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Analysis of the effect of perforation in multi-v rib artificial roughened single pass solar air heater: - Part A.
- Source :
- Experimental Heat Transfer; 2023, Vol. 36 Issue 2, p163-182, 20p
- Publication Year :
- 2023
-
Abstract
- A detailed study on Solar Air Heaters (SAHs) with single-pass roughening with plastic net perforated multi-V and continuous multi-V ribs was investigated and compared for its effectiveness. Improvements in the Nusselt number ratio (Nu/Nus) and the friction factor ratio (f/fs) studied with the Reynolds number (Re) ranged from 2000–18000 for a relative roughness height (e/Dh) of 0.043, a relative roughness pitch (P/e) of 10, an aspect ratio (W/H) of 12, and an angle of attack (α) of 60°, maintaining a similar flow scenario. For a syntactically roughened channel with a perforated multi-V rib, the significant enhancement was recorded in thermo-hydraulic performance with a slight decrease in pumping power. The study was extended to analyze the effect of perforation in a double pass parallel flow SAH. [ABSTRACT FROM AUTHOR]
- Subjects :
- SOLAR air heaters
AIR heaters
NUSSELT number
REYNOLDS number
THERMAL hydraulics
Subjects
Details
- Language :
- English
- ISSN :
- 08916152
- Volume :
- 36
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Experimental Heat Transfer
- Publication Type :
- Academic Journal
- Accession number :
- 160933982
- Full Text :
- https://doi.org/10.1080/08916152.2021.1988761