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Mass flow rate correlation for two-phase flow of R218 through a capillary tube
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SYSNO ASEP 0327182 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Mass flow rate correlation for two-phase flow of R218 through a capillary tube Author(s) Vinš, Václav (UT-L) RID, ORCID
Vacek, V. (CZ)Source Title Applied Thermal Engineering. - : Elsevier - ISSN 1359-4311
Roč. 29, 14-15 (2009), s. 2816-2823Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords artificial neural network ; capillary tube ; mass flow rate correlation ; R218 Subject RIV BK - Fluid Dynamics CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000268979000006 DOI 10.1016/j.applthermaleng.2009.02.001 Annotation 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2010
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