determined in the steam turbines do not explain the total mass of chemicals present in condensed samples of steam. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2014
Number of the records: 1