Influence of condensate inundation on heat transfer of R134a condensing on three dimensional enhanced tubes and integral-fin tubes with high fin density.
Author(s) : JI W. T., ZHAO C. Y., ZHANG D. C., et al.
Type of article: Article
Summary
High performance integrally-finned tubes with external fin density of 54 and 56 fpi are designed and manufactured. The condensing heat transfer of R134a on five tubes with integral-fin density of 20, 37, 48, 54, 56 fpi and five different high performance three dimensional enhanced tubes are studied for their single horizontal tube. Condensate inundation experiment of the integrally-finned and three-dimensional enhanced tubes is also performed. The experimental results indicate that the specially-designed integrally-finned tubes No.4 and No.5 of high density show the highest overall heat transfer performance over the three dimensional enhanced tubes about 8%. For the lower fin density integrally-finned tube, the results show apparently no condensate inundation influence effect. For the higher fin density tubes, the heat transfer is firstly enhanced more or less with the condensate impinging from the above tube, then maintains nearly unchanged. For the 3-D enhanced tubes, the heat transfer is also enhanced with condensate inundation firstly except tube No.7, while it is all followed by a mild drop as the increase of condensate rate. As a whole, the performance of the integral-fin tube with high density is better than that of the 3-D enhanced tubes. [Reprinted with permission from Elsevier. Copyright, 2012].
Details
- Original title: Influence of condensate inundation on heat transfer of R134a condensing on three dimensional enhanced tubes and integral-fin tubes with high fin density.
- Record ID : 30003813
- Languages: English
- Source: Applied Thermal Engineering - vol. 38
- Publication date: 2012/05
- DOI: http://dx.doi.org/10.1016/j.applthermaleng.2012.01.029
Links
See other articles in this issue (7)
See the source
Indexing
-
Untersuchung des Wärmeübergangs und des inundat...
- Author(s) : GEBAUER T., LEIPERTZ A., FRÖBA A. P., et al.
- Date : 2009/11/18
- Languages : German
- Source: Deutsche Kälte-Klima-Tagung: 2009, Berlin.
View record
-
Condensation of R134a on horizontal integral-fi...
- Author(s) : FERNÁNDEZ-SEARA J., UHÍA F. J., DIZ R., et al.
- Date : 2010/04
- Languages : English
- Source: Applied Thermal Engineering - vol. 30 - n. 4
View record
-
Experimental study of the thermal hydraulic per...
- Author(s) : BANDARRA FILHO E. P., SAIZ JABARDO J. M.
- Date : 2014/01
- Languages : English
- Source: Applied Thermal Engineering - vol. 62 - n. 2
View record
-
Experimental investigation of a new low-approac...
- Author(s) : CENSI G., GIANCOTTI L., PADOVAN A.
- Date : 2018/07/09
- Languages : English
- Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
View record
-
Experimental study on condensation heat transfe...
- Author(s) : INOUE N., KIRIYAMA T., TAKAHASHI H.
- Date : 2011/08/21
- Languages : English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Formats : PDF
View record