Experimental investigation of solar air heater duct with discrete V-rib integrated with staggered elements
| Autor: | Sumer Singh Patel, Atul Lanjewar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | International Journal of Sustainable Engineering, Vol 14, Iss 2, Pp 162-171 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1939-7038 1939-7046 19397038 |
| DOI: | 10.1080/19397038.2020.1737752 |
| Popis: | This paper presents an experimental investigation of heat transfer and friction factor in a rectangular duct with discrete V-rib integrated with staggered elements. The Reynolds number (Re) of 3000–12,000, ratio of staggered element size to rib height (r/e) of 2–5.5, relative roughness pitch (p/e) of 12, relative roughness height (e/Dh) of 0.045, flow angle of attack (α) of 60°, relative gap width (g/e) of 1, relative staggered element position (p’/p) of 0.65 and number of gaps (Ng) of 6. The maximum augmentation in Stanton number is 1.90 times over the smooth duct and maximum thermal efficiency is obtained 86% corresponding to ratio of staggered element size to rib height (r/e) of 3.5. |
| Databáze: | Directory of Open Access Journals |
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