Experimental investigation of natural convection heat transfer coefficient for roughed inclined plate

Natural Convection is the process of heat transfer from one fluid to another with temperature difference without external agency and heat transfer from electronic circuits, refrigerators, heat exchangers, fuel elements in nuclear reactors, cooling towers and home ventilation etc. through naturally. In this research investigated heat transfer coefficient on plain, semi roughed and roughed plate. The parameters varied during the experimentation are heat input ranges from 30.6 to 174.75 Watts and the angle of inclination for plate from (0 degrees, 15 degrees,30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees). It has been observed that the heat transfer coefficient is enhanced up to 6.63% from plain to semi roughed, 3.87% from semi rough to rough and 10.75% from plain to rough plate at maximum heat input. The heat transfer enhancement has been investigated experimentally and experimental results have been validated with CFD simulation (Ansys software). (c) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd International Conference on Materials, Manufacturing and Modelling.