Název: Experimental Investigation of Throttling Process Affected by Gas Impurities
Autoři: Vinš, Václav ; Vacek, V.
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Conference Experimental Fluid Mechanics 2009, Liberec (CZ), 2009-11-25 / 2009-11-27
Rok: 2009
Jazyk: eng
Abstrakt: 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.
Klíčová slova: capillary tube; experiment; non-condensing gases; throttling process
Číslo projektu: CEZ:AV0Z20760514 (CEP)
Zdrojový dokument: Experimental Fluid Mechanics 2009, ISBN 978-80-7372-538-9

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0177975

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-40771


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference