Authors : Nilesh Singh; D.S.Rawat

Volume/Issue : Volume 8 - 2023, Issue 5 - May

Google Scholar : https://bit.ly/3TmGbDi

Scribd : https://bit.ly/45SWWvR

DOI : https://doi.org/10.5281/zenodo.8022383

Abstract : - In the study of heat transmission, artificial roughness is crucial. It offers a smooth absorber plate surface to boost the airflow turbulence across it. Artificially applied roughness additionally increase the absorber plate’s surface area and produce vortices and eddy in the airflow, which raises the air's heat transfer coefficient. Varied artificial roughness with varied forms and geometries has different heat transmission rates. In the current study, different artificial roughness components employed in solar air heater ducts were studied. This paper's goal is to investigate how artificial roughness components affect heat transfer rates with minimal frictional cost. Tabulated forms of developed Correlations proposed by various authors for heat transmission and frictional factor are given. The present article gives immense support to researchers who are researching new artificial roughness for enhancing the heat transmission rate in solar air heater ducts and comparing different artificial roughness that are already studied.

Keywords : Solar air heater duct, artificial roughness, convective heat transmission coefficient, frictional factor.