About: Measurements of heterogeneous particles in superheated steam in turbines

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The relative importance of heterogeneous and homogeneous nucleation processes in steam turbines is still unclear. This paper presents a continued study of heterogeneous particles present in superheated power station steam. Previous work described a novel method to determine the specific number and size distribution of particles down to 3 nm. In this paper, further measurements at Power Plant Prunéřov II (PRUII) are reported along with improvements in the methods of sampling and analysis. In addition to sampling the superheated steam at 0.133 MPa, 174 °C, samples were also taken at higher pressure and temperature levels of 0.27 MPa, 250 °C. The concentration of particles was determined as 1.5x109 per kg of steam at the lower pressure and as 2.5x109 at the higher pressure. A diffusion battery was used to determine the size distribution of particles instead of the previously used Scanning Mobility Particle Sizer (SMPS). Compared to the SMPS results, the diffusion battery revealed a smaller geometric mean particle size. The relative importance of heterogeneous and homogeneous nucleation processes in steam turbines is still unclear. This paper presents a continued study of heterogeneous particles present in superheated power station steam. Previous work described a novel method to determine the specific number and size distribution of particles down to 3 nm. In this paper, further measurements at Power Plant Prunéřov II (PRUII) are reported along with improvements in the methods of sampling and analysis. In addition to sampling the superheated steam at 0.133 MPa, 174 °C, samples were also taken at higher pressure and temperature levels of 0.27 MPa, 250 °C. The concentration of particles was determined as 1.5x109 per kg of steam at the lower pressure and as 2.5x109 at the higher pressure. A diffusion battery was used to determine the size distribution of particles instead of the previously used Scanning Mobility Particle Sizer (SMPS). Compared to the SMPS results, the diffusion battery revealed a smaller geometric mean particle size. (en)
Title	Measurements of heterogeneous particles in superheated steam in turbines Measurements of heterogeneous particles in superheated steam in turbines (en)
skos:prefLabel	Measurements of heterogeneous particles in superheated steam in turbines Measurements of heterogeneous particles in superheated steam in turbines (en)
skos:notation	RIV/68407700:21220/12:00202948!RIV13-GA0-21220___
http://linked.open...avai/predkladatel	Fakulta strojní
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA101/09/1633)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kolovratník, Michal Bartoš, Ondřej
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta strojní
http://linked.open...dnocenehoVysledku	149029
http://linked.open...ai/riv/idVysledku	RIV/68407700:21220/12:00202948
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Heterogeneous nucleation; Steam turbine; Ultrafine aerosol particles (en)
http://linked.open.../riv/klicoveSlovo	Steam turbine Heterogeneous nucleation Ultrafine aerosol particles
http://linked.open...ontrolniKodProRIV	[06469D66C8EE]
http://linked.open...v/mistoKonaniAkce	Cambridge
http://linked.open...i/riv/mistoVydani	Cambridge
http://linked.open...i/riv/nazevZdroje	The Baumann Centenary Conference on The Science and Engineering of Non-Equilibrium Wet Steam Flows in Steam Turbines
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Development and application of new experimental methods to measure heterogeneous particles in superheated steam
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Bartoš, Ondřej Kolovratník, Michal Moravec, P. Hrubý, J. Jiříček, I. Zíková, N. Ždímal, V.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-09-10 (xsd:date)
number of pages	11 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Cambridge University Engineering Department
https://schema.org/isbn	978-0-903428-35-4
http://localhost/t...ganizacniJednotka	21220
is http://linked.open...avai/riv/vysledek of	Measurements of heterogeneous particles in superheated steam in turbines

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