EXPERIMENTAL HEAT TRANSFER ANALYSIS OF DIFFERENT METAL AND ELECTROPLATED METAL TUBES UNDER NATURAL CONVECTION

Mechanical Engineering

Heat transfer by natural convection occurs due to the movement of fluid induced by the density gradient in a heating or cooling process. Natural convection heat transfer study from heated vertical cylinders is studied experimentally and numerically. Vertical cylinders were performed with four test cylinders made of copper, aluminum, brass and stainless steel metal tubes. The electroplating is done for remaining three metal tubes expect copper cylinder. The electroplating method is required for coating on metals. After coating is completed the experiments were performed for different metal tubes and electroplated metal tubes for various heat inputs. Experiments were performed in experimental setup for different temperature and ambient conditions which were varies from different metals and copper coated metals according to the given heat input by heater from the main supply. Heat loss outside surrounding from the tube is improves by 12.71% for electroplated aluminum tube as compare to copper tube and average surface heat transfer coefficient is improved by 2.21% for electroplated aluminum tube as compare to copper tube.

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