ShareAn investigation of refrigerant void fraction in horizontal microfin tubes.
Author(s) : YASHAR D. A., WILSON M. J., KOPKE H. R., et al.
Summary
A series of experiments to determine void fraction during both condensation and evaporation have been performed in horizontal microfin tubes with refrigerants R134a and R410A. Four tubes were examined (7.3 mm and 8.9 mm diameters with axial and 18 degree helix angle microfins). Evaporation and adiabatic conditions in microfin tubes generally show similar void fraction trends as those found in smooth tubes. Condensation results for microfin tubes show a lower void fraction than for smooth tubes.
Details
- Original title: An investigation of refrigerant void fraction in horizontal microfin tubes.
- Record ID : 2003-1174
- Languages: English
- Source: ASHRAE Transactions. 2001 annual Meeting, Cincinnati, Ohio. Volume 107, part 2 + CD-ROM.
- Publication date: 2001/06/24
- Document available for consultation in the library of the IIR headquarters only.
Links
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Indexing
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Themes:
HFCs;
Mass transfer;
Two-phase flow;
Blends - Keywords: Two-phase flow; R410A; R134a; Microfin tube; Mass transfer; Tube; Heat transfer; Parameter; Miniaturization; Evaporation; Condensation
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An assessment of refrigerant heat transfer, pre...
- Author(s) : NEWELL T. A., SHAH R. K.
- Date : 2001/06/24
- Languages : English
- Source: ASHRAE Transactions. 2001 annual Meeting, Cincinnati, Ohio. Volume 107, part 2 + CD-ROM.
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Two phase pressure drop in microchannels.
- Author(s) : NIÑO V., PAYNE W., HRNJAK P., et al.
- Date : 2001/10/03
- Languages : English
- Source: Thermophysical Properties and Transfer Processes of New Refrigerants.
- Formats : PDF
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Condensation of refrigerants in horizontal micr...
- Author(s) : WANG H. S., HONDA H.
- Date : 2001/10/03
- Languages : English
- Source: Thermophysical Properties and Transfer Processes of New Refrigerants.
- Formats : PDF
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New correlation methods of evaporation heat tra...
- Author(s) : MAKISHI O., HONDA H.
- Date : 2005
- Languages : Japanese
- Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 22 - n. 4
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Effect of microfins on heat rejection in desupe...
- Author(s) : HRNJAK P., KONDOU C.
- Date : 2012/07/16
- Languages : English
- Source: 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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