Heat transfer augmentation along the tube wall of a louvered fin heat exchanger using practical delta winglets.
Author(s) : LAWSON M. J., THOLE K. A.
Type of article: Article, Review
Summary
Delta winglets are known to induce the formation of streamwise vortices and increase heat transfer between a working fluid and the surface on which the winglets are placed. This study investigates the use of delta winglets to augment heat transfer on the tube surface of louvered fin heat exchangers. It is shown that delta winglets placed on louvered fins produce augmentations in heat transfer along the tube wall as high as 47% with a corresponding increase of 19% in pressure losses. Manufacturing constraints are considered in this study whereby piercings in the louvered fins resulting from stamping the winglets into the louvered fins are simulated. Comparisons of measured heat transfer coefficients with and without piercings indicate that piercings reduce average heat transfer augmentations, but significant increases still occur with respect to no winglets present. [Reprinted with permission from Elsevier. Copyright, 2007].
Details
- Original title: Heat transfer augmentation along the tube wall of a louvered fin heat exchanger using practical delta winglets.
- Record ID : 2008-2057
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 51 - n. 9-10
- Publication date: 2008/05
Links
See other articles in this issue (7)
See the source
Indexing
-
Effects of winglets to augment tube wall heat t...
- Author(s) : SANDERS P. A., THOLE K. A.
- Date : 2006/10
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 49 - n. 21-22
View record
-
HEAT TRANSFER ENHANCEMENT. A REVIEW OF TECHNIQU...
- Author(s) : REAY D. A.
- Date : 1991
- Languages : English
- Source: Heat Recov. Syst. CHP - vol. 11 - n. 1
View record
-
Numerical investigation of fluid flow and heat ...
- Author(s) : MALAPURE V. P., MITRA S. K., BHATTACHARYA A.
- Date : 2007/02
- Languages : English
- Source: International Journal of thermal Sciences - vol. 46 - n. 2
View record
-
ENHANCEMENT OF CONDENSATION HEAT TRANSFER.
- Author(s) : HONDA H.
- Date : 1990
- Languages : Japanese
- Source: Refrigeration - vol. 65 - n. 757
View record
-
EXPERIMENTAL STUDY OF HEAT TRANSFER OF PARALLEL...
- Author(s) : KUROSAKI Y.
- Date : 1985
- Languages : Japanese
- Source: Trans. JAR - vol. 2 - n. 2
View record