Augmentation on Heat Transfer and Friction Factor in Three Sides Solar Air Heaters Having an Arrangement of Multi-V and Transverse Wire Roughness on the Absorber Plate

Authors : Dhananjay Kumar, Laljee Prasad

Pages : 109-117

Doi:10.5541/ijot.796532

View : 11 | Download : 6

Publication Date : 2021-05-26

Article Type : Research

Abstract :This paper present the experimental inquiry on heat transfer and friction features enrichment adopting new-fangled of three side’s synthetically rugged rectangular duct solar air heaters (SAHs). The roughened rectangular SAH ducts has been an arrangement of multi-v and transverse wire (top wall multi-v and two side walls transverse) covered with glass on three sides. It has various appliances such as crop drying, seasoning of timber, space heating, industrial purpose, etc. The rectangular duct used has a width to height ratio, W/H, equal to 8, relative raggedness pitch, P/e, wide-ranging from 10 - 25, relative raggedness height, e/D, varied from 0.018 – 0.042 and flow Reynolds number, Re, occupied from 3500 – 12,000 for fixed values of relative raggedness width, W/w, of 6 and an angle of attack,
Keywords : artificial roughness, , airflow, , heat transmission, , pressure drop, , solar energy, , solar air heater.