Mass flow rate correlation for two-phase flow of R218 through a capillary tube

0327182 - ÚT 2010 RIV GB eng J - Článek v odborném periodiku
Vinš, Václav - Vacek, V.
Mass flow rate correlation for two-phase flow of R218 through a capillary tube.
Applied Thermal Engineering. Roč. 29, 14-15 (2009), s. 2816-2823. ISSN 1359-4311
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: artificial neural network * capillary tube * mass flow rate correlation * R218
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 1.922, rok: 2009
http://www.sciencedirect.com/science?_ob=PublicationURL&_cdi=5687&_pubType=J&_acct=C000034318&_version=1&_urlVersion=0&_userid=640952&md5=fc314a471a010545ee185394a6c8f5f7&jchunk=29#29

This paper presents some experimental results of refrigerant two-phase flow through a capillary tube. The data was obtained for fluorinert refrigerant R218, which is used in some special vapor cooling circuits, e.g. in various particle detectors at the CERN international research centre. An analytical correlation for mass flow rate of R218 was prepared on the bases of dimensionless parameters derived from the Buckingham π-theorem. Two approaches were compared: (a) the conventional power law function and (b) correlation determined with the use of an artificial neural network. Measured data were also correlated with other mass flow rate correlations presented in literature.
Trvalý link: http://hdl.handle.net/11104/0174070