Arwa M. Kadhim is an Assistant Lecturer in the department of Energy Engineering at College of Engineering, University of Baghdad.
Asst.Lect. Arwa obtained her bachelor's degree from the Department of Energy Engineering / College of Engineering / University of Baghdad in 2011, then obtained her master's degree in the same department in 2020.
Asst.Lect. Arwa interests in research related to renewable energies, especially in the field of solar energy
principles of energy engineering, and radiation detection and measurements
Artificial roughness on the absorber plate of a Solar Air Heater (SAH) is a popular technique for increasing its effective efficiency. The study investigated the effect of geometrical parameters of discrete multi-arc ribs (DMAR) installed below the SAH absorber plate on the effective efficiency. The effects of major roughness factors, such as number of gaps (Ng = 1-4), rib pitch (p/e = 4-16), rib height (e/D = 0.018-0.045), gab width (wg/e = 0.5-2), angle of attack ( = 30-75), and Reynolds number (Re= 2000-20000) on the performance of a SAH are studied. The performance of the SAH is evaluated using a top-down iterative technique. The results show that as Re rises, SAH-effective DMAR's efficiency first ascends to a specified value o
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