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Use of artificial roughness for performance enhancement of solar air heaters—a review.
- Source :
- International Journal of Green Energy; 2019, Vol. 16 Issue 7, p551-572, 22p
- Publication Year :
- 2019
-
Abstract
- The performance characteristics of a solar air heater can effectively be improved by providing artificial roughness in the form of protrusions and dimples of various shapes, sizes, and orientations on the underside of heated surface. An extensive literature review on artificial roughness elements has been carried and the correlations developed for heat transfer and friction factor for roughened solar air collector have been discussed and presented in this paper. The performance parameter has also been computed and compared with various kinds and shapes of roughness geometries using correlations developed by various investigators. The optimum values of the roughness parameters obtained by several investigators have also been discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- SOLAR air heaters
SOLAR collectors
HEAT transfer
Subjects
Details
- Language :
- English
- ISSN :
- 15435075
- Volume :
- 16
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- International Journal of Green Energy
- Publication Type :
- Academic Journal
- Accession number :
- 135802435
- Full Text :
- https://doi.org/10.1080/15435075.2019.1598418