Experimental condensing two-phase frictional pressure drop inside mini-channels. Comparisons and new model development

The present paper reports condensing two-phase flow pressure drop inside a mini-channel tube with 1.16mm inner hydraulic diameter with R1234yf, R134a and R32. According to the available data, most of the models checked capture the trend correctly. Experimental data are analysed to show the influence...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2014-08, Vol.75, p.581-591
Main Authors: López-Belchí, Alejandro, Illán-Gómez, Fernando, Vera-García, Francisco, García-Cascales, Jose R.
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Condensing
Correlation
Deviation
Fluid flow
Frictional pressure gradient
Mass transfer
Mini-channels
Pressure drop
Two phase flow condensation
Two-phase flow multiplier
Vapour
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Summary:The present paper reports condensing two-phase flow pressure drop inside a mini-channel tube with 1.16mm inner hydraulic diameter with R1234yf, R134a and R32. According to the available data, most of the models checked capture the trend correctly. Experimental data are analysed to show the influence of saturation temperature, mass velocities, vapour quality and fluid properties in pressure drop. Finally, a new correlation model is presented with a mean absolute relative deviation (MARD) value of 8.32% reducing the best correlation MARD by more than 34%.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2014.04.003