Theoretical investigation of a solar airheater roughened by ribs and grooves
1Department of Mechanical Engineering, Adana Science and Technology University, Adana, TURKEY
2Department of Mechanical Engineering, Adana Science and Technology University, Adana, TURKEY
2Department of Mechanical Engineering, Adana Science and Technology University, Adana, TURKEY
J Ther Eng 2018; 1(4): 1702-1712
Abstract
In this study, thermal and thermohydraulic efficiencies of a solar air collector having a roughened absorber with rib grooved artificial roughness elements have been investigated and compared with the flat plate solar air collectors. The system has been theoretically investigated for different geometrical roughness parameters by help of energy balance equations between the elements of collector. Geometrical roughness parameters such as ratio of the relative roughness height (RRH), relative roughness pitch (RRP), and groove positions to pitch ( GP/PR ) are examined for Reynolds number range from 3000 to 21.000.
Keywords: Solar Energy; Artificial Roughness o f Solar Air Heater; Rib a nd Groove Type Roughness
