Thermal Performance & Flow Characteristics of Staggered in Reversed Arc-Shaped Roughness of Artificial Roughened Solar Air Heater

DOI

10.2991/978-94-6239-693-7_32How to use a DOI?

Keywords

Friction Factor; Nusselt Number; Reverse arc roughness; Staggered element; Thermal performance

Abstract

This research investigates the flowing appearances in a solar air heater utilizing a gap reverse arc pattern integrated with staggered elements. The investigation was carried out with some roughness parameters and also arc inclination (α) of 600, 0.4 relative staggered rib pitch (p'/p), 1 the relative gaping width (g/e). The relative roughness height (e/Dₕ) was 0.0452 from a measurements. Reynolds numbers were varied systematically over a range 3000-15000 and relative roughness pitch, p/e, had taken through about 6-12. The test section was consisted of four plates which have reverse arc gap and staggered rib simulation on the surface. The hydrodynamic and thermal impact caused by this configuration was compared to plain ducts with staggered rib turbulators. The heat transfer and frictional performances were also improved markedly by the reverse gap arc arrangement with the counter flowed element arrays. Namely, the friction factor and Nusselt number were 3.89 and 2.19 times enhanced associate to plain duct. Comparative improvements were also witnessed in comparison to non-arc staggered configurations, thus attesting to the efficiency of reverse arc gap design, as it was capable of inducing turbulence and deflecting Thermoboundary layers for better thermal performance.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Surjeet Singh Rajpoot
AU  - Manish Singh Bharti
AU  - S. K. Nagpure
AU  - Sandeep Kumar Shah
AU  - Ankesh Kumar Pataskar
PY  - 2026
DA  - 2026/06/16
TI  - Thermal Performance & Flow Characteristics of Staggered in Reversed Arc-Shaped Roughness of Artificial Roughened Solar Air Heater
BT  - Proceedings of the International Conference on Intelligent Systems for a Sustainable Future (ISSF 2026)
PB  - Atlantis Press
SP  - 317
EP  - 328
SN  - 2589-4919
UR  - https://doi.org/10.2991/978-94-6239-693-7_32
DO  - 10.2991/978-94-6239-693-7_32
ID  - Rajpoot2026
ER  -