Numerical study on condensation of R134a refrigerant in microchannel

The action of capillary forces during flow condensation of refrigerant R134a in rectangular microchannel is considered numerically using the annular flow model. It was shown that significant accumulation of the liquid occurs near the channel corners and causes the heat transfer enhancement. The heat...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. Conference series Vol. 1105; no. 1; pp. 12062 - 12065
Main Authors Safonov, S A, Kuznetsov, V V
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2018
Subjects
Annular flow
Capillary flow
Flow distribution
Heat transfer
Heat transfer coefficients
Microchannels
Numerical methods
Refrigerants
Online AccessGet full text

Cover

More Information
Summary:The action of capillary forces during flow condensation of refrigerant R134a in rectangular microchannel is considered numerically using the annular flow model. It was shown that significant accumulation of the liquid occurs near the channel corners and causes the heat transfer enhancement. The heat transfer related to the condensation is taken into account assuming the interface temperature is at saturation. The numerical method is validated against experiments and well predicts the flow patterns inside the microchannel and average heat transfer coefficients.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1105/1/012062