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Experimental Investigation of Throttling Process Affected by Gas Impurities
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SYSNO ASEP 0332847 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Experimental Investigation of Throttling Process Affected by Gas Impurities Tvůrce(i) Vinš, Václav (UT-L) RID, ORCID
Vacek, V. (CZ)Zdroj.dok. Experimental Fluid Mechanics 2009, Proceedings of the International Conference. - Liberec : Technical University of Liberec, 2009 / Vít T. ; Dančová P. ; Dvořák V. - ISBN 978-80-7372-538-9 Rozsah stran s. 411-417 Poč.str. 7 s. Forma vydání CD ROM - CD ROM Akce International Conference Experimental Fluid Mechanics 2009 Datum konání 25.11.2009-27.11.2009 Místo konání Liberec Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova capillary tube ; experiment ; non-condensing gases ; throttling process Vědní obor RIV BK - Mechanika tekutin CEZ AV0Z20760514 - UT-L (2005-2011) Anotace The throttling process in a small-diameter tube – capillary tube – was experimentally investigated in this study. A special testing capillary tube equipped with precise temperature and pressure sensors was used to describe the effect of gas impurities, i.e. non-condensing gases (nitrogen in our case), on the flow of throttled refrigerant R218. Total pressure at the onset of vaporization was increased by partial pressure of contaminating gas. Therefore, the two-phase flow of gas-contaminated refrigerant started to be generated notably earlier than in the case of pure refrigerant flow. Mass flow rate of refrigerant delivered through capillary tube decreased even by 20 % in some cases. The experimental data were compared with a numerical simulation of pure refrigerant flow in capillary tube. 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 2010
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