ShareAnalysis of void fraction in microchannels.
Author(s) : NIÑO V. G., HRNJAK P. S., NEWELL T. A.
Summary
Void fraction characteristics are analysed for rectangular multi-port microchannels tubes for refrigerant charge predictions. A 6-port and a 14-port microchannel, with hydraulic diameters of 1.54 mm and 1.02 mm, are examined for two-phase flow conditions. A new void fraction measurement technique has been developed. Two refrigerants, R134a and R410A, are tested. Void fraction results reveal a dependence on mass flux and hydraulic diameter. Flow visualization analysis is performed in order to visualize the effect of mass flux dependence.
Details
- Original title: Analysis of void fraction in microchannels.
- Record ID : 2003-1192
- Languages: English
- Source: 2002 Purdue conferences. 2002 compressor engineering & refrigeration and air conditioning conferences at Purdue [CD-ROM].
- Publication date: 2002/07/16
- Document available for consultation in the library of the IIR headquarters only.
Links
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Indexing
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Themes:
Heat transfer;
Mass transfer;
Two-phase flow - Keywords: Two-phase flow; Geometry; Gas; Calculation; Microchannel; Liquid; Volume; Vacuum; Tube; Parameter; Miniaturization; Heat exchanger
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A void fraction model for annular flow in horiz...
- Author(s) : HARMS T. M., LI D., GROLL E. A., et al.
- Date : 2002/07/16
- Languages : English
- Source: 2002 Purdue conferences. 2002 compressor engineering & refrigeration and air conditioning conferences at Purdue [CD-ROM].
- Formats : PDF
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Evaporative modelling in a thin-film region of ...
- Author(s) : PARK K., NOH K. J., LEE K. S.
- Date : 2002/07/16
- Languages : English
- Source: 2002 Purdue conferences. 2002 compressor engineering & refrigeration and air conditioning conferences at Purdue [CD-ROM].
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Flow boiling of binary mixtures in microchannel...
- Author(s) : PENG X. F., PETERSON G. P., WANG B. X.
- Date : 1996/04
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 39 - n. 6
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Transcritical R744 and two-phase flow through s...
- Author(s) : CHEN J. P., LIU J. P., CHEN Z. J., et al.
- Date : 2004/06
- Languages : English
- Source: International Journal of thermal Sciences - vol. 43 - n. 6
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An investigation of refrigerant void fraction i...
- Author(s) : YASHAR D. A., WILSON M. J., KOPKE H. R., et al.
- Date : 2001/06/24
- Languages : English
- Source: ASHRAE Transactions. 2001 annual Meeting, Cincinnati, Ohio. Volume 107, part 2 + CD-ROM.
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